title: Mesophilic-hydrothermal-thermophilic (M-H-T) digestion of green corn straw.
abstract: Mesophilic-hydrothermal (80-160 °C, 30 min)-thermophilic (M-H-T) digestion and control tests of mesophilic (M), thermophilic (T), hydrothermal-mesophilic (H-M), and mesophilic-thermophilic digestion (M-T) of green corn straw were conducted for a 20-day fermentation period. The results indicate that M-H-T is an efficient method to improve methane production. A maximum methane yield of 371.74 mL/g volatile solid was obtained by the M (3 days)-H (140 °C)-T (17 days) process, which was 20.44%, 16.55%, 31.44%, and 14.31% higher than the yields of the M, T, 140-M, and M-T processes. The enhanced methane production was attributed to (1) the improved hemicellulose degradation and lignin disorganization; (2) prevention of the degradation of soluble sugar, easily hydrolyzed hemicellulose and cellulose into furfural and methylfurfural; and (3) lack of formation of Maillard reaction products during initial hydrothermal treatment.
authors.affiliation: Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Li
authors.affiliation: Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China.
authors.forename: Qingjing
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China.
authors.forename: Jiang
authors.initials: J
authors.lastname: Li
authors.affiliation: Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China.
authors.forename: Zhidong
authors.initials: Z
authors.lastname: Li
authors.affiliation: Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China.
authors.forename: Yuexiang
authors.initials: Y
authors.lastname: Yuan
authors.affiliation: Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China.
authors.forename: Zhiying
authors.initials: Z
authors.lastname: Yan
authors.affiliation: Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Biogas Institute of Ministry of Agriculture, Chengdu 610041, China.
authors.forename: Zili
authors.initials: Z
authors.lastname: Mei
authors.affiliation: Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China. Electronic address: lxf3636@163.com.
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Liu
mesh_terms: D001709:Biotechnology / Q000379:methods*; D006868:Hydrolysis; D008031:Lignin / Q000378:metabolism; D008697:Methane / Q000096:biosynthesis; D013696:Temperature; D013997:Time Factors; D014866:Waste Products; D014867:Water / Q000737:chemistry*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D014866:Waste Products; D014867:Water; C036909:lignocellulose; D008031:Lignin; D008697:Methane
keywords: Anaerobic digestion; Chemical composition; Corn straw; Hydrothermal treatment; Methane yield