BioChem - DOS

Comparison of the use of sucrose and glucose as a substrate for hydrogen production in an upflow anaerobic fixed-bed reactor

International journal of hydrogen energy

Fontes Lima, D.M.; Moreira, W.K.; Zaiat, M.

This study evaluated the use of two types of substrates, glucose and sucrose, feeding an anaerobic fixed-bed bioreactor. The biogas produced was composed of H<SUB>2</SUB> and CO<SUB>2</SUB>, without methane. Maximum hydrogen yields were 3.22 mol H<SUB>2</SUB> mol<SUP>-1</SUP> sucrose<SUB>converted</SUB> and 1.51 mol H<SUB>2</SUB> mol<SUP>-1</SUP> glucose<SUB>converted</SUB>. The main intermediates were acetic acid, butyric acid, and ethanol. The greatest difference, however, was in the stability of the process. The operation of the reactor with sucrose exhibited a drop in biogas production, whereas operation with glucose was stable after a slight decrease in biogas production. This decrease may have been caused by the differential growth of microbial populations in each reactor, namely, the growth of organisms that use the Wood-Ljungdahl metabolic pathway.

2013

Pergamon Press ; Elsevier Science Ltd

0360-3199

1879-3487

38

35

pp.15074-15083

10.1016/j.ijhydene.2013.09.003

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART67346013

Instability in the hydrogen production; Anaerobic up-flow fixed-bed reactor; Sucrose; Glucose; Homoacetogenic microorganisms