BioChem - DOS

Bioelectrochemical enhancement of hydrogen and methane production from the anaerobic digestion of sewage sludge in single-chamber membrane-free microbial electrolysis cells

International journal of hydrogen energy

Guo, X.; Liu, J.; Xiao, B.

Batch tests were carried out to investigate the bioelectrochemical enhancement of hydrogen and methane production from the anaerobic digestion of sewage sludge in single-chamber membrane-free microbial electrolysis cells (MEC) and non-MECs. Hydrogen and methane were produced from the anaerobic digestion of sewage sludge in all reactors. Compared with controls, hydrogen production was enhanced 1.7-5.2-fold, and methane production 11.4-13.6-fold with Ti/Ru electrodes at applied voltages of 1.4 and 1.8 V, respectively. Most of hydrogen was produced in the first 5 days of digestion and most of methane was generated after 5 days. No oxygen was detected in the biogas and no hydrogen production was detected in the control test with water. The applied voltages can enhance the removal of suspended and volatile suspended solids, increase the transformation of soluble chemical oxygen demand, accelerate the conversion of volatile fatty acids and maintain an optimal pH range for methanogen growth.

2013

Pergamon Press ; Elsevier Science Ltd

0360-3199

1879-3487

38

3

pp.1342-1347

10.1016/j.ijhydene.2012.11.087

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART65281142

Anaerobic digestion; Bioelectrochemical enhancement; Hydrogen and methane production; Sewage sludge; Single-chamber membrane-free microbial electrolysis cells