Journal ArticleDOI
Limitations of thermophilic anaerobic wastewater treatment and the consequences for process design.
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TLDR
In this article, the process stability of thermophilic anaerobic wastewater treatment systems is investigated and a relatively low sensitivity to temperature changes if high-rate reactors with immobilized biomass are used.Abstract:
Thermophilic anaerobic digestion offers an attractive alternative for the treatment of medium- and high-strength wastewaters. However, literature reports reveal that thermophilic wastewater treatment systems are often more sensitive to environmental changes than the well-defined high-rate reactors at the mesophilic temperature range. Also, in many cases a poorer effluent quality is experienced while the carry over of suspended solids in the effluent is relatively high. In this paper recent achievements are discussed regarding the process stability of thermophilic anaerobic wastewater treatment systems. Laboratory experiments reveal a relatively low sensitivity to temperature changes if high-rate reactors with immobilized biomass are used. Other results show that if a staged process is applied, thermophilic reactors can be operated for prolonged periods of time under extreme loading conditions (80-100 kg chemical oxygen demand.m-3.day-1), while the concentrations of volatile fatty acids in the effluent remain at a low level.read more
Citations
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Interaction in the oral proficiency interview
TL;DR: The authors report on the findings of a discourse analysis study whose purpose was to provide answers to the following research question: What kind of speech event is the OPI? Is it more like an everyday, friendly conversation, an interview, or something else?
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Isolation of a Novel Thermophilic, Syntrophic Propionate-Oxidizing Bacterium from Thermophilic Methanogenic Granular Sludge: Its Physiology and Spatial Distribution in Sludge Granules.
TL;DR: Results indicate that strain SI may be responsible for propionate oxidation in situ as one of the significant populations in sludge granules.
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Research letterMethanogenesis from acetate: Physiology of a thermophilic, acetate-utilizing methanogenic bacterium
TL;DR: In this paper, a thermophilic acetate-decarboxylating methanogenic bacterium was grown with acetate as sole energy and carbon source, and the organism had an optimal pH range of 7.3-7.5 and a temperature optimum near 60°C; no growth occurred above 75°C.
References
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Book
Perry's Chemical Engineers' Handbook
TL;DR: In this paper, conversion factors and mathematical symbols are used to describe conversion factors in physical and chemical data and Mathematical Symbols are used for converting, converting, and utilising conversion factors.
Book
Chemical Engineering Kinetics
TL;DR: In this paper, chemical engineering kinetics was studied in terms of kinetics in the context of Chemical Engineering kinetics and its application in the field of chemical engineering. But they did not discuss the application of the kinetics of protein kinetics.
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Kinetics of anaerobic treatment: A critical review
TL;DR: The fundamentals of microbial kinetics and continuous culture models are presented and the effect of temperature and inhibitors on the intrinsic kinetic rates is discussed, and Stoichiometric and bioenergetic considerations are reviewed.
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Characterization of an acetate-decarboxylating, non-hydrogen-oxidizing methane bacterium.
TL;DR: A methanogenic bacterium, commonly seen in digested sludge and referred to as the “fat rod” or Methanobacterium soehngenii, has been enriched to a monoculture and is characterized.
Journal ArticleDOI
Anaerobic thermophilic digestion of manure at different ammonia loads: Effect of temperature
TL;DR: In this paper, the effect of temperature in the range of 40-64°C on thermophilic anaerobic digestion of cattle manure with two different ammonia concentrations (2.5 and 6.0 g-N/l) was investigated in continuouslyfed lab-scale reactors: the higher ammonia concentration reduced the maximum tolerable temperature.