Production of biohythane from food waste via an integrated system of continuously stirred tank and anaerobic fixed bed reactors
| Autor: | Martha Minale Yeshanew, Luigi Frunzo, Giovanni Esposito, Francesco Pirozzi, Piet N.L. Lens |
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| Přispěvatelé: | Yeshanew, Martha M., Frunzo, Luigi, Pirozzi, Francesco, Lens, Piet N. L., Esposito, Giovanni |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Environmental Engineering
Hydraulic retention time 020209 energy CSTR Continuous stirred-tank reactor Two-stage Bioengineering 02 engineering and technology Garbage 010501 environmental sciences 01 natural sciences Continuous production Methane AFBR chemistry.chemical_compound Bioreactors Waste Management Anaerobic digestion 0202 electrical engineering electronic engineering information engineering Bioreactor Biohydrogen Anaerobiosis Biohythane production Food waste Effluent Waste Management and Disposal 0105 earth and related environmental sciences Bacteria Waste management Renewable Energy Sustainability and the Environment General Medicine chemistry Food Biofilms Biofuels Environmental science Hydrogen |
| Popis: | The continuous production of biohythane (mixture of biohydrogen and methane) from food waste using an integrated system of a continuously stirred tank reactor (CSTR) and anaerobic fixed bed reactor (AFBR) was carried out in this study. The system performance was evaluated for an operation period of 200 days, by stepwise shortening the hydraulic retention time (HRT). An increasing trend of biohydrogen in the CSTR and methane production rate in the AFBR was observed regardless of the HRT shortening. The highest biohydrogen yield in the CSTR and methane yield in the AFBR were 115.2 (±5.3) L H2/kgVSadded and 334.7 (±18.6) L CH4/kgCODadded, respectively. The AFBR presented a stable operation and excellent performance, indicated by the increased methane production rate at each shortened HRT. Besides, recirculation of the AFBR effluent to the CSTR was effective in providing alkalinity, maintaining the pH in optimal ranges (5.0–5.3) for the hydrogen producing bacteria. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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