Hydrogen production via dark fermentation by bacteria colonies on porous PDMS-scaffolds |
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| Affiliation: | 1. Institute for Materials Science and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 45141, Essen, Germany;2. Urban Water and Waste Management Department, Faculty of Engineering, University of Duisburg-Essen, Essen, Germany;1. Research Center for Combustion and Environment Technology, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240, China;2. School of Electrical and Energy Power Engineering, Yangzhou University, Yangzhou, 225002, China;3. Biofuels Institute, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China;1. Department of Physics, University School of Sciences, Gujarat University, Ahmedabad, 380 009, India;2. Computational Materials and Nanoscience Group, Department of Physics and Electronics, St. Xavier''s College, Ahmedabad, 380 009, India;3. Institute of Electronic Structure and Laser, FORTH, PO Box 1527, 71110 Heraklio, Crete, Greece;4. Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY 40292, USA;1. School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo, 255000, China;2. State Key Laboratory of Engines, Tianjin University, Tianjin, 3000072, China;1. Institute of Modern Physics, Fudan University, Shanghai, 200433, China;2. Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang, 621900, China;1. School of Materials Science and Engineering, Institute of New Energy Material Chemistry, Nankai University, Tianjin, 300350, PR China;2. College of Electronics Information and Optical Engineering, Nankai University, Tianjin, 300350, PR China;3. Computational Science Research Center, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea |
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| Abstract: | The development of biofuels and the question of finding renewable energy sources are important issues nowadays, due to the increasing shortage of other supplies. Hydrogen has gained very much attention as biofuel, as it is highly energetic and a clean energy source. A very interesting method to produce hydrogen is dark fermentation. It generates a clean energy from organic wastes with low value and at low energy requirements. The production of hydrogen and bio-hydrogen from waste and wastewaters can have a positive environmental impact in terms of creation of highly effective energy fuel and reduction of waste. Due to their nutrients, organic waste and wastewaters are suitable substrates to obtain bio-hydrogen. In this paper we investigate the behaviour and the stability of porous scaffolds containing iron oxide particles in a dark fermentation environment and explore the possibility of hosting mixed cultures of clostridia on them, aiming to an increase in hydrogen production. We address the effect of embedding hematite particles (in different concentrations) in the scaffolds, to see whether there is an increase in bio-hydrogen-production. This latter can be enhanced, if particles of various metal oxides are present, as they can increase bacterial growth and encourage the bioactivity of species that produce hydrogen. The scaffolds analysed consist of polydimethylsiloxane (PDMS) containing Fe2O3 particles and were produced via the sugar template method. X-ray diffraction patterns, SEM images as well as dark fermentation tests in batch procedure are presented and discussed. Bacteria colonies could be detected after long treatment in municipal wastewater and production of biohydrogen was ascertained for all samples investigated. |
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| Keywords: | Wastewater treatment Dark fermentation Hydrogen production Polydimethylsiloxane (PDMS) |
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