title: Fast pyrolysis product distribution of biopretreated corn stalk by methanogen.
abstract: After pretreated by methanogen for 5, 15 and 25 days, corn stalk (CS) were pyrolyzed at 250, 300, 350, 400, 450 and 500 °C by Py-GC/MS and product distribution in bio-oil was analyzed. Results indicated that methanogen pretreatment changed considerably the product distribution: the contents of sugar and phenols increased; the contents of linear carbonyls and furans decreased; the contents of linear ketones and linear acids changed slightly. Methanogen pretreatment improved significantly the pyrolysis selectivity of CS to phenols especially 4-VP. At 250 °C, the phenols content increased from 42.25% for untreated CS to 79.32% for biopretreated CS for 5 days; the 4-VP content increased from 28.6% to 60.9%. Increasing temperature was contributed to convert more lignin into 4-VP, but decreased its content in bio-oil due to more other chemicals formed. The effects of biopretreatment time on the chemicals contents were insignificant.
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: Zaixing
authors.initials: Z
authors.lastname: Jin
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*; D006358:Hot Temperature; D008697:Methane / Q000378:metabolism*; D010636:Phenols / Q000737:chemistry; D013997:Time Factors; D014866:Waste Products / Q000032:analysis*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D010636:Phenols; D014866:Waste Products; C030626:4-vinylphenol; D008697:Methane
keywords: Biopretreatment; Corn stalk; Fast pyrolysis; Methanogen; Py–GC/MS