Food Industry Waste’s Exploitation via Anaerobic Digestion and Fermentative Hydrogen Production in an Up-Flow Column Reactor
Autor: | Gerasimos Lyberatos, Maria Alexandropoulou, Georgia Antonopoulou |
---|---|
Rok vydání: | 2016 |
Předmět: |
Environmental Engineering
Waste management Hydrogen Food industry Hydraulic retention time Renewable Energy Sustainability and the Environment business.industry 020209 energy Extraction (chemistry) chemistry.chemical_element 02 engineering and technology 010501 environmental sciences Pulp and paper industry 01 natural sciences Methane Anaerobic digestion chemistry.chemical_compound chemistry Biofuel Fermentative hydrogen production 0202 electrical engineering electronic engineering information engineering business Waste Management and Disposal 0105 earth and related environmental sciences |
Zdroj: | Waste and Biomass Valorization. 7:711-723 |
ISSN: | 1877-265X 1877-2641 |
Popis: | The present study focuses on the exploitation of food industry waste for hydrogen and methane production, via biological processes. Fermentative hydrogen production in an anaerobic up-flow column reactor (AUFCR), using indigenous microbial species and fed with the soluble fraction of the waste coming after an extraction procedure, was investigated at different Hydraulic Retention Times (HRTs) in the range of 12–2 h. The highest hydrogen production rate (2.94 ± 0.37 L H2/L/d) was obtained at the HRT of 2 h, while the highest yield of hydrogen produced per mol of consumed carbohydrates, expressed in glucose equivalents was achieved at the HRT of 12 h (0.14 ± 0.01 mol/mol). Methane production via anaerobic digestion (AD) in a CSTR—type reactor was also assessed, using the whole diluted food industry waste (without extraction). The HRTs tested were 20, 15 and 10 days, while when the reactor operated at the HRT of 10 days, the feeding medium was also thermally treated, in order to assess the effect of pretreatment in AD. The maximum methane production rate (0.24 ± 0.02 L CH4/L/d) was observed for the HRT of 10 days and thermally treated substrate, while the maximum methane yield was obtained at the HRT of 15 days (247.9 ± 0.15 L CH4/kg waste). The IWA ADM1 model was finally used to predict the anaerobic digesters’ behavior through the operational period, resulting to a quite satisfactory simulation for a wide range of operational conditions. |
Databáze: | OpenAIRE |
Externí odkaz: |