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Showing result 1 - 5 of 31 essays matching the above criteria.
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1. Using biological conversion to increase the value of short-chain fatty acids by mixed cultures
University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomiAbstract : The development of anaerobic digestion processes has gained recognition for its potential for producing volatile fatty acids alongside bio-alcohols. In addition, the fermentation process and the products produced from biological fermentation have the possibility to overcome the abundance of organic waste in our society, which is potentially immensely rich in untapped valuable potential products. READ MORE
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2. Isolation of an ammonia-tolerant syntrophic butyrate-oxidizing bacterium originating from a thermophilic biogas digester
University essay from Uppsala universitet/Institutionen för biologisk grundutbildningAbstract : Syntrophic relationships between fatty acid degrading bacteria and hydrogenotrophic methanogens are important for a well-functioning anaerobic degradation process during biogas production from organic waste material. This is particularly important in biogas processes fed protein-rich material as their degradation gives rise to high levels of ammonia, which inhibits many microorganisms. READ MORE
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3. High-loaded thermophilic anaerobic digestion of mixed sewage sludge : A pilot study
University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)Abstract : Municipal wastewater treatment plants (WWTP) are important infrastructural components in a society and also important for sustainability. In a WWTP the most common treatment configuration is mechanical, biological, and chemical treatment of the wastewater. READ MORE
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4. Potential of waste-derived VFAs-bearing effluents as an external carbon source for MBBR denitrification of domestic wastewater
University essay from Högskolan i Borås/Akademin för textil, teknik och ekonomiAbstract : In conventional wastewater treatment plants, methanol, ethanol, and acetate are used as carbon source for the denitrification process in the biological nutrient removal. However, growing concern regarding economical costs and carbon footprints from the fossil-based production of these chemicals have forced the companies to look for other alternatives. READ MORE
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5. Methane mitigating feed additives in future dairy production : consumer and producer attitudes and potential effects on dairy products
University essay from SLU/Department of Molecular SciencesAbstract : Enteric methane emitted from ruminant metabolism is the most prominent greenhouse gas produced in livestock production. Mitigation strategies in the form of different types of methane reducing feed additives are approaching the market in near future. The effects of implementing the feed additives into the dairy sector was evaluated in this study. READ MORE