Bio-Energy Generation from Synthetic Winery Wastewaters

Applied Sciences

FranciscoJesus Fernandez-Morales¹  JoseLuis Garcia-Morales²  Jacek Dach³  Stanislaw Marks³ 

[1] Chemical Engineering Department, Faculty of Chemical Sciences & Technologies, University of Castilla-La Mancha, Avenida Camilo José Cela, 12, 13071 Ciudad Real, Spain;Environmental Technologies Department, Institute of Viticulture and Agri-Food Research (IVAGRO), Faculty of Environmental and Marine Sciences, International Campus of Excellence (ceiA3), University of Cadiz, Puerto Real, 11510 Cádiz, Spain;Institute of Biosystems Engineering, Poznań University of Life Sciences, ul. Wojska Polskiego 50, 60-637 Poznań, Poland;

关键词: winery wastewaters;    acidogenic fermentation;    bio-hydrogen;   

DOI  :  10.3390/app10238360

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown