An integrated system development including PEM fuel cell/biogas purification during acidogenic biohydrogen production from dairy wastewater |
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| Affiliation: | 1. Yildiz Technical University, Department of Environmental Engineering, Istanbul, Turkey;2. Yildiz Technical University, Department of Metallurgical and Material Engineering, Istanbul, Turkey;1. Chemical and Environmental Bioprocess Engineering Group, Natural Resources Institute (IRENA), Universidad de León, Avda. de Portugal 41, Leon, 24009, Spain;2. Nanometric Techniques Unit, Scientific and Technical Centers of the University of Barcelona, Lluís Soléi Sabarís 1-3, E-08028, Barcelona, Spain;3. Department of Electrical Engineering and Automatic Systems, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain;1. Department of Environmental Engineering, Cukurova University, Adana, Turkey;2. Department of Environmental Engineering, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey;1. Yildiz Technical University, Department of Environmental Engineering, Istanbul, Turkey;2. Yildiz Technical University, Department of Metallurgical and Material Engineering, Istanbul, Turkey;3. Nanotechnology Research Center, Gebze Institute of Technology, Istanbul, Turkey;1. Department of Chemical Engineering, Faculty of Engineering, Srinakharinwirot University, Nakhon Nayok 26120, Thailand;2. Computational Process Engineering Research Unit, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand;3. School of Chemical Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand;1. Fluminense Federal University, Petroleum and Chemical Engineering Department, Rua Passos da Pátria, 156, Niterói 24210-240, Brazil;2. Fluminense Federal University, Post Graduate Program in Sustainable Management Systems, Rua Passos da Pátria, 156, Niterói 24210-240, Brazil |
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| Abstract: | Biohydrogen production from dairy wastewater with subsequent biogas purification by hollow fiber membrane module was investigated in this study. The purified and not purified (raw) biohydrogen were used as fuel in polymer electrolyte membrane (PEM) fuel cell. Furthermore, the effect of CO2 on the performance of PEM fuel cell was evaluated considering cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and polarization curves. The maximum H2 production rate was 0.015 mmol H2/mol glucose and the biohydrogen concentration in biogas was ranged 33%–60% (v/v). CO2/H2 selectivity decreased with increasing pressure and maximum selectivity was obtained as 4.4 at feed pressure of 1.5 bar. The electrochemical active surface (EASA) areas were decreased with increasing CO2 ratio. The maximum power densities were 0.2, 0.08 and 0.045 W cm?2 for 100%, 80% and 60% (v/v) H2, respectively. The results indicated that integrated PEM fuel cell/biogas purification system can be used as a potential clean energy sources during acidogenic biohydrogen production from dairy wastewater. |
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| Keywords: | Dairy wastewater Inoculum pretreatment Biohydrogen Biohydrogen purification PEM fuel cell |
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