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DR. HANWU LEI Biofuels, Bioproducts & Thermochemical Catalysis Lab

Publications

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Dr. Hanwu Lei’s research featured on the front cover of the volume 18 Issue 15 edition of Green Chemistry journal

The August 2016 issue of the journal of Green Chemistry features the research article from Dr. Lei’s group, “Catalytic co-pyrolysis of lignocellulosic biomass with polymers: a critical review.(Front cover based on a design by Drs. Xuesong Zhang and Hanwu Lei; Dr. Xuesong Zhang is the recent PhD graduate from Dr. Lei’s group).

Dr. Lei’s group is working on the addition of a hydrogen-rich co-reactant (e.g. waste plastics) in catalytic fast pyrolysis (CFP) which can significantly improve the yield of aromatics and lower the coke formation. Catalytic co-pyrolysis can also reduce the disposal of waste polymers (plastics and waste tires) in landfills, solve some environmental issues, and further increase energy security. Dr Lei and his group’s studies demonstrate the remarkable achievement of high jet fuel yield from catalytic co-pyrolysis.

Green Chemistry is a top journal (Impact Factor: 8.506) and the frontiers of the interdisciplinary science of alternative sustainable technologies and publishes cutting-edge research that attempts to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment.

front-cover-image_scan


Quick Links:
Recent Peer-reviewed Journal Papers   |   Refereed Journal Papers   |   Books & Chapters   |   Proceedings   |   Conference Papers & Presentations


Recent Peer-reviewed Journal Papers:

  • X. Zhang, H. Lei*, J. Wu, S. Chen. 2016. Catalytic co-pyrolysis of lignocellulosic biomass with polymers: a critical review. Green Chemistry. doi:10.1039/C6GC00911E.
  • X. Zhang, H. Lei*, L. Zhu, M. Qian, J. C. Chan, X. Zhu, Y. Liu, G. Yadavalli, D Yan, L. Wang, Q. Bu, Y. Wei, J. Wu, S. Chen.  2016. Development of a catalytically green route from diverse lignocellulosic biomasses to high-density cycloalkanes for jet fuels. Catalysis Science & Technology. doi:10.1039/C5CY01623A.
  • X. Zhang, H. Lei*, L. Zhu, M. Qian, X. Zhu J. Wu, S. Chen. 2016. Enhancement of jet fuel range alkanes from co-feeding of lignocellulosic biomass with plastics via tandem catalytic conversions. Applied Energy, 173, 418-430. doi: 10.1016/j.apenergy.2016.04.071.
  • X. Zhang, H. Lei*, L. Zhu, J. Wu, S. Chen.  2015. From lignocellulosic biomass to renewable cycloalkanes for jet fuels. Green Chemistry. 17: 4736-4747. doi:10.1039/C5GC01583A.
  • X. Zhang, H. Lei*, L. Wang, L. Zhu, Y. Wei, Y. Liu, G. Yadavalli, D. Yan.  2015. Renewable gasoline-range aromatics and hydrogen-enriched fuel gas from biomass via catalytic microwave-induced pyrolysis. Green Chemistry. 17: 4029-4036. doi: 10.1039/C5GC00516G.
  • B. Xie; Y Chen*, M. Yu, X. Shen, H. Lei, T. Xie, Y. Zhang, Y. Wu. 2015. Carboxyl-Assisted Synthesis of Nitrogen-Doped Graphene Sheets for Supercapacitor Applications. Nanoscale Research Letters, 10:332-341, doi: 10.1186/s11671-015-1031-z.
  • S. Ren, H. Lei*, L. Wang, Q. Bu, S. Chen, J. Wu. 2014. Hydrocarbons and hydrogen-rich syngas production by biomass catalytic pyrolysis and bio-oil upgrading over biochar catalysts. RSC Advances, 4 (21), 10731 – 10737. doi: 10.1039/c4ra00122b.
  • Y. Wei, H. Lei*, L. Wang, L. Zhu, X. Zhang, Y. Liu, S. Chen, B. Ahring. 2014. Liquid-liquid extraction of biomass pyrolysis bio-oil. Energy and Fuels, 28(2), 1207-1212. doi: 10.1021/ef402490s.
  • Q. Bu, H. Lei*, L. Wang, Y. Wei, L. Zhu, L. Zhu, X. Zhang, Y. Liu, G. Yadavalli and J. Tang. 2014.  Bio-based phenols and fuel production from catalytic microwave pyrolysis of lignin by activated carbons. Bioresource Technology, 162: 142-147. doi: 10.1016/j.biortech.2014.03.103.
  • L. Wang, H. Lei*, J. Lee, S. Chen, J. Tang, B. Ahring. 2013. Aromatic hydrocarbons from packed-bed catalysis coupled with microwave pyrolysis of Douglas fir sawdust pellets. RSC Advances, 34, 3, 14609 – 14615. doi:10.1039/C3RA23104F.
  • Z. Du, X. Ma, Y. Li, P. Chen, Y. Liu, X. Lin, H. Lei, R. Ruan. 2013. Production of aromatic hydrocarbons by catalytic pyrolysis of microalgae with zeolites: Catalyst screening in a pyroprobe. Bioresource Technology, 139, 397-401 doi: 10.1016/j.biortech.2013.04.053
  • Q. Bu, H. Lei*, L. Wang, Y. Liu, J. Liang, Y. Wei, L. Zhu, and J. Tang. 2013.  Renewable phenols production by catalytic microwave pyrolysis of Douglas fir sawdust pellets with activated carbon catalysts. Bioresource Technology, 142: 546-552. doi: 10.1016/j.biortech.2013.05.073.
  • S. Ren, H. Lei*, L. Wang, Q. Bu, S. Chen, J. Wu. 2013. Thermal behavior and kinetic study for woody biomass torrefaction and torrefied biomass pyrolysis by TGA. Biosystems Engineering, 116, 4, 420-426. doi: 10.1016/j.biosystemseng.2013.10.003.
  • S. Ren, H. Lei*, L. Wang, Q. Bu, S. Chen, J. Wu, J. Julson, and R. Ruan. 2013. The effects of torrefaction on compositions of bio-oil and syngas from biomass pyrolysis by microwave heating. Bioresource Technology, 135, 659-994. doi: 10.1016/j.biortech.2012.06.091.
  • I. Cybulska*, G. P. Brudecki, B. R. Hankerson, J. L. Julson, H. Lei. 2013. Catalyzed modified clean fractionation of switchgrass. Bioresource Technology, 127, 92-99. doi: 10.1016/j.biortech.2012.09.131. 03.08.12
  • S. Ren, H. Lei*, L. Wang, Q. Bu, Y. Wei, J. Liang, Y. Liu, J. Julson, S. Chen, J. Wu, and R. Ruan. 2012. Microwave torrefaction of Douglas fir sawdust pellet.Energy & Fuels, 26, 5936-5943. doi: 10.1021/ef300633c.
  • L. Wang, H. Lei*, S. Ren, Q. Bu, J. Liang, Y. Wei, Y. Liu, G. J. Lee, S. Chen, J. Tang, Q. Zhang, and R. Ruan. 2012. Aromatics and phenols from catalytic pyrolysis of Douglas fir pellets in microwave with ZSM-5 as a catalyst. Journal of Analytic and Applied Pyrolysis, 98, 194-200. doi: 10.1016/j.jaap.2012.08.002.
  • Q. Bu, H. Lei*, A. H. Zacher, L. Wang, S. Ren, J. Liang, Y. Wei, Y. Liu, J. Tang, Q. Zhang, and R. Ruan. 2012. A review of catalytic hydrodeoxygenation of lignin-derived phenols from biomass pyrolysis. Bioresource Technology, 124, 470-477. doi: 10.1016/j.biortech.2012.08.089. 07.10.12
  • Q. Bu, H. Lei*, S. Ren, L. Wang, Q. Zhang, J. Tang, and R. Ruan. 2012. Production of phenols and biofuels by catalytic microwave pyrolysis of lignocellulosic biomass. Bioresource Technology, 108: 274-279. doi: 10.1016/j.biortech.2011.12.125.
  • S. Ren, H. Lei*, L. Wang, Q. Bu, S. Chen, J. Wu, J. Julson, and R. Ruan. 2012. Biofuel production and kinetics analysis of microwave pyrolysis for Douglas fir sawdust pellet. Journal of Analytic and Applied Pyrolysis, 94: 163-169. doi: 10.1016/j.jaap.2011.12.004.
  • I. Cybulska*, G. Brudecki, K. Rosentrater, J. Julson, H. Lei. 2012. Comparative study of organosolv lignins extracted from prairie cordgrass, switchgrass and corn stover. Bioresource Technology, 118C: 30-36. doi: 10.1016/j.biortech.2012.05.073.
  • I. Cybulska*, G. Brudecki, K. Rosentrater, H. Lei, J. Julson. 2012. Catalyzed modified clean fractionation of prairie cordgrass integrated with hydrothermal post-treatment. Biomass and Bioenergy, 46, 389-401. doi: 10.1016/j.biombioe.2012.08.002.
  • I. Cybulska, H. Lei*, J. Julson, G. Brudecki. 2012. Optimization of Modified Clean Fractionation of Prairie Cord Grass. International Journal of Agricultural and Biological Engineering, 5(2): 42-51. doi: 10.3965/j.ijabe.20120502.00?
  • Q. Bu, H. Lei*, S. Ren, L. Wang, J. Holladay, Q. Zhang, J. Tang, and R. Ruan. 2011. Phenol and phenolics from lignocellulosic biomass by catalytic microwave pyrolysis. Bioresource Technology, 102: 7004-7007. doi:10.1016/j.biortech.2011.04.025


Quick Links:
Recent Peer-reviewed Journal Papers   |   Refereed Journal Papers   |   Books & Chapters   |   Proceedings   |   Conference Papers & Presentations


Refereed Journal Papers (80)

Peer Reviewed Journal Publications (* indicates corresponding author; * indicates corresponding author in the review process)

2017 Published Peer-Reviewed Journal Papers (7):

80. X. Zhang*, K. Rajagopalan, H. Lei, R. Ruan and B. K. Sharma. 2017. An overview of a novel concept in biomass pyrolysis: microwave irradiation. Sustainable Energy and Fuels. doi:10.1039/c7se00254h.

79. J. Liang, H. M. Morgan Jr., Y. Liu, A. Shia, H. Lei, H. Mao, Q. Bu*. 2017. Enhancement of bio-oil yield and selectivity and kinetic study of catalytic pyrolysis of rice straw over transition metal modified ZSM-5 catalyst. Journal of Analytical and Applied Pyrolysis, 128, 324-334. doi: 10.1016/j.jaap.2017.09.018.

78. L. Fan, Y. Zhang, S. Liu, N. Zhou, P. Chen, Y. Liu, Y Wang, P. Peng, Y. Cheng, M. Addy, H. Lei, R. Ruan*. 2017. Ex-situ catalytic upgrading of vapors from microwave-assisted pyrolysis of low-density polyethylene with MgO. Energy Conversion and Management, 149, 432–441. doi: 10.1016/j.enconman.2017.07.039.

77. X. Zhang, H. Lei*, L. Zhu, M. Qian, G. Yadavalli, J. Wu, S. Chen. 2017. From plastics to jet fuel range alkanes via combined catalytic conversions. Fuel.188, 28-38. doi:10.1016/j.fuel.2016.10.015.

76. G. Yadavalli, H. Lei*, Y. Wei, L. Zhu, X. Zhang, Y. Liu, D. Yan. 2017. Carbon dioxide capture using ammonium sulfate surface modified activated biomass carbon. Biomass and Bioenergy. doi:10.1016/j.biombioe.2017.01.015.

75. Y. Zhang, P. Chen, Sh. Liu; P. Peng; M. Min, Y. Cheng, E. Anderson; N. Zhou, L. Fan, C. Liu, G. Chen, Y. Liu, H. Lei, B. Li, R. Ruan*. 2017. Effects of feedstock characteristics on microwave-assisted pyrolysis-a review. Bioresource Technology.230:112-121. doi:10.1016/j.biortech.2017.01.046.

74. H. M. Morgan JR., Q. Bu*, J. Liang, H. Mao, A. Shi, H. Lei, R. Ruan. 2017. A review of catalytic microwave pyrolysis of lignocellulosic biomass for value-added bio-oil production. Bioresource Technology.230:112-121. doi:10.1016/j.biortech.2017.01.059.

2016 Published Peer-Reviewed Journal Papers (10):

73. X. Zhang, H. Lei*, J. Wu, S. Chen. 2016. Catalytic co-pyrolysis of lignocellulosic biomass with polymers: a critical review. Green Chemistry, 18, 4145-4169 doi:10.1039/C6GC00911E.

72. Q. Bu, H. Lei*, M. Qian, G. Yadavalli. 2016. Phenols production and kinetics study of catalytic pyrolysis of lignin: comparison of microwave and conventional heating. RSC Advances, 6, 100700 – 100707. doi: 10.1039/C6RA22967K.

71. X. Zhang, H. Lei*, L. Zhu, M. Qian, G. Yadavalli, J. Wu, S. Chen. 2016. From plastics to jet fuel range alkanes via combined catalytic conversions. Fuel, 188, 28-38. 10.1016/j.fuel.2016.10.015.

70. X. Zhang, H. Lei*, L. Zhu, X. Zhu, M. Qian, G. Yadavalli, J. Wu, S. Chen. 2016. Thermal behavior and kinetic study for catalytic co-pyrolysis of biomass with plastics. Bioresource Technology, doi: 10.1016/j.biortech.2016.08.068.

69. X. Zhang, H. Lei*, L. Zhu, M. Qian, X. Zhu J. Wu, S. Chen. 2016. Enhancement of jet fuel range alkanes from co-feeding of lignocellulosic biomass with plastics via tandem catalytic conversions. Applied Energy, 173, 418-430. doi: 10.1016/j.apenergy.2016.04.071.

68. X. Zhang, H. Lei*, L. Zhu, M. Qian, J. C. Chan, X. Zhu, Y. Liu, G. Yadavalli, D. Yan, L. Wang, Q. Bu, Y. Wei, J. Wu, S. Chen.  2016. Development of a catalytically green route from diverse lignocellulosic biomasses to renewable cycloalkanes for jet fuels.Catalysis Science & Technology. doi: 10.1039/C5CY01623A.

67. X. Zhang, H. Lei*, L. Zhu, Y. Liu, G. Yadavalli, D Yan, X. Zhu, J. Chin, M. Qian. J. Wu, S. Chen 2016. Optimizing carbon efficiency of jet fuel range alkanes from cellulose co-fed with polyethylene via catalytically combined processes. Bioresource Technology. doi: 10.1016/j.biortech.2016.04.086.

66. H. Ma, M. M. Addy, E. Anderson, W. Liu, Y. Liu, Y. Nie, P. Chen, B. Cheng, H. Lei, R. Ruan*. 2016. A novel process for low-sulfur biodiesel production from scum waste. Bioresource Technology, 214, 826-835. doi:10.1016/j.biortech.2016.05.029.

65. Y. Wei, H. Lei*, L. Zhu, X. Zhang, Y. Liu, G. Yadavalli, X. Zhu, M. Qian, D. Yan.  2016. Hydrocarbon produced from upgrading rich phenolic compound bio-oil with low catalyst coking. Fuel, 178: 77-84. doi:10.1016/j.fuel.2016.03.039.

64. X. Zhang, H. Lei*. 2016. Synthesis of high energy-density jet fuel from plastics via catalytically integral processes. RSC advances, 6: 6154-6163. doi: 10.1039/c5ra25327f.

2015 Published Peer-Reviewed Journal Papers (10):

63. X. Zhang, H. Lei*, L. Zhu, J. Wu, S. Chen. 2015. From lignocellulosic biomass to renewable cycloalkanes for jet fuels. Green Chemistry. 17: 4736-4747. doi:10.1039/C5GC01583A.

62. X. Zhang, H. Lei*, L. Wang, L. Zhu, Y. Wei, Y. Liu, G. Yadavalli, D. Yan. 2015. Renewable gasoline-range aromatics and hydrogen-enriched fuel gas from biomass via catalytic microwave-induced pyrolysis. Green Chemistry. 17: 4029-4036. doi:10.1039/C5GC00516G.

61. K. Li, Q. Gao*, G. Yadavalli, X. Shen, H. Lei, B. Han, K. Xia, and C. Zhou. 2015. Selective adsorption of Gd3+ on a magnetically retrievable imprinted chitosan/carbon nanotube composite with high capacity. ACS Applied Materials & Interfaces. 7(38), 21047-21055. doi: 10.1021/acsami.5b07560.

60. B. Xie; Y Chen*, M. Yu, X. Shen, H. Lei, T. Xie, Y. Zhang, Y. Wu. 2015. Carboxyl-Assisted Synthesis of Nitrogen-Doped Graphene Sheets for Supercapacitor Applications. Nanoscale Research Letters, 10:332-341, doi: 10.1186/s11671-015-1031-z.

59. X. Zhang, H. Lei*, L. Wang, L. Zhu, Y. Wei, Y. Liu, G. Yadavalli, D Yan, J. Wu, S. Chen. 2015. Insight in the integrated catalytic processes of intact biomass for production of renewable jet fuel range paraffins and aromatics. Fuel, 160:375-385. doi: 10.1016/j.fuel.2015.08.006.

58. X. Shen, Y. Wang*, B. Ahring*, H. Lei, Q. Gao, H. Liu. 2015. Isomerization of hexoses from enzymatic hydrolysate of poplar sawdust using low leaching K2MgSiO4 catalysts for one-pot synthesis of HMF. RSC Advances, 5, 96990-96996. doi: 10.1039/c5ra17132f.

57. L. Zhu, H. Lei*, L. Wang, G. Yadavalli, X. Zhang, Y. Wei, Y. Liu, S. Chen, and B. Ahring. 2015. Biochar of Corn Stover: Microwave-assisted Pyrolysis Condition Induced Changes in Surface Functional Groups and Characteristics. Journal of Analytical and Applied Pyrolysis. doi:10.1016/j.jaap.2015.07.012.

56. Y. Wei, H. Lei**, L. Zhu, X. Zhang, G. Yadavalli, Y. Liu, D. Yan. 2015. Oxygen-containing fuels from high acid water phase pyrolysis bio-oils by ZSM-5 catalysis: kinetic and mechanism studies. Energies, 8(6), 5898-5915; doi:10.3390/en8065898.

55. Q. Bu, H. Lei**, L. Wang, G. Yadavalli, Y. Wei, X. Zhang, L. Zhu, Y. Liu. 2015. Biofuel production from catalytic microwave pyrolysis of Douglas fir pellets over ferrum-modified carbon catalyst. Journal of Analytical and Applied Pyrolysis, 112: 74-79. doi: 10.1016/j.jaap.2015.02.019.

54. X. Zhang, H. Lei**, G. Yadavalli, L. Zhu, Y. Wei, Y. Liu. 2015. Gasoline-range Hydrocarbons produced from Microwave-induced Pyrolysis of Low-Density Polyethylene over ZSM-5. Fuel, 144: 33-42. doi: 10.1016/j.fuel.2014.12.013.

2014 Published Peer-Reviewed Journal Papers (7):

53. L. Wang, H. Lei**, Q. Bu, L. Zhu, Y. Wei,  X. Zhang, Y. Liu,  G. Yadavalli, J. Lee, S. Chen, and J. Tang. 2014.  Aromatic hydrocarbons production from ex-situ catalysis of pyrolysis vapor over Zinc modified ZSM-5 in a packed-bed catalysis coupled with microwave pyrolysis reactor. Fuel, 129C, 78-85. doi: 10.1016/j.fuel.2014.03.052.

52. Q. Bu, H. Lei**, L. Wang, Y. Wei, L. Zhu, X. Zhang, Y. Liu, G. Yadavalli and J. Tang. 2014.  Bio-based phenols and fuel production from catalytic microwave pyrolysis of lignin by activated carbons. Bioresource Technology, 162C, 142-147. doi: 10.1016/j.biortech.2014.03.103.

51. S. Ren, H. Lei**, L. Wang, G. Yadavalli, Y. Liu, J. Julson. 2014. The integrated process of microwave torrefaction and pyrolysis of corn stover for biofuel production. Journal of Analytic and Applied Pyrolysis. doi: 10.1016/j.jaap.2014.04.008.

50. Invited Peer-Reviewed Journal Paper: Y. Wei, H. Lei**, Y. Liu, L. Wang, L. Zhu, X. Zhang, G. Yadavalli, B. Ahring, S. Chen. 2014. Renewable hydrogen produced from different renewable feedstocks by aqueous-phase reforming process. Journal of Sustainable Bioenergy Systems, 4(2): 113-127. doi: 10.4236/jsbs.2014.42011.

49. S. Ren, H. Lei**, L. Wang, Q. Bu, S. Chen, J. Wu. 2014. Hydrocarbons and hydrogen-rich syngas production by biomass catalytic pyrolysis and bio-oil upgrading over biochar catalysts. RSC Advances, 4 (21), 10731 – 10737. doi: 10.1039/c4ra00122b.

48. Y. Wei, H. Lei**, L. Wang, L. Zhu, X. Zhang, Y. Liu, S. Chen, B. Ahring. 2014. Liquid-liquid extraction of biomass pyrolysis bio-oil. Energy and Fuels, 28(2), 1207-1212. doi: 10.1021/ef402490s.

47. Q. Wang, H. Lei, L. JiangQ. Wen, W. Bai. Y. Zhong*. 2014. Optimization and evaluation of microencapsulation of star anise oleoresin. Journal of Food Processing and Preservation, 38(5):2129-2136. doi:10.1111/jfpp.12193.

2013 Published Peer-Reviewed Journal Papers (11):

46. Invited Peer-Reviewed Journal Paper: H. Lei**, I. Cybulska, J. Julson. Hydrothermal pr etreatment of lignocellulosic biomass and kinetics. Journal of Sustainable Bioenergy Systems, 3(4): 250-259. doi: 10.4236/jsbs.2013.34034.

45. S. Ren, H. Lei**, L. Wang, Q. Bu, S. Chen, J. Wu. 2013. Thermal behavior and kinetic study for woody biomass torrefaction and torrefied biomass pyrolysis by TGA. Biosystems Engineering, 116, 4, 420-426. doi: 10.1016/j.biosystemseng. 2013.10.003.

44. L. Wang, H. Lei**, J. Lee, S. Chen, J. Tang, B. Ahring. 2013.  Aromatic hydrocarbons from packed-bed catalysis coupled with microwave pyrolysis of Douglas fir sawdust pellets. RSC Advances, 34, 3, 14609 – 14615. doi: 10.1039/C3RA23104F.

43. Q. Bu, H. Lei**, L. Wang, Y. Liu, J. Liang, Y. Wei, L. Zhu, and J. Tang. 2013.  Renewable phenols production by catalytic microwave pyrolysis of Douglas fir sawdust pellets with activated carbon catalysts. Bioresource Technology, 142: 546-552. doi: 10.1016/j.biortech.2013.05.073.

42. S. Ren, H. Lei**, L. Wang, Q. Bu, S. Chen, J. Wu, J. Julson, and R. Ruan. 2013. The effects of torrefaction on compositions of bio-oil and syngas from biomass pyrolysis by microwave heating. Bioresource Technology, 135, 659-994. doi: 10.1016/j.biortech.2012.06.091.

41. B. Hu, W. Zhou, M. Min, Z. Du, P. Chen, X. Ma, Y. Liu, H. Lei, J. Shi, R.  Ruan*. 2013. Development of an effective acidogenically digested swine manure-based algal system for improved wastewater treatment and biofuel and feed production.Applied Energy, 107, 255-263. doi: 10.1016/j.apenergy.2013.02.033.

40. R. Zhou, H. Lei**, J. Julson. 2013. Reaction temperature and time and particle size on switchgrass microwave pyrolysis and reaction kinetics. Int. J. Agr. Biol. Eng., 6(1): 53-61. dio: 10.3965/j.ijabe.20130601.005.

39. Z. Du, X. Ma, Y. Li, P. Chen, Y. Liu, X. Lin, H. Lei, R. Ruan*. 2013. Production of aromatic hydrocarbons by catalytic pyrolysis of microalgae with zeolites: Catalyst screening in a pyroprobe. Bioresource Technology, 139, 397-401 doi: 10.1016/j.biortech.2013.04.053.

38. R. Zhou, H. Lei**, J. Julson. 2013. The Effects of pyrolytic conditions on microwave pyrolysis of prairie cordgrass and kinetics. J. Analytic and Applied Pyrolysis, 101, 172-176. doi: 10.1016/j.jaap.2013.01.013.

37. Z. Du, B. Hu, X. Ma, Y. Cheng, Y. Liu, X. Lin, Y. Wan, H. Lei, P. Chen, and R. Ruan*. 2013. Catalytic pyrolysis of microalgae and their three major components: carbohydrates, proteins, and lipids. Bioresource Technology, 130: 777–782. doi: 10.1016/j.biortech.2012.12.115.

36. I. Cybulska*, G. P. Brudecki, B. R. Hankerson, J. L. Julson, H. Lei. 2013. Catalyzed modified clean fractionation of switchgrass. Bioresource Technology, 127, 92-99. doi: 10.1016/j.biortech.2012.09.131.

2012 Published Peer-Reviewed Journal Papers (11):

35. L. Wang, H. Lei**, S. Ren, Q. Bu, J. Liang, Y. Wei, Y. Liu, G. J. Lee, S. Chen, J. Tang, Q. Zhang, and R. Ruan. 2012. Aromatics and phenols from catalytic pyrolysis of Douglas fir pellets in microwave with ZSM-5 as a catalyst. J. Analytic and Applied Pyrolysis, 98, 194–200. doi: 10.1016/j.jaap.2012.08.002.

34. S. Ren, H. Lei**, L. Wang, Q. Bu, Y. Wei, J. Liang, Y. Liu, J. Julson, S. Chen, J. Wu, and R. Ruan. 2012. Microwave torrefaction of Douglas fir sawdust pellet. Energy & Fuels, 26, 5936−5943. doi: 10.1021/ef300633c.

33. I. Cybulska*, G. Brudecki, K. Rosentrater, H. Lei, J. Julson. 2012. Catalyzed modified clean fractionation of prairie cordgrass integrated with hydrothermal post-treatment. Biomass and Bioenergy, 46, 389-401. doi: 10.1016/j.biombioe. 2012.08.002.

32. Q. Bu, H. Lei**, A. H. Zacher, L. Wang, S. Ren, J. Liang, Y. Wei, Y. Liu, J. Tang, Q. Zhang, and R. Ruan. 2012. A review of catalytic hydrodeoxygenation of lignin-derived phenols from biomass pyrolysis. Bioresource Technology, 124, 470–477. doi: 10.1016/j.biortech.2012.08.089.

31. I. Cybulska*, G. Brudecki, K. Rosentrater, J. Julson, H. Lei. 2012. Comparative study of organosolv lignins extracted from prairie cordgrass, switchgrass and corn stover. Bioresource Technology, 118C: 30-36. doi: 10.1016/j.biortech. 2012.05.073.

30. I. Cybulska, H. Lei**, J. Julson, G. Brudecki. 2012. Optimization of Modified Clean Fractionation of Prairie Cord Grass. Int. J. Agr. Biol. Eng., 5(2): 42-51. doi: 10.3965/j.ijabe.20120502.00?

29. B. Hu, M. Min, W. Zhou, Y. Li, M. Mohr, Y. Cheng, H. Lei, Y. Liu, X. Lin, P. Chen, R. Ruan*. 2012. Influence of exogenous CO2 on biomass and lipid accumulation of microalgae Auxenochlorella protothecoides cultivated in concentrated municipal wastewater, Appl. Biochem. Biotechnol., 166(7):1661-1673. doi: 10.1007/s12010-012-9566-2.

28. I. Cybulska, G. Brudecki, H. Lei**, J. Julson. 2012. Optimization of combined clean fractionation and hydrothermal post-treatment of prairie cord grass. Energy & Fuels, 26(4): 2303−2309. doi: 10.1021/ef300249m.

27. Q. Wang, Z. Ou, H. Lei, X Zeng*, Y. Ying, W. Bai. 2012. Antimicrobial activities of a new formula of spice water extracts against foodborne bacteria. J. food processing and preservation, 36(4): 374-381. doi: 10.1111/j.1745-4549.2012.00691.x.

26. S. Ren, H. Lei**, L. Wang, Q. Bu, S. Chen, J. Wu, J. Julson, and R. Ruan. 2012. Biofuel production and kinetics analysis of microwave pyrolysis for Douglas fir sawdust pellet. J. Analytic and Applied Pyrolysis, 94: 163-169. doi: 10.1016/j.jaap.2011.12.004.

25. Q. Bu, H. Lei**, S. Ren, L. Wang, Q. Zhang, J. Tang, and R. Ruan. 2012. Production of phenols and biofuels by catalytic microwave pyrolysis of lignocellulosic biomass. Bioresource Technology, 108:274-279. doi: 10.1016/j.biortech.2011.12.125.

2011 Published Peer-Reviewed Journal Papers (5):

24. Q. Bu, H. Lei**, S. Ren, L. Wang, J. Holladay, Q. Zhang, J. Tang, and R. Ruan. 2011. Phenol and phenolics from lignocellulosic biomass by catalytic microwave pyrolysis. Bioresource Technology, 102: 7004–7007.

23. H. Lei**, S. Ren, L. Wang, Q. Bu, J. Julson, J. Holladay, and R. Ruan. 2011. Microwave pyrolysis of distillers dried grain with solubles (DDGS) for biofuel production. Bioresource Technology, 102 (10) 6208–6213.

22. Y. Gao, W. Chen, H. Lei*, Y. Liu, X. Lin, R. Ruan*. 2011. Optimization of Transesterification Conditions for the Production of Fatty Acid Methyl Ester (FAME) from Chinese Tallow Kernel Oil with a Nano Magnetic Catalyst. Trans. ASABE., 54(3): 1169-1174.

21. X. Lin, J. Zhang, H. Lei*, Z. Jin, P. Chen, R. Roger*. 2011. Effects of different resistant starches on firmness and stickiness of dough by NMR evaluation. Int. Agr. Eng. J., 19(4): 1-9.

20. W. Liu, C. Liu**, J. Liu, S. Yang, H. Zheng, H. Lei, R. Ruan, T. Li, Z. Tu, X. Song. 2011. Medium-chain fatty acids nanoliposomes for easy energy supply. http://www.sciencedirect.com/scidirimg/clear.gifNutrition,27: 700–706.

2010 Published Peer-Reviewed Journal Papers (6):

19. I. Cybulska, H. Lei**, J. Julson. 2010. Hydrothermal pretreatment and enzymatic hydrolysis of prairie cord grass. Energy & Fuels, 24(1): 718–727.

18. C. Yang, B. Zhang, J. Moen, K. Hennessy, Y. Liu, X. Lin, Y. Wan, H. Lei*, P. Chen, and R. Ruan*. 2010. Fractionation and characterization of bio-oil from microwave-assisted pyrolysis of corn stover. Int. J. Agr. Biol. Eng., 3(3): 54-61.

17. B. Zhang, C. Yang, J. Moen, Z. Le, K. Hennessy, Y. Wan, Y. Liu, H. Lei, P. Chen and R. Ruan**. 2010. Catalytic conversion of microwave-assisted pyrolysis vapors.Energy Sources, Part A: Recovery, Utilization, and Environmental Effects,32(18):1756-1762.

16. X. Lin*, L. Zhang, H. Lei*, H. Zhang, Y. Cheng, R. Zhu, R. Ruan. 2010. Effect of drying technologies on quality of green tea, Int. Agr. Eng. J., 19(3): 30-37.

15. H. Ding, Y. Gao, H. Lei*, L. Luo , H. Chao, and R. Run*. 2010. The in vitro antioxidant effects of flavonoids of sweet potato vines. Int. J. Food Properties.,13(2):360-368.

14. L. Gao, Y. Liu, H. Lei*, H. Peng, R. Ruan*. 2010. Preparation of semirigid polyurethane foam (PUF) with liquefied bamboo residues. J. Applied Polymer Sci., 116, 1694–1699.

2009 Published Peer-Reviewed Journal Papers (6):

13. J. Moen, C. Yang, B. Zhang, H. Lei*, K. Hennessy, Y. Wan, Z. Le, Y. Liu, P. Chen, R. Ruan*. 2009.  Catalytic microwave assisted pyrolysis of aspen. Int. J. Agric. & Biol. Eng., 2009; 2(4): 70-75.

12. H. Lei**, S. Ren, and J. Julson. 2009. The effects of reaction temperature and time and particle size of corn stover on microwave pyrolysis. Energy and Fuels,23, 3254–3261.

11. Y. Wang, J. Wu, Y. Wan, H. Lei*, F. Yu, P. Chen, X. Lin, and R. Ruan*. 2009. Liquefaction of corn stover using industrial biodiesel glycerol. Int. J. Agric. & Biol. Eng., 2(2): 32-40.

10. Wan, Y., X. Lin, Y. Liu, C. Yang, B. Zhang, P Chen, H. Lei*, and R. Ruan*. 2009. Microwave assisted pyrolysis of corn stover pellets with catalysts for bio-oil production. Transaction of CSAE, 25(4):190-195.

9. J. Wu, Y. Wang, Y. Wan, H. Lei*, F. Yu, Y. Liu, P. Chen, L. Yang, R. Ruan*. 2009. Processing and properties of rigid polyurethane foams based on bio-oils from microwave-assisted pyrolysis of corn stover. Int. J. Agric. & Biol. Eng., 2(1): 40-50.

8. Y. Gao, W. Chen, H. Lei*, X. Lin, R. Ruan*, C. Chen. 2009. Optimization of esterification conditions for the production of biodiesel from Chinese tallow kernel oil with surfactant-coated lipase using surface response methodology. Biomass and Bioenergy, 33(2): 277-282.

2008 Published Peer-Reviewed Journal Papers (3):

7. Y. Liu, Y. Wan, H. Lei*, R. Ruan*, C. Liu, X. Lin, M. Xie, H. Peng, D. Zheng. 2008. Starch based polyester type water resistant wood adhesive. Transactions of the CSAE24(9): 309-312.

6. H. Lei*, R. Ruan*, G. Fulcher, and B. van Lengerich. 2008. Color development in an extrusion cooked model system. Int. J. Agric. & Biol. Eng., 1(2): 55-63.

5. H. Lei*, G. Fulcher, R. Ruan*, and B. van Lengerich. 2008. Modeling mean residence time in a co-rotating twin screw extruder. Cereal Chemistry, 85(2):230-237.

2007 Published Peer-Reviewed Journal Papers (1):

4. H. Lei*, G. Fulcher, R. Ruan*, and B. van Lengerich. 2007. Assessment of color development due to twin-screw extrusion of rice-glucose-lysine blend using image analysis. LWT Journal of Food Sci. Tech., 40: 1224-1231.

2006 Published Peer-Reviewed Journal Papers (1):

3. H. Lei*, G. Fulcher, R. Ruan*, and B. van Lengerich. 2006. SME-Arrhenius model for WSI of rice flour in a twin screw extruder. Cereal Chemistry, 83(5): 574-581.

2005 Published Peer-Reviewed Journal Papers (1):

2. H. Lei*, G. Fulcher, R. Ruan*, and B. van Lengerich. 2005. Empirical modeling of die pressure, shaft torque, SME, and product temperature of rice flour in a co-rotating twin-screw extruder.  Cereal Chemistry, 82(5): 582-587.

2004 Published Peer-Reviewed Journal Papers (1):

1. R. Ruan*, H. Lei*, P. Chen, S. Deng, X. Lin, Y. Li, W. F. Wilcke, and G. Fulcher. 2004. Ozone-aided corn steeping process. Cereal Chemistry, 81(2):182-187.


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Books & Chapters (5)

5. X. Zhang, H. Lei*, R. Ruan. 2017. Microwave-assisted pyrolysis of lignocellulosic biomass. In Encyclopedia of Agricultural, Food, and Biological Engineering . Eds. D. R. Heldman and C. I. Moraru. CRC Press. ISBN 9781439811115.

4. Q. Bu, H. M. Morgan JR., J. Liang, H. Lei*, R. Ruan. 2016. Catalytic microwave pyrolysis of lignocellulosic biomass. In Advances in Bioenergy . Eds. Y. Li, X. Ge. pp. 69–123. Elsevier. ISBN: 9780128095225.

3. L. Wang, H. Lei*, R. Ruan. 2015. Techno-economic analysis of microwave assisted pyrolysis for production of biofuels.In Production of Biofuels and Chemicals with Microwave, Springer Book Series – Biofuels and Biorefineries”. Ed. Z. Fang, R. L. Smith, Jr., X. Qi. Springer. ISBN 978-94-017-9612-5, vol. 3, pp251-263.

2. I. Cybulska, G. Brudecki, H. Lei**. 2014. Organosolv delignification of lignocellulosic materials, In Driving the Future: Advances in Cellulosic Ethanol and Advanced Drop-In Biofuels.Ed. B. Simmons. Future Science. Accepted.

1. I. Cybulska, G. Brudecki, H. Lei**.  2013. Hydrothermal pretreatment of lignocellulosic biomass. In Green Biomass Pretreatment and Processing Methods for Bioenergy Production. Ed. T. Gu. Springer. ISBN: 978-94-007-6052-3.


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Peer Reviewed Proceedings: (1)

1. H. Lei**, S. Ren, J. Julson, L. Wang, Q. Bu, and R. Ruan. 2011. Microwave torrefaction of corn stover and tech-economic analysis.ASME 2011 International Manufacturing Science and Engineering Conference, MSEC 2011. ISBN: 978-0-7918-4430-4, 1: 685-692.

Non Peer Reviewed Proceedings: (19)
2015 Proceedings (2):

19. L. Zhu, H. Lei*, X. Zhang, G. Yadavalli Y. Wei, Y. Liu. 2015. Preparation and characterization of biochar and activated carbon based solid acid catalysts for catalytic microwave pyrolysis. 2015 ASABE Annual International Meeting, New Orleans, Louisiana, July 26 – 29, 2015

18. X. Zhang, H. Lei*, L. Zhu, G. Yadavalli, Y. Wei, Y. Liu, D. Yan. 2015. Renewable jet fuel range alkanes from integrated catalytic processes of Douglas fir sawdust. 2015 ASABE Annual International Meeting, New Orleans, Louisiana, July 26 – 29, 2015

2014 Proceedings (3):

17. Y. Wei, H. Lei*, L. Wang, L. Zhu, X. Zhang, Y. Liu. Advanced upgrading of pyrolysis bio-oil via liquid-liquid extraction and esterification by zeolite catalysis. 2014 ASABE International Meeting, Montreal, Quebec Canada July 13 – July 16, 2014, 1: 579-600. doi: 10.13031/aim.20141893057

16. L. Zhu, H. Lei*, L. Wang, X. Zhang, Y. Wei, Y Liu, G. Yadavalli. Characterization of surface functional groups in corn stover biochar derived from microwave-assisted pyrolysis. 2014 ASABE International Meeting, Montreal, Quebec Canada July 13 – July 16, 2014, 1:755-767. doi: 10.13031/aim.20141893447

15. X. Zhang, H. Lei*, L. Wang, Y. Wei, L. Zhu, Y. Liu, G. Yadavalli. Aromatic Hydrocarbons from Microwave-induced Pyrolysis of Cellulose over ZSM-5. 2014 ASABE International Meeting, Montreal, Quebec Canada July 13 – July 16, 2014, 2:1054-1067 doi: 10.13031/aim.20141894632

2013 Proceedings (8):

14. L. Wang, H. Lei*, Q. Bu, L. Zhu.  Aromatic hydrocarbons production from catalysis of douglas fir sawdust pellets pyrolysis vapor over zeolite catalyst. 2013 AIChE Annual Meeting, San Francisco, California, November 3 – 8, 2013. http://www3.aiche.org/proceedings/content/Annual-2013/extended-abstracts/P320497.pdf

13. L. Zhu, H. Lei*, L. Wang. Catalytic Microwave Pyrolysis of Douglas Fir Pellets With Carbon Catalysts Derived From Corn Stover. 2013 AIChE Annual Meeting, San Francisco, California, November 3 – 8, 2013. http://www3.aiche.org/proceedings/content/Annual-2013/extended-abstracts/P320456.pdf

12. Y. Wei, H. Lei*. Advanced Upgrading of Pyrolysis Oil Via Liquid-Liquid Extraction. 2013 AIChE Annual Meeting, San Francisco, California, November 3 – 8, 2013. http://www3.aiche.org/proceedings/content/Annual-2013/extended-abstracts/P316352.pdf

11. Q. Bu, H. Lei*, L. Wang, and J. Tang. Biofuel production and kinetics study of catalytic microwave pyrolysis of douglas fir pellet over activated carbon supported metal catalyst. 2013 AIChE Annual Meeting, San Francisco, California, November 3 – 8, 2013. http://www3.aiche.org/proceedings/content/Annual-2013/extended-abstracts/P307886.pdf

10. L. Wang, H. Lei*, Q. Bu, L. Zhu, Y. Liu, J. Lee, S. Chen, and J. Tang. 2013. Catalytic upgrading of Douglas fir sawdust pellet vapors over Zn/ZSM-5 catalysts in a packed-bed catalysis reactor. American Society of Agricultural and Biological Engineers (ASABE) 2013 Annual International Meeting, 2013(3): 1869-1888. doi: http://dx.doi.org/10.13031/aim.20131594800

9. Q. Bu, H. Lei*, L. Wang, and J. Tang. 2013. Renewable phenols and fuel production from catalytic pyrolysis of lignin using microwave irradiation heating. American Society of Agricultural and Biological Engineers (ASABE) 2013 Annual International Meeting, 2013 (2): 1707-1740. doi: http://dx.doi.org/10.13031/aim.20131594593

8. L. Zhu, H. Lei*, L. Wang, Q. Bu, Y. Wei, Y. Liu, and J. Liang. 2013. Carbon catalyst from corn stover and its application to catalytic microwave pyrolysis. American Society of Agricultural and Biological Engineers (ASABE) 2013 Annual International Meeting, 2013(3): 1854-1860. doi: http://dx.doi.org/10.13031/aim.20131594788

7. Y. Wei and H. Lei*. 2013. Advanced upgrading of pyrolysis oil via liquid-liquid extraction. American Society of Agricultural and Biological Engineers (ASABE) 2013 Annual International Meeting, 2013(2): 1701-1706. doi: http://dx.doi.org/10.13031/aim.20131594590

2012 Proceedings (1):

6. Q. Bu, H. Lei*, S. Ren, L. Wang, Y. Liu, J. Liang, Y. Wei, Q. Zhang, J. Tang, and R. Ruan. 2012. Phenols and fuels from catalytic microwave pyrolysis of lignocellulosic biomass. American Society of Agricultural and Biological Engineers (ASABE) 2012 Annual International Meeting, 2012(2): 1147-1162. doi: 10.13031/2013.41768

2011 Proceedings (3):

5. S. Ren, H. Lei*, J. Julson, L. Wang, Q. Bu, and R. Ruan. 2011. Microwave torrefaction of corn stover. American Society of Agricultural and Biological Engineers (ASABE) 2011 Annual International Meeting, 2011(6): 4579-4591. doi: 10.13031/2013.37301

4. L. Wang, H. Lei*, S. Ren, Q. Bu, J. Tang, Q. Zhang, and R. Ruan. 2011. Microwave assisted pyrolysis of Douglas fir pellets over ZSM-5 zeolite catalysts. American Society of Agricultural and Biological Engineers (ASABE) 2011 Annual International Meeting, 2011(6): 5241-5252. doi: 10.13031/2013.37342

3. S. Ren, H. Lei*, L. Wang, Q. Bu, S. Chen, J. Wu, and R. Ruan. 2011. Microwave pyrolysis of Douglas fir sawdust pellet. American Society of Agricultural and Biological Engineers (ASABE) 2011 Annual International Meeting, 2011(2): 1334-1348. doi: 10.13031/2013.37300

2010 Proceedings (2):

2. I. Cybulska, H. Lei*, and J. Julson. 2010. Hydrothermal pretreatment and enzymatic hydrolysis of prairie cord grass. American Society of Agricultural and Biological Engineers (ASABE) 2011 Annual International Meeting, 2011(3): 2312-2334. doi: 10.13031/2013.29737

1. I. Cybulska, H. Lei*, and J. Julson. 2010. Integrated process of clean fractionation and hydrothermal treatment for prairie cord grass. American Society of Agricultural and Biological Engineers (ASABE) 2011 Annual International Meeting, 2011(3): 2349-2376. doi: 10.13031/2013.32003


Quick Links:
Recent Peer-reviewed Journal Papers   |   Refereed Journal Papers   |   Books & Chapters   |   Proceedings   |   Conference Papers & Presentations


Conference Papers and Presentations (91)

2017 International Conference Papers and Presentations (1):

68. L. Zhu, H. Lei*, X. Zhang, G. Yadavalli, M. Qian, Z. Yang, K. Qian, Y. Zhang. 2016. Development of microwave pyrolysis biochar as carbon catalysts for high value chemicals and hydrocarbons. 2017 International Biomass Conference & Expo, Minneapolis, Minnesota, April 10-12, 2017

2016 International Conference Papers and Presentations (4):

67. M. Qian, X. Zhang, H. Lei*, L. Zhu, J. C. Chan, X. Zhu, Y. Liu, G. Yadavalli, D. Yan. 2016. Catalytic separation and depolymerization of lignin for effective production of aromatic hydrocarbons. 2016 ASABE Annual International Meeting, Orlando, Florida, July 17 – 20, 2016

66. L. Zhu, H. Lei*, X. Zhang, Y. Liu, G. Yadavalli, D Yan, M. Qian, X. Zhu, J. C. Chan. 2016. Hydrocarbon Fuels Produced by Microwave-assisted Pyrolysis of Low Density Polyethylene (LDPE) over Carbon Catalysts. 2016 ASABE Annual International Meeting, Orlando, Florida, July 17 – 20, 2016

65. X. Zhu, G. Yadavalli, H. Lei*, X. Zhang, M. Qian, J. C. Chan, L. Zhu, Y. Liu, , D Yan. Protein based solid electrolyte from abundant Canola meal protein. 2016 ASABE Annual International Meeting, Orlando, Florida, July 17 – 20, 2016

64. H. Lei*. 2016. Aromatics and cycloalkanes/naphthenes for jet fuels from lignocellulosic biomass. 2016 International Symposium on Energy Economics and Management, Beijing, July 5-10, 2016

2015 International Conference Papers and Presentations (2):

63. X. Zhang, H. Lei*, L. Zhu, G. Yadavalli, Y. Wei, Y. Liu, D. Yan. 2015. Renewable jet fuel range alkanes from integrated catalytic processes of Douglas fir sawdust. 2015 ASABE Annual International Meeting, New Orleans, Louisiana, July 26 – 29, 2015

62. L. Zhu, H. Lei*, X. Zhang, G. Yadavalli Y. Wei, Y. Liu. 2015. Preparation and characterization of biochar and activated carbon based solid acid catalysts for catalytic microwave pyrolysis. 2015 ASABE Annual International Meeting, New Orleans, Louisiana, July 26 – 29, 2015

2014 International Conference Papers and Presentations (4):

61. Y. Wei, H. Lei*, L. Wang, L. Zhu, X. Zhang, Y. Liu. Advanced upgrading of pyrolysis bio-oil via liquid-liquid extraction and esterification by zeolite catalysis. 2014 ASABE International Meeting, Montreal, Quebec Canada July 13 – July 16, 2014

60. L. Zhu, H. Lei*, L. Wang, X. Zhang, Y. Wei, Y Liu, G. Yadavalli. Characterization of surface functional groups in corn stover biochar derived from microwave-assisted pyrolysis2014 ASABE International Meeting, Montreal, Quebec Canada July 13 – July 16, 2014

59. X. Zhang, H. Lei*, L. Wang, Y. Wei, L. Zhu, Y. Liu, G. Yadavalli. Upgraded bio-oil from packed-bed catalysis over Ni/HZSM-5 with the addition of ethanol vapor coupled with microwave pyrolysis of Douglas fir pellets. 2014 ASABE International Meeting, Montreal, Quebec Canada July 13 – July 16, 2014

58. L. Wang, H. Lei*, Q. Bu, S. Ren, Y. Wei, L. Zhu, X. Zhang, Y. Liu, G. Yadavalli. Comparison of aromatic hydrocarbon production and distribution between in-situ and ex-situ catalytic pyrolysis of wood sawdust. 2014 ASABE International Meeting, Montreal, Quebec Canada July 13 – July 16, 2014

2013 International Conference Papers and Presentations (10):

57. S. Ren, H. Lei*, S. Chen, and J. Wu. Biomass and torrefied biomass catalytic pyrolysis and bio-oil upgrading over a biomass derived carbon catalyst. 2013 International Conference on the Thermochmical Conversion Science, Chicago, IL, 3-6 September 2013

56. L. Wang, H. Lei*, S. Ren, Q. Bu, J. Liang, Y. Wei, Y. Liu, J. Tang.  Aromatic hydrocarbons production from catalysis of douglas fir sawdust pellets pyrolysis vapor over zeolite catalyst. 2013 AIChE Annual Meeting, San Francisco, California, November 3 – 8, 2013

55. L. Zhu, H. Lei*, L. Wang, Q. Bu, J. Liang, Y. Wei, Y. Liu. Catalytic Microwave Pyrolysis of Douglas Fir Pellets With Carbon Catalysts Derived From Corn Stover. 2013 AIChE Annual Meeting, San Francisco, California, November 3 – 8, 2013

54. Y. Wei, H. Lei*, Q. Bu, J. Liang, Y. Liu, S. Ren, L. Wang. Advanced Upgrading of Pyrolysis Oil Via Liquid-Liquid Extraction. 2013 AIChE Annual Meeting, San Francisco, California, November 3 – 8, 2013

53. Q. Bu, H. Lei*, L. Wang, and J. Tang. Biofuel production and kinetics study of catalytic microwave pyrolysis of douglas fir pellet over activated carbon supported metal catalyst. 2013 AIChE Annual Meeting, San Francisco, California, November 3 – 8, 2013

52. Q. Bu, H. Lei*, S. Ren, L. Wang, Y. Liu, J. Liang, Y. Wei, Q. Zhang, J. Tang. Renewable phenols and fuel production from catalytic pyrolysis of lignin using microwave irradiation heating. 2013 ASABE International Meeting, Kansas City, Missouri, July 21-24, 2013

51. S. Ren, H. Lei*, L. Wang, Q. Bu, Y. Liu, J. Liang, Y. Wei, S. Chen, J. Wu. Thermal behavior and kinetic study for woody torrefied biomass pyrolysis by TGA. 2013 ASABE International Meeting, Kansas City, Missouri, July 21-24, 2013

50. L. Wang, H. Lei*, Q. Bu, L. Zhu, Y. Liu, J. Lee, S. Chen, J. Tang.  Catalytic upgrading of Douglas fir sawdust pellet vapors over Zn/ZSM-5 catalysts in a packed-bed catalysis reactor. 2013 ASABE International Meeting, Kansas City, Missouri, July 21-24, 2013

49. L. Zhu, H. Lei*, L. Wang, Q. Bu, J. Liang, Y. Wei, Y. Liu. Carbon catalysts from Corn Stover and its Application to Catalytic Microwave Pyrolysis. 2013 ASABE International Meeting, Kansas City, Missouri, July 21-24, 2013

48. Y. Wei, H. Lei*, Q. Bu, J. Liang, Y. Liu, S. Ren, L. Wang. Advanced analysis of products from organosolv lignin by microwave pyrolysis. 2013 ASABE International Meeting, Kansas City, Missouri, July 21-24, 2013

2012 International Conference Papers and Presentations (8):

47. S. Ren, H. Lei*, L. Wang, Q. Bu, Y. Liu, J. Liang, Y. Wei, S. Chen, J. Wu, and R. Ruan. Furfural production from microwave catalytic torrefaction of Douglas fir sawdust pellets. 2012 AICHE Annual Meeting, Pittsburgh, PA in Oct.-Nov. 2012

46. J. Liang, H. Lei*, Y. Liu, Y. Wei, L. Wang, Q. Bu, S. Ren, J. Tang, Q. Zhang. A review on renewable hydrogen generation by reforming of glycerol. 2012 ASABE International Meeting, Dallas, Texas, July 29-Aug 1, 2012

45. Y. Wei, H. Lei*, Q. Bu, J. Liang, Y. Liu, S. Ren, L. Wang, J. Tang, Q. Zhang. Renewable hydrocarbons produced from glucose by aqueous-phase reforming process. 2012 ASABE International Meeting, Dallas, Texas, July 29-Aug 1, 2012

44. Y. Liu, H. Lei*, S. Ren, A. Zacher, Q. Bu, J. Liang, Y. Wei, L. Wang, Q. Zhang, J. Tang. Biomass torrefaction and bio-oil upgrading over HZSM-5. 2012 ASABE International Meeting, Dallas, Texas, July 29-Aug 1, 2012

43. S. Ren, H. Lei*, L. Wang, Q. Bu, Y. Liu, J. Liang, Y. Wei, S. Chen, J. Wu, and R. Ruan. Optimum conditions and characteristics of products from microwave torrefaction of Douglas fir sawdust pellet. 2012 ASABE International Meeting, Dallas, Texas, July 29-Aug 1, 2012

42. S. Ren, H. Lei*, A. Zacher, Y. Liu, L. Wang, Q. Bu, J. Liang, Y. Wei, S. Chen, J. Wu. High quality biofuel production from torrefied biomass. 2012 ASABE International Meeting, Dallas, Texas, July 29-Aug 1, 2012

41. Q. Bu, H. Lei*, S. Ren, L. Wang, Y. Liu, J. Liang, Y. Wei, Q. Zhang, J. Tang, and R. Ruan. Phenols and fuels from catalytic microwave pyrolysis of lignocellulosic biomass. 2012 ASABE International Meeting, Dallas, Texas, July 29-Aug 1, 2012

40. L. Wang, H. Lei*, S. Ren, Q. Bu, J. Liang, Y. Wei, Y. Liu, J. Tang, Q. Zhang, and R. Ruan. Aromatic hydrocarbons from catalytic conversion of microwave assisted pyrolysis of pine wood over ZSM-5 Zeolite. 2012 ASABE International Meeting, Dallas, Texas, July 29-Aug 1, 2012

2011 International Conference Papers and Presentations (5):

39. S. Ren, H. Lei*, J. Julson, L. Wang, Q. Bu. 2011. The effects of reaction temperature and time on microwave torrefaction of corn stover. 2011 ASABE International Meeting, Louisville, Kentucky, Aug 7-10, 2011

38. S. Ren, H. Lei*, J. Julson, L. Wang, Q. Bu. 2011. Microwave pyrolysis of douglas fir sawdust pellet. 2011 ASABE International Meeting, Louisville, Kentucky, Aug 7-10, 2011

37. L. Wang, H. Lei*, S. Ren, Q. Bu. 2011. Mircowave assisted pyrolysis of Douglas fir over ZSM-5 Zeolite catalysts. 2011 ASABE International Meeting, Louisville, Kentucky, Aug 7-10, 2011

36. Q. Bu, H. Lei*, S. Ren, and L. Wang. 2011. Biofuel production from one-step conversion using formic acid-alcohol as reaction medium. 2011 ASABE International Meeting, Louisville, Kentucky, Aug 7-10, 2011

35. R. Ruan*, P. Chen, J. zhou, M. Min, y. Cheng, M. Mohr, y. Li, B. Hu, X. Ma, L. Li, Y. Zhao, Z. Du, X. Wang, y. Li, S. Deng, H. Lei, X. Lin, y.Liu, y. Wan, B. Martinez. 2011. Mass culture of algae for biofuel production and wastewater treatment in northern climates. 4th Congress of the International Society for Applied Phycology, Halifax, Canada

2010 International Conference Papers and Presentations (5):

34. R. Zhou, H. Lei*, J. Julson. 2010. Fast Pyrolysis Optimization of Corn Stover, Switch Grass and Prairie Cordgrass for the Production of Bio-Oil and Volatiles. Paper # 1009439. 2010 ASABE Annual International Meeting, Pittsburgh, Pennsylvania, June 20- 23, 2010

33. H. Lei*, S. Ren, J. Julson. 2010. Microwave Torrefaction of Corn Stover, Paper # 1009448. 2010 ASABE Annual International Meeting, Pittsburgh, Pennsylvania, June 20- 23, 2010

32. H. Lei*†, R. Zhou, and J. Julson. 2010. Comparison of Productions from the Pyrolysis of Three Biomasses: Corn Stover, Switch Grass and Prairie Cordgrass. paper# 1009834. 2010 ASABE Annual International Meeting, Pittsburgh, Pennsylvania, June 20- 23, 2010

31. I. Cybulska, H. Lei*, J. Julson. 2010. Optimization of Clean Fractionation as a Biomass Pretreatment Method. paper# 1008847. 2010 ASABE Annual International Meeting, Pittsburgh, Pennsylvania, June 20- 23, 2010

30. I. Cybulska, H. Lei*, J. Julson.  2010. Hydrothermal Pretreatment and Enzymatic Hydrolysis of Prairie Cord Grass. paper# 1008844. 2010 ASABE Annual International Meeting, Pittsburgh, Pennsylvania, June 20- 23, 2010

2009 International Conference Papers and Presentations (2):

29. H. Lei*, S. Ren, R. Zhou, and J. Julson. Particle size of corn stover on pyrolysis. 2009 ASABE Annual International Meeting, Reno, Nevada, June 21-24

28. H. Lei*, S. Ren, R. Zhou, and J. Julson. Optimization of pyrolysis conditions for the production of biooil and biogas from corn distiller’s dried grains with solubles (DDGS). 2009 ASABE Annual International Meeting, Reno, Nevada, June 21-24

2008 International Conference Papers and Presentations (7):

27. H. Lei*, K. Hennessey, Y. Liu, X. Lin, Y. Wan and R. Ruan. Optimization of hydrothermal pretreatment of corn stover. 2008 ASABE Annual International Meeting, Providence, Rhode Island, June 29- July 2, 2008

26. H. Lei*, K. Petrofsky, A. Hohn, X. Cao, P. Chen, R. Ruan. Microscopic Examination of Structural Changes in Wheat bran due to Pulverization and Enzymatic Hydrolysis. 2008 ASABE Annual International Meeting, Providence, Rhode Island, June 29- July 2, 2008

25. C. Yang, J. Moen, B. Zhang, K. Hennessy, H. Lei, Y. Liu, P. Chen and R. Ruan*. 2008. Fractionation and characterization of bio-oil from biomass pyrolysis. 30th Symposium on Biotechnology for Fuels and Chemicals, New Orleans, LA

24. J. Moen, B. Zhang, C. Yang, Z. Le, K. Hennessy, H. Lei, Y. Liu, P. Chen and R. Ruan*. 2008. Catalytic Microwave-Assisted Pyrolysis of High-diversity Grassland Perennials. 30th Symposium on Biotechnology for Fuels and Chemicals, New Orleans, LA

23. K. Hennessy, B. Zhang, C. Yang, H. Lei, Y. Liu, P. Chen and R. Ruan*. 2008. A continuous plug-flow system for hydrothermal processing of aqueous biomass. 30th Symposium on Biotechnology for Fuels and Chemicals, New Orleans, LA

22. R. Ruan, K. Petrofsky, H. Lei*, A. Hohn, P. Chen, L. Marquart. 2008. High-pressure homogenization and enzymatic treatment of bran. IFT Symposium: Designing and delivering whole grains with enhanced health attributes. 2008 IFT Annual Meeting, New Orleans, Louisiana, June 28, 2008 – July 2, 2008

21. R. Ruan*, Y. Li, X. Lin, X. Ye, H. Lei, P. Chen. 2008. Magnetic resonance imaging of foods. IFT Symposium: Water in Foods. 2008 IFT Annual Meeting, New Orleans, Louisiana, June 28, 2008 – July 2, 2008

2007 International Conference Papers and Presentations (3):

20. H. Lei*, R. G. Fulcher, R. Ruan, B. van Lengerich. 2007. Prediction of water solubility index of rice extrudates from a co-rotating twin-screw extruder. 2007 ASABE Annual International Meeting, Minneapolis, Minnesota, June 17-20, 2007

19. H. Lei*, R. G. Fulcher, R. Ruan, B. van Lengerich. 2007. Changes in CIElab color parameters in twin-screw extruded rice-glucose-lysine blend. 2007 ASABE Annual International Meeting, Minneapolis, Minnesota, June 17-20, 2007

18. H. Lei*, R. G. Fulcher, R. Ruan, B. van Lengerich. 2007. Color development in an extrusion-cooked model system. 2007 IFT Annual Meeting. Chicago, Illinois. July 27-August 1, 2007

2006 International Conference Papers and Presentations (3):

17. H. Lei*, R. G. Fulcher, R. Ruan, B. van Lengerich. 2006. Assessment of color development due to twin-screw extrusion of rice-glucose-lysine blend using computer vision. Paper No. 066100. 2006 ASABE Annual International Meeting, Portland, Oregon, July 9 – 12, 2006

16. H. Lei*, R. G. Fulcher, R. Ruan, B. van Lengerich. 2006. Reaction kinetics of color development in an extrusion-cooked model system. Paper No. 066113. 2006 ASABE Annual International Meeting, Portland, Oregon, July 9 – 12, 2006

15. R. Ruan*, S. Deng, X. Lin, H. Lei, P. Chen. 2006. Non-thermal plasma disinfection of foods. In Symposium: “Nonthermal Processing: Food Quality and Chemistry”, 2006 American Chemical Society (ACS) Annual Meeting, Atlanta, Georgia, March 26-30, 2006

2005 International Conference Papers and Presentations (5):

14. H. Lei*, G. Fulcher, R. Ruan, and B. van Lengerich. 2005. Mean residence time analysis for a co-rotating twin-screw extruder. Paper No. 31050. 2005 IFT Annual Meeting, New Orleans, Louisiana, July 15-20, 2005

13. H. Lei*, G. Fulcher, R. Ruan, and B. van Lengerich. 2005. Modeling extrusion system parameters in a co-rotating twin-screw extruder. Paper No. 31005. 2005 IFT Annual Meeting, New Orleans, Louisiana, July 15-20, 2005

12. H. Lei*, G. Fulcher, R. Ruan, and B. van Lengerich. 2005. Residence time distribution and mean residence time in a co-rotating twin-screw extruder. Paper No. 056112. 2005 ASAE Annual International Meeting, Tampa, Florida, July 17-20, 2005

11. H. Lei*, G. Fulcher, R. Ruan, and B. van Lengerich. 2005. Modeling die Pressure, die temperature, shaft torque, and SME in a co-rotating twin-screw extruder. Paper No. 056113. 2005 ASAE Annual International Meeting, Tampa, Florida, July 17-20, 2005

10. H. Lei*, G. Fulcher, R. Ruan, and B. van Lengerich. 2005. Prediction of water solubility index of rice extrudate in a co-rotating twin-screw extruder. 2005 International Conference of Cereal Science and Technology, Veyna, Austia, June 29-July 1, 2005

2004 International Conference Papers and Presentations (2):

9. H. Lei*, G. Fulcher, R. Ruan, and B. van Lengerich. 2004. Twin screw extrusion of rice flour-effects of extrusion processing conditions on extrudate characteristics. Paper No. 25837. 2004 IFT Annual Meeting, Las Vegas, Nevada, July 12-16, 2004

8. H. Lei*, G. Fulcher, R. Ruan, and B. van Lengerich. 2004. Influence of processing on the extrudate characteristics of rice flour. Paper No. 046013. 2004 ASAE Annual International Meeting, Ottawa, Canada, August 1-4, 2004

2003 International Conference Papers and Presentations (3):

7. H. Lei*, G. Fulcher, R. Ruan, and K. Schmitz. 2003. Effects of processing conditions on cereal fibers by twin screw extrusion. Paper No. 036072. 2003 ASAE Annual international Meeting, Las Vegas, Nevada, July 27-30, 2003

6. H. Lei*, G. Fulcher, R. Ruan, and K. Schmitz. 2003. Effects of processing conditions on wheat bran by twin screw extrusion. Paper No. 20066. 2003 IFT Annual Meeting, Chicago, Illinois, July 12-16, 2003

5. H. Lei*, R. Ruan, P. Chen, S. Deng, X. Lin, G. Fulcher, W. F. Wilcke. 2003. Ozonation steeping in corn wet milling process. Paper No. 20132. 2003 IFT Annual Meeting, Chicago, Illinois, July 12-16, 2003

2002 and Before International Conference Papers and Presentations (4):

4. R. Ruan, H. Lei*, P. Chen, S. Deng. 2002. Study on ozone-aided corn steeping processing. Paper No. 036072. 2002 ASAE Annual International Meeting/CIGR World Congress, Chicago, Illinois, July 29 – August 1, 2002

3. X. Pan, R. Ruan*, H. Lei, X. Lin, Y. Liu, P. Chen, V. Morey, T. Yang. 2002. Preparation of polyurethane and polyester from liquefied starch. 2002 ASAE Annual International Meeting, Chicago, Illinois, July 29 – August 1, 2002

2. H. Ma, R. Ruan*, P. Chen, H. Lei. 2002. A study of a new ozone generator induced by pulse streamer corona discharge plasma. 2002 ASAE Annual International Meeting, Chicago, Illinois, July 29 – August 1, 2002

1. H. Lei*. 1998. A study of improving production quality of the ready-to-serve rice. In 1998 Chinese National Agricultural Product Drying and Storing Machinery Symposium, Kunming, China

Regional Conference Presentations (23)

23. X. Zhang, H. Lei*, G. Yadavalli, L. Zhu, M. Qian, Z. Zhu. 2016. Synthesis of high-density jet fuel from plastics via catalytically integral processes. 2016 WSU ShowCase Conference, Pullman, Washington, March 25, 2016

22. H. Lei*, L. Zhu, X. Zhang, Y. Wei, Y. Liu, G. Yadavalli. Jet fuels of aromatics and cycloalkanes from integrated catalytic processes of diverse lignocellulosic biomasses. 2015 Inaugural Clean Technology Showcase, Washington Clean Technology Alliance, Bell Harbor Conference Center, Seattle, WA, June 22, 2015

21. Invited presentation: H. Lei*. 2015. Green engineering of processes, biofuels, and bioproducts from biomass. 2015 Delegation from Shanghai Environmental Protection Bureau, Academy of Environmental Sciences, and Shanghai Geodetic Institute, Puyallup, WA, April 10, 2015

20. X. Zhang, L. Zhu, G. Yadavalli, Y. Wei, Y. Liu, D. Yan, H. Lei*. 2015. Cycloalkanes and aromatics for jet fuels from integrated catalytic processes of diverse lignocellulosic biomasses, 2015 JCATI Research Symposium: Advancing Public-Private Partnerships in Aerospace, Seattle, WA, April 20, 2015

19. L. Zhu, H. Lei*, X. Zhang, G. Yadavalli Y. Wei, Y. Liu. 2015. Production of hydrocarbons from biomass through in situ microwave-assisted catalytic pyrolysis using carbon catalyst. 2015 WSU ShowCase Conference, Pullman, WA, March 28, 2015

18. X. Zhang, H. Lei*, G. Yadavalli, L. Zhu, Y. Wei, Y. Liu. 2015. Production of gasoline-range hydrocarbons from microwave-induced pyrolysis of low-density polyethylene. 2015 WSU ShowCase Conference, Pullman, WA, March 28, 2015

17. H. Lei*. 2014. Processes, Biofuels, and Bioproducts from Lignocellulosic Biomass. Washington State University Congressional and State Staff Fact Finding Tour August 12-14, 2014

16. H. Lei*, L. Zhu, X. Zhang, L. Wang, Y. Wei, Y. Liu, G. Yadavalli, S. Ren, Q. Bu. Aromatic Hydrocarbons for Aviation Biofuels from Microwave-assisted Catalytic Pyrolysis of Lignocellulosic Biomass. 2014 Inaugural Clean Technology Showcase, Washington Clean Technology Alliance, Bell Harbor Conference Center, Seattle, WA

15. Invited: H. Lei*. 2014. Aromatic hydrocarbons for aviation biofuels from lignocellulosic biomass. 2014 JCATI Research Symposium: Advancing Public-Private Partnerships in Aerospace, Pullman, WA

14. L. Zhu, X. Zhang, L. Wang, Y. Wei, Y. Liu, G. Yadavalli, S. Ren, Q. Bu, H. Lei*. 2014. Aromatic Hydrocarbons for Aviation Biofuels from Microwave-assisted Catalytic Pyrolysis of Lignocellulosic Biomass. 2014 JCATI Research Symposium: Advancing Public-Private Partnerships in Aerospace, Pullman, WA

13. X. Zhang, H. Lei*, L. Wang, Y. Wei, L. Zhu, Y. Liu, G. Yadavalli. 2014. Hydrocarbons from microwave-assisted catalytic pyrolysis of pretreated Douglas fir. 2014 WSU ShowCase Conference, Pullman, WA

12. H. Lei*. 2014. Processes, biofuels, and bioproducts. 2014 WSU and PNNL workshop, Richland, WA

11. L. Zhu, H. Lei*, L. Wang, X. Zhang, Y. Wei, Y. Liu, G. Yadavalli. 2014. Influence of Microwave-assisted Pyrolysis Conditions on Physicochemical Characteristics of Corn Stover Biochar. 2014 WSU ShowCase Conference, Pullman, WA

10. Q. Bu, H. Lei*, L. Wang, Q. Zhang, J. Tang and R. Ruan. Catalytic pyrolysis of lignin for phenols and fuel production by microwave-assisted heating. 2013 WSU ShowCase Conference, Pullman, WA

9. L. Wang, H. Lei*, S. Ren, Q. Bu, J. Tang, Q. Zhang, and R. Ruan. Microwave assisted pyrolysis of Douglas fir over ZSM-5 Zeolite. 2011 WSU ShowCase Conference, Pullman, WA

8. S. Ren, H. Lei*, J. Julson, L. Wang, Q. Bu, and R. Ruan. The Effects of Reaction Temperature and Time on Microwave Torrefaction of Corn Stover. 2011 WSU ShowCase Conference, Pullman, WA

7. Q. Bu, H. Lei*, S. Ren, L. Wang, and R. Ruan. Biofuel production from one-step conversion using formic acid-alcohol as reaction medium. 2011 WSU ShowCase Conference, Pullman, WA

6. H. Lei*. 2010. Biofuels and bioproducts from biomass. In 2010 Energy Independence Day, Olympia, WA

5. B. Ahring, H. Lei, B. Yang, and X. Zhang. 2010. Advance knowledge in bioproducts and bioenergy research and create value in washington state economy. In 2010 Seattle Future Energy Conference-Bioenergy Research Symposium, Seattle, WA

4. D. Elliott*, H. Lei*, S. Ren, A. Zacher, T. Hart. 2010. Infrastructure compatible fuels and chemicals from biomass. 2010 DOE-PNNL Bioenergy Conference, Richland, WA

3. H. Lei* and S. Ren. 2010. Particle Size of Corn Stover on Microwave Assisted Pyrolysis. 2010 WSU ShowCase Conference, Pullman, WA

2. D. D. Malo, S. A. Clay*, T.E. Schumacher, H. J. Woodard, D. E. Clay, R. H. Gelderman, H. Lei and J. L. Julson. Interactions of biochar source/properties impacts on soil properties, c sequestration potential, and crop management. In 2010 SunGrant Annual Meeting, Reno, NV

1. H. Lei*, G. Fulcher, R. Ruan, C. Ng, D. Green, and B. van Lengerich. 2005. Reaction kinetics modeling of rice flour extrusion in a twin screw extruder. General Mills internal conference, Minneapolis