Biogas by two-stage microbial anaerobic and semi-continuous digestion of Chinese cabbage waste

Xiaoying Dong; Lijie Shao; Yan Wang; Wei Kou; Yanxin Cao; Dalei Zhang

doi:10.1016/j.cjche.2015.03.001

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Biogas by two-stage microbial anaerobic and semi-continuous digestion of Chinese cabbage waste

能源、资源与环境技术 | Updated：2026-01-06

- Biogas by two-stage microbial anaerobic and semi-continuous digestion of Chinese cabbage waste
- Chinese Journal of Chemical Engineering Vol. 23, Issue 5, Pages: 847-852(2015)
- Affiliations：
  
  1. 2 Liaoning Institute of Energy Technology,Yingkou,China,115000
  2. 3 MAHLE Engine Components Co., Ltd. Piston Ring Plant,Yingkou,China,115000
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2015.03.001
  CLC：
- Published：2015
- Accepted：
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Xiaoying Dong, Lijie Shao, Yan Wang, Wei Kou, Yanxin Cao, Dalei Zhang. Biogas by two-stage microbial anaerobic and semi-continuous digestion of Chinese cabbage waste[J]. Chin.J.Chem.Eng., 2015, 23(5): 847-852.
DOI：

Xiaoying Dong, Lijie Shao, Yan Wang, Wei Kou, Yanxin Cao, Dalei Zhang. Biogas by two-stage microbial anaerobic and semi-continuous digestion of Chinese cabbage waste[J]. Chin.J.Chem.Eng., 2015, 23(5): 847-852. DOI： 10.1016/j.cjche.2015.03.001.

摘要

Abstract

Anaerobic digestion of Chinese cabbage waste was investigated through a pilot-scale two-stage digester at a mesophilic temperature of 37 ℃. In the acidification digester

the main product was acetic acid

with the maximum concentration of 4289 mg·L

-1

on the fourth day

accounting for 50.32% of total volatile fatty acids. The oxidation reduction potential (ORP) and NH

-N level decreased gradually with hydraulic retention time (HRT) of acidification. In the second digestion phase

the maximum methanogenic bacterial concentration reached 9.6×10

-1

at the organic loading rate (OLR) of 3.5-4 kg VS·m

-3

with corresponding HRT of 12-16 days. Accordingly

the optimal biogas production was 0.62 m

·(kg VS)

-1

with methane content of 65%-68%. ORP and NH

-N levels in the methanizer remained between -500 and -560 mV and 2000-4500 mg·L

-1

respectively. Methanococcus and Methanosarcina served as the main methanogens in the anaerobic digester.

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Department of Water Supply and Environmental Engineering, Arba Minch University, P. O. Box 21, Arba Minch

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