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Bio-H2 from wastewater of food industries using mixed culture: experiments and modelling
Ranjana Chowdhury1, Shiladitya Ghosh2, Pinaki Bhattacharya3.
This article describes the performance of a single stage (SS) reactor for hydrogen generation using
a mixed culture of dark (Clostridium sp.) and photo-fermentative (Rhodopseudomonas sp.) bacteria
under dynamic conditions. Simulated wastewater, rich in food grade rice starch, was used as the initial
carbon substrate. The effect of the ratio of the initial concentration of dark to photo-fermentative bacteria
on the cumulative H2 production was assessed. The dynamic trends of concentrations of bacteria
and volatile fatty acids as well as the system pH and cumulative hydrogen production were monitored.
The experimental data were fitted in modified Gompertz model to comparatively assess the hydrogen
production potentials of the individual bacteria and the mixed culture used in the SS reactor. A clear
enhancement of H2 production of the order of three fold was obtained from the SS system over the
individual dark fermentation process when the ratio of the initial concentration of dark to photo bacteria
was maintained at 1:2. The significant increase in the cumulative hydrogen production of the SS reactor
compared to the bioprocess using individual bacteria could be explained by the existence of a commensal
relationship between the dark and photo-fermentative bacteria.
Affiliation:
- Jadavpur University, India
- Jadavpur University, India
- Heritage Institute of Technology, India
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Indexation |
Indexed by |
MyJurnal (2021) |
H-Index
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2 |
Immediacy Index
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0.000 |
Rank |
0 |
Indexed by |
Scopus 2020 |
Impact Factor
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CiteScore (0.3) |
Rank |
Q4 (Multidisciplinary) |
Additional Information |
SJR (0.12) |
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