Utilization of distillery wastewater for hydrogen production in one-stage and two-stage processes involving photofermentation
| Autor: | Darya N. Tekucheva, Tatyana V. Laurinavichene, Anatoly A. Tsygankov, Kestutis S. Laurinavichius |
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| Rok vydání: | 2017 |
| Předmět: |
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020209 energy Bioengineering 02 engineering and technology Rhodobacter sphaeroides Wastewater Applied Microbiology and Biotechnology Biochemistry Rhodobacter capsulatus 0502 economics and business 0202 electrical engineering electronic engineering information engineering Ethanol fuel 050207 economics Hydrogen production Chemistry 05 social sciences Chemical oxygen demand Dark fermentation Hydrogen-Ion Concentration Pulp and paper industry Photofermentation Fermentation Sewage treatment Biotechnology Hydrogen |
| Zdroj: | Enzyme and microbial technology. 110 |
| ISSN: | 1879-0909 |
| Popis: | In this study, distillery wastewater was treated by dark fermentation or photofermentation alone, and by sequential dark and photofermentation processes using anaerobic saccharolytic consortium and purple nonsulfur bacteria. Combination of dark and photofermentation resulted in the maximal H2 yield of 17.6 L/L of distillery waste with chemical oxygen demand 40 g/L. It is equivalent to 205 kJ/L distillery wastewater and corresponds to recovery of approximately 4–8% of energy consumed during ethanol production. Optimal performance of photofermentation was observed at 20% concentration of pre-fermented distillery waste. In photofermentation, the range of the suitable distillery waste concentrations was extended and the H2 yield was improved by choosing the tolerant strain of purple bacteria Rhodobacter sphaeroides B-3059. After two stages, organic acids and sugars were completely consumed that means wastewater treatment concomitant to H2 production. |
| Databáze: | OpenAIRE |
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