Enhancement of Biogas Yield of Poplar Leaf by High-Solid Codigestion with Swine Manure

Applied Biochemistry and Biotechnology
Li WangliangXu Guangwen

Abstract

The aim of this work was to examine the improvement of anaerobic biodegradability of organic fractions of poplar leaf from codigestion with swine manure (SM), thus biogas yield and energy recovery. When poplar leaf was used as a sole substrate, the cumulative biogas yield was low, about 163 mL (g volatile solid (VS))(-1) after 45 days of digestion with a substrate/inoculum ratio of 2.5 and a total solid (TS) of 22 %. Under the same condition, the cumulative biogas yield of poplar leaf reached 321 mL (g VS)(-1) when SM/poplar leaf ratio was 2:5 (based on VS). The SM/poplar leaf ratio can determine C/N ratio of the cosubstrate and thus has significant influence on biogas yield. When the SM/poplar leaf ratio was 2:5, C/N ratio was calculated to be 27.02, and the biogas yield in 45 days of digestion was the highest. The semi-continuous digestion of poplar leaf was carried out with the organic loading rate of 1.25 and 1.88 g VS day(-1). The average daily biogas yield was 230.2 mL (g VS)(-1) and 208.4 mL (g VS)(-1). The composition analysis revealed that cellulose and hemicellulose contributed to the biogas production.

References

Mar 1, 2011·Critical Reviews in Biotechnology·Joan Mata-AlvarezSergi Astals
Mar 16, 2011·Methods in Enzymology·Irini AngelidakiAlfons J M Stams
Mar 6, 2012·Bioresource Technology·Amel Abbassi-GuendouzRenaud Escudié
May 7, 2013·Bioresource Technology·Qingfeng WangHaijia Su
Nov 23, 2013·Biotechnology for Biofuels·Jean-Charles MotteClaire Dumas

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Citations

Mar 20, 2020·Bioengineered·Shuqing ZhangShengyong Liu

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