Dark fermentative biohydrogen production by Acinetobacter junii-AH4 utilizing various industry wastewaters
| Autor: | Abhispa Bora, G.H. Dinesh, Ramalingam Karthik Raja, Ramu Satheesh Murugan, Arivalagan Pugazhendhi, Naina Mohammed Samsudeen, Ebenezer Samuel James Obeth, A. Arun |
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| Rok vydání: | 2021 |
| Předmět: |
biology
Renewable Energy Sustainability and the Environment Chemistry Energy Engineering and Power Technology Acinetobacter junii 02 engineering and technology Dark fermentation Acinetobacter 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics biology.organism_classification Pulp and paper industry 01 natural sciences 0104 chemical sciences Fuel Technology Wastewater Bioreactor Fermentation Biohydrogen 0210 nano-technology Sugar |
| Zdroj: | International Journal of Hydrogen Energy. 46:11297-11304 |
| ISSN: | 0360-3199 |
| Popis: | Hydrogen (H2) is one of the most promising renewable energy sources, anaerobic bacterial H2 fermentation is considered as one of the most environmentally sustainable alternatives to meet the potential fossil fuel demand. Bio-H2 is the cleanest and most effective source of energy provided by the dark fermentation utilizing organic substrates and different wastewaters. In this study, the bio-H2 production was achieved by using the bacteria Acinetobacter junii-AH4. Further, optimization was carried out at different pH (5.0–8.0) in the presence of wastewaters as substrates (Rice mill wastewater (RMWW), Food wastewater (FWW) and Sugar wastewater (SWW). In this way, the optimized experiments excelled with the maximum cumulative H2 production of 566.44 ± 3.5 mL/L (100% FWW at pH 7.5) in the presence of Acinetobacter junii-AH4. To achieve this, a bioreactor (3 L) was employed for the effective production of H2 and Acinetobacter junii-AH4 has shown the highest cumulative H2 of 613.2 ± 3.0 mL/L, HPR of 8.5 ± 0.4 mL/L/h, HY of 1.8 ± 0.09 mol H2/mol glucose. Altogether, the present study showed a COD removal efficiency of 79.9 ± 3.5% by utilizing 100% food wastewater at pH 7.5. The modeled data established a batch fermentation system for sustainable H2 production. This study has aided to achieve an ecofriendly approach using specific wastewaters for the production of bio-H2. |
| Databáze: | OpenAIRE |
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