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- Title
Bio-Energy Generation from Synthetic Winery Wastewaters.
- Authors
Marks, Stanislaw; Dach, Jacek; Garcia-Morales, Jose Luis; Fernandez-Morales, Francisco Jesus
- Abstract
Featured Application: Acidogenic fermentation of winery wastes can represent an interesting option for the energetic valorization of these highly polluted wastewaters. In Spain, the winery industry exerts a great influence on the national economy. Proportional to the scale of production, a significant volume of waste is generated, estimated at 2 million tons per year. In this work, a laboratory-scale reactor was used to study the feasibility of the energetic valorization of winery effluents into hydrogen by means of dark fermentation and its subsequent conversion into electrical energy using fuel cells. First, winery wastewater was characterized, identifying and determining the concentration of the main organic substrates contained within it. To achieve this, a synthetic winery effluent was prepared according to the composition of the winery wastewater studied. This effluent was fermented anaerobically at 26 °C and pH = 5.0 to produce hydrogen. The acidogenic fermentation generated a gas effluent composed of CO2 and H2, with the percentage of hydrogen being about 55% and the hydrogen yield being about 1.5 L of hydrogen at standard conditions per liter of wastewater fermented. A gas effluent with the same composition was fed into a fuel cell and the electrical current generated was monitored, obtaining a power generation of 1 W·h L−1 of winery wastewater. These results indicate that it is feasible to transform winery wastewater into electricity by means of acidogenic fermentation and the subsequent oxidation of the bio-hydrogen generated in a fuel cell.
- Subjects
SPAIN; INDUSTRIAL wastes; ENERGY consumption; WINERIES; ENERGY conversion; FUEL cells
- Publication
Applied Sciences (2076-3417), 2020, Vol 10, Issue 23, p8360
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app10238360