title: Effects of biopretreatment on pyrolysis behaviors of corn stalk by methanogen.
abstract: The study investigated the effects of methanogen pretreatment on pyrolysis behaviors of corn stalk (CS) by using Py-GC/MS analysis and thermogravimetric analysis. Results indicated that biopretreatment changed considerably the pyrolysis behaviors of CS from four weight loss stages to two weight loss stages. Increasing biopretreatment time from 5 days to 25 days enhanced the kinds and contents of chemicals in volatile products. In pyrolysis products, the contents of sugars, linear ketones and furans decreased from 1.43%, 12.60% and 7.38% to 1.25%, 10.22% and 3.25%, respectively, and the contents of phenols increased from 15.08% to 27.84%. The most content change from 6.83% to 13.63% indicated that methanogen pretreatment improved the pyrolysis selectivity of CS to product the 4-VP, but it was disadvantageous to 5-hydroxymethyl furfural, levoglucose and furfural. The changes of chemical compositions and structure of CS after biopretreatment were the main reason of the differences.
authors.affiliation: National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, 2 Beinong Lu, Beijing 102206, China. Electronic address: wtp_771210@yahoo.com.cn.
authors.forename: Tipeng
authors.initials: T
authors.lastname: Wang
authors.affiliation: National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, 2 Beinong Lu, Beijing 102206, China.
authors.forename: Xiaoning
authors.initials: X
authors.lastname: Ye
authors.affiliation: Jilin University, Changchun 130026, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Yin
authors.affiliation: National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, 2 Beinong Lu, Beijing 102206, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Lu
authors.affiliation: National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, 2 Beinong Lu, Beijing 102206, China.
authors.forename: Zongming
authors.initials: Z
authors.lastname: Zheng
authors.affiliation: National Engineering Laboratory for Biomass Power Generation Equipment, North China Electric Power University, 2 Beinong Lu, Beijing 102206, China.
authors.forename: Changqing
authors.initials: C
authors.lastname: Dong
mesh_terms: D001419:Bacteria / Q000378:metabolism*; D001709:Biotechnology / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D008697:Methane / Q000378:metabolism*; D013696:Temperature; D014866:Waste Products; D003313:Zea mays / Q000737:chemistry*
chemical_list: D014866:Waste Products; D008697:Methane
keywords: Biopretreatment; Corn stalk; Methanogen; Pyrolysis; Py–GC/MS