BioChem - DOS

Revivability of fermentative hydrogen producing bioreactors

International journal of hydrogen energy

Baghchehsaraee, B.; Nakhla, G.; Karamanev, D.; Margaritis, A.

In this study we investigated the revivability of a continuous biological hydrogen producing reactor after a period of feed interruption. Before the feed interruption, the hydrogen production yield was 1.36 mol H<SUB>2</SUB>/mol glucose with butyric acid and acetic acid as the main metabolic products. However, after feed interruption, butyric acid formation completely stopped and the hydrogen yield decreased to 0.29 mol H<SUB>2</SUB>/mol glucose. Lactic acid, ethanol and acetic acid became the main metabolites after re-start up. Reduction of organic loading rate together with increasing the pH after the feed interruption resulted in an increase in the hydrogen yield to 0.7 mol H<SUB>2</SUB>/mol glucose. The microbial community dynamics showed complete elimination of Clostridium affiliated strains and predominance of Lactobacillus affiliated strains after the re-start up of the reactor.

2011

Pergamon Press ; Elsevier Science Ltd

0360-3199

1879-3487

36

3

pp.2086-2092

10.1016/j.ijhydene.2010.11.038

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART55395976

Carbon mass balance; Biological hydrogen production; Dark fermentation; PCR-DGGE; CSTR; Feed interruption