Anaerobic co-digestion of chicken manure and corn stover in batch and continuously stirred tank reactor (CSTR)

作者：Li, Yeqing; Zhang, Ruihong; He, Yanfeng; Zhang, Chenyu; Liu, Xiaoying; Chen, Chang^*; Liu, Guangqing

来源：Bioresource Technology, 2014, 156: 342-347.

DOI：10.1016/j.biortech.2014.01.054

• Co-digestion
• Chicken manure
• Corn stover
• Biogas digestate
• Pyrolysis

Anaerobic co-digestion of chicken manure and corn stover in batch and CSTR were investigated. The batch co-digestion tests were performed at an initial volatile solid (VS) concentration of 3 g VS/L, carbon-to-nitrogen (C/N) ratio of 20, and retention time of 30 d. The methane yield was determined to be 281 +/- 12 mL/g VSadded. Continuous reactor was carried out with feeding concentration of 12% total solids and C/N ratio of 20 at organic loading rates (OLRs) of 1-4 g VS/L/d. Results showed that at OLR of 4 g VS/L/d, stable and preferable methane yield of 223 +/- 7 mL/g VSadded was found, which was equal to energy yield (EY) of 8.0 +/- 0.3 MJ/kg VSadded. Post-digestion of digestate gave extra EY of 1.5-2.6 MJ/kg VSadded. Pyrolysis of digestate provided additional EY of 6.1 MJ/kg VSadded. Pyrolysis can be a promising technique to reduce biogas residues and to produce valuable gas products simultaneously.

• 出版日期2014-3
• 单位北京化工大学