Methane production by anaerobic co-digestion of chicken manure and Spartina alterniflora residue after producing methane

The characteristics of Spartina alterniflora residue after producing methane (SAR) digested alone and co-digestion of various proportions of chicken manure and SAR were investigated by batch model at 35 degrees C +/- 1 degrees C. The initial total solid (TS) loading of all treatments was 8.0%. The r...

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Bibliographic Details
Published inHuanjing kexue Vol. 33; no. 1; p. 203
Main Authors Chen, Guang-Yin, Chang, Zhi-Zhou, Ye, Xiao-Mei, Du, Jing, Xu, Yue-Ding, Zhang, Jian-Ying
Format Journal Article
LanguageChinese
Published China 01.01.2012
Subjects
Anaerobiosis
Animals
Chickens
Fermentation
Manure
Methane - metabolism
Poaceae - metabolism
Poaceae - microbiology
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Summary:The characteristics of Spartina alterniflora residue after producing methane (SAR) digested alone and co-digestion of various proportions of chicken manure and SAR were investigated by batch model at 35 degrees C +/- 1 degrees C. The initial total solid (TS) loading of all treatments was 8.0%. The results indicated that there was still some biogas produced by SAR with TS biogas yield of 107.25 mL x g(-1) and average methane content of 76.92%. The cellulose crystallinity of re-digested SAR was destructed by anaerobic microorganisms, and the destruction rate was 5.55%. Co-digestion meliorated the environment where microorganisms lived in and increased the cumulative biogas yield. When the ratio of chicken manure to SAR was 4 : 1, the cumulative biogas yield was highest while the cumulative biogas yield of T1 (the rate of chicken manure to SAR is 5 : 0 based on TS), T3-T6 (the rate of chicken manure to SAR are 3 : 2, 2 : 3, 1 :4 and 0 : 5 based on TS, respectively) were 61.31%, 62.09%, 52.15%, 39.74% and 31.67%
ISSN:0250-3301