title: Microbial pretreatment of corn stovers by solid-state cultivation of Phanerochaete chrysosporium for biogas production.
abstract: The microbial pretreatment of corn stover and corn stover silage was achieved via the solid-state cultivation of Phanerochaete chrysosporium; pretreatment effects on the biodegradability and subsequent anaerobic production of biogas were investigated. The peak levels of daily biogas production and CH₄ yield from corn stover silage were approximately twice that of corn stover. Results suggested that ensiling was a potential pretreatment method to stimulate biogas production from corn stover. Surface morphology and Fourier-transform infrared spectroscopy analyses demonstrated that the microbial pretreatment of corn stover silage improved biogas production by 10.5 to 19.7% and CH4 yield by 11.7 to 21.2% because pretreatment could decrease dry mass loss (14.2%) and increase substrate biodegradability (19.9% cellulose, 32.4% hemicellulose, and 22.6% lignin). By contrast, the higher dry mass loss in corn stover (55.3%) after microbial pretreatment was accompanied by 54.7% cellulose, 64.0% hemicellulose, and 61.1% lignin degradation but did not significantly influence biogas production.
authors.affiliation: Key Laboratory of Clean Utilization Technology for Renewable Energy in Ministry of Agriculture, College of Engineering, China Agricultural University, 100083, Beijing, People's Republic of China.
authors.forename: Shan
authors.initials: S
authors.lastname: Liu
authors.forename: Shubiao
authors.initials: S
authors.lastname: Wu
authors.forename: Changle
authors.initials: C
authors.lastname: Pang
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Renjie
authors.initials: R
authors.lastname: Dong
mesh_terms: D000693:Anaerobiosis; D056804:Biofuels; D002482:Cellulose / Q000737:chemistry / Q000378:metabolism; D006868:Hydrolysis; D008031:Lignin / Q000737:chemistry / Q000378:metabolism; D020075:Phanerochaete / Q000378:metabolism*; D003313:Zea mays / Q000378:metabolism* / Q000382:microbiology
chemical_list: D056804:Biofuels; D002482:Cellulose; D008031:Lignin