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Augmented biohydrogen production from rice mill wastewater through nano-metal oxides assisted dark fermentation.
- Source :
-
Bioresource technology [Bioresour Technol] 2021 Jan; Vol. 319, pp. 124243. Date of Electronic Publication: 2020 Oct 12. - Publication Year :
- 2021
-
Abstract
- This study highlights biohydrogen production enrichment through NiO and CoO nanoparticles (NPs) inclusion to dark fermentation of rice mill wastewater using Clostridium beijerinckii DSM 791. NiO (~26 nm) and CoO (~50 nm) NPs were intrinsically prepared via facile hydrothermal method with polyhedral morphology and high purity. Dosage dependency studies revealed the maximum biohydrogen production characteristics for 1.5 mg/L concentration of both NPs. Biohydrogen yield was improved by 2.09 and 1.9 folds higher for optimum dosage of NiO and CoO respectively, compared to control run without NPs. Co-metabolites analysis confirmed the biohydrogen production through acetate and butyrate pathways. Maximum COD reduction efficiencies of 77.6% and 69.5% were observed for NiO and CoO inclusions respectively, which were higher than control run (57.5%). Gompertz kinetic model fitted well with experimental data of NPs assisted fermentation. Thus, NiO and CoO inclusions to wastewater fermentation seems to be a promising technique for augmented biohydrogen production.<br /> (Copyright © 2020 Elsevier Ltd. All rights reserved.)
- Subjects :
- Fermentation
Hydrogen analysis
Oxides
Oryza
Wastewater
Subjects
Details
- Language :
- English
- ISSN :
- 1873-2976
- Volume :
- 319
- Database :
- MEDLINE
- Journal :
- Bioresource technology
- Publication Type :
- Academic Journal
- Accession number :
- 33254466
- Full Text :
- https://doi.org/10.1016/j.biortech.2020.124243