BioChem - DOS

An online-monitored thermophilic hydrogen production UASB reactor for long-term stable operation

International journal of hydrogen energy

Dong, F.; Li, W.W.; Sheng, G.P.; Tang, Y.; Yu, H.Q.; Harada, H.

In this study, the H<SUB>2</SUB> production and chemical oxygen demand (COD) removal performances of a thermophilic upflow anaerobic sludge blanket (UASB) reactor with online monitoring system were investigated. The online monitoring system enabled a rapid monitoring and timely control of the process. As a consequence, high operating stability was achieved despite of the varied hydraulic retention time (HRT) during 310-day operation. The COD efficiency remained at above 98%, and the hydrogen yield fluctuated slightly within the range of 2.42-3.06 mol H<SUB>2</SUB> mol<SUP>-1</SUP> sucrose. Thermophilic H<SUB>2</SUB>-producing granules were successfully cultivated in this reactor, which showed better physical and microbial properties than floc sludge and higher H<SUB>2</SUB> production rate than mesophilic granules. An analysis of the microbial growth kinetics further demonstrated a possibly higher synthesis and metabolism activity of microbes in the thermophilic granule state.

2011

Pergamon Press ; Elsevier Science Ltd

0360-3199

1879-3487

36

21

pp.13559-13565

10.1016/j.ijhydene.2011.08.010

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART57433355

Granule; H2 production; Hydraulic retention time (HRT); Online monitoring; Thermophilic; Upflow anaerobic sludge blanket (UASB)