Essays about: "syntrophic acetate oxidizing bacteria"
Showing result 1 - 5 of 6 essays containing the words syntrophic acetate oxidizing bacteria.
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1. 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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2. Stabilizing biogas processes at high ammonia : effects of acetate pulse-feeding on the microbial population
University essay from SLU/Department of Molecular SciencesAbstract : This study investigated the problem of ammonia inhibition in biogas reactors, commonly occurring when protein rich substrates are used in anaerobic digestion processes. Ammonia inhibition is one of the foremost causes of failure in anaerobic digestion, leading to process instability, with symptoms commonly expressed as; reduction in biogas produced, decreased methane content in the gas and accumulation of volatile fatty acids. READ MORE
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3. Investigating the methane producing pathway in lab-scale biogas reactors subjected to sequential increase of ammonium and daily acetate-pulsing
University essay from Linköpings universitet/Institutionen för fysik, kemi och biologiAbstract : Syntrophic acetate oxidizing bacteria convert acetate into hydrogen and carbon dioxide and through the mutualistic syntrophic partnership with methanogens the products are further converted to methane in biogas processes operating at high ammonia concentrations. There is very little known about SAOBs, only five have been characterized and had their genome analyzed. READ MORE
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4. Anaerobic degradation of volatile fatty acids in continuous biogas reactors at very short hydraulic retention times.
University essay from Lunds universitet/Teknisk mikrobiologi; Lunds universitet/BioteknikAbstract : There is an increasing demand for safe, affordable and above allsustainable energy, due to the exhaustion of fossil fuels and increasing greenhousegas emissions. In this context, anaerobic digestion is of growing interest, as it enablesthe production of the versatile renewable energy source biogas from various types oforganic wastes. READ MORE
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5. The effects of trace elements on the microbial communities of thermophilic biogas production
University essay from SLU/Dept. of MicrobiologyAbstract : The increasing need for alternatives to fossil fuels and traditional waste management systems can be simultaneously addressed by the production of biogas using organic waste as input material. The biogas produced can be used directly for energy production or upgraded to increase methane purity for use in the engines of motor vehicles. READ MORE
