Abstract：
:The effects of antifoaming agents on fermentative hydrogen production using galactose in batch and continuous operations were investigated. Batch hydrogen production assays with LS-303 (dimethylpolysiloxane), LG-109 (polyalkylene), LG-126 (polyoxyethylenealkylene), and LG-299 (polyether) showed that the doses and types of antifoaming agents played a significant role in hydrogen production. During batch tests, LS-303 at 100μL/L resulted in the maximum hydrogen production rate (HPR) and hydrogen yield (HY) of 2.5L/L-d and 1.08mol H2/mol galactoseadded, respectively. The following continuously stirred tank reactor operated at 12h HRT with LS-303 at 100μL/L showed a stable HPR and HY of 4.9L/L-d and 1.17mol H2/mol galactoseadded, respectively, which were higher than those found for the control reactor. Microbial community analysis supported the alterations in H2 generation under different operating conditions and the stimulatory impact of certain antifoaming chemicals on H2 production was demonstrated.
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Sivagurunathan P,Anburajan P,Kumar G,Bakonyi P,Nemestóthy N,Bélafi-Bakó K,Kim SHdoi
10.1016/j.biortech.2016.02.121subject
Has Abstractpub_date
2016-08-01 00:00:00pages
121-128eissn
0960-8524issn
1873-2976pii
S0960-8524(16)30267-Xjournal_volume
213pub_type
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