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Shubiao Wu

Microbial pretreatment of corn stovers by solid-state cultivation of Phanerochaete chrysosporium for biogas production

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  • Shan Liu, China Agricultural University
  • ,
  • Shubiao Wu
  • Changle Pang, China Agricultural University
  • ,
  • Wei Li, China Agricultural University
  • ,
  • Renjie Dong, China Agricultural University

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.

OriginalsprogEngelsk
TidsskriftApplied Biochemistry and Biotechnology
Vol/bind172
Nummer3
Sider (fra-til)1365-1376
Antal sider12
ISSN0273-2289
DOI
StatusUdgivet - 2014
Eksternt udgivetJa

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