Abstract:
:In this work, the influence of batch, semi-continuous and continuous mode on biohydrogen production from dark fermentation effluents (DFEs) as substrate and electron distribution was investigated. Results indicated a better H2 production performance was obtained in semi-continuous mode. 50% decanting volume ratio (DVR) and 24 h feeding interval time (FIT) were found to be the best condition. Maximum average H2 production rate (HPR) and H2 yield were obtained of 8.44 mL/h and 1386.22 ± 44.23 mL H2/g TOC, respectively. 37.71% substrate electrons partitioning to hydrogen were detected. For continuous mode, more substrate electrons were diverted toward SMPs with the increasing of HRT due to the fact that longer cell retention, more chances were provided for cell lysis. The bad performance in batch mode ascribed to 56.39% substrate electrons were transferred to cell growth and soluble microbial products (SMPs).
journal_name
Bioresour Technoljournal_title
Bioresource technologyauthors
Li Y,Zhang Z,Xia C,Jing Y,Zhang Q,Li S,Zhu S,Jin Pdoi
10.1016/j.biortech.2020.123549subject
Has Abstractpub_date
2020-09-01 00:00:00pages
123549eissn
0960-8524issn
1873-2976pii
S0960-8524(20)30821-Xjournal_volume
311pub_type
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