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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 1222 for “"Digestion"”.
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Improvement of the digestion of cattle slurry via the process of co-digestion
… in detail by running several long term digestion trials under different operational conditions in laboratory scale semi-continuous digesters. These conditions included varying the organic loading rate (OLR) from 2 to 6 g VS l-1 d-1, the proportion of cattle slurry from 25 to 100%, and …
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Advanced aerobic digestion to optimize pathogen reduction: Staged pre-treatment in aerobic digestion
… for smaller communities that utilize aerobic digestion. However, traditional aerobic digestion produces Class B biosolids at best which raises public concern regarding the fate of pathogens following land application. The main goal of this work was to determine a plan to help an aerobic …
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Intake, digestion site, extent of digestion and digesta kinetics in grazing lactating cows
… turnover, intake and site and extent of nutrient digestion in grazing lactating cows. Four dual cannulated (rumen and proximal duodenum) cows were randomly assigned to two groups to graze permanent pasture with no supplement or with 6.4 kg/d corn-mineral mix in a switchback design with three …
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Anaerobic digestion of catering wastes
… associated<br/>with long term semi-continuous digestion of food waste as a sole substrate, and the role of<br/>trace elements and biomass retention in digestion of food wastes.<br/><br/>Source segregated food wastes were collected from a university catering facility and found,<br/>in …
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The microwave digestion of solids
… has been demonstrated by the use of microwave digestion, and successful digestions have been achieved in 10% of the time required for traditional methods. The first digestions using microwave heating were performed in open vessels. However many problems were identified.
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Developments in anaerobic digestion modelling
Anaerobic digestion (AD) is notorious for being susceptible to failure and is regarded as unstable and sensitive. Thus, to avoid failure, anaerobic digesters are frequently operated far below their optimal level. In order to run a digester closer to capacity, a better understanding of AD failure is …
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Anaerobic Digestion: Factors Effecting Odor Generation
… of the study looked at the effects of advanced digestion processes on odor generation. Digested sludge from acid/gas and temperature phased anaerobic digestion systems were analyzed in the lab. The results show that both acid/gas system and temperature phased digestion had a positive impact on …
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Anaerobic Digestion of Separated Cattle Slurry
… size did not significantly influence the digestion process. <br/><br/>Shock treatments were performed by lowering the temperature of digesters operated at a 1O and 25 day RT on SCS from 35oC to 3-6oC over several days, and employing different recovery strategies. Measurement of gas …
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Aerobic digestion of trickling filter humus
… of this investigation was to study the aerobic digestion of trickling filter humus and the relationship between digestion and the subsequent filterability of the sludge. Five individual, ten liter, batch-type digestion studies were conducted at 20°C for detention periods ranging from 22 to 38 …
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The effects of aerobic digestion on centrifugation
… to study the effects of activated sludge aerobic digestion on the subsequent performance of a centrifuge. Two runs, utilizing two, 55 gallon barrels as digesters per run, were conducted using detention periods of 15 and 14 days, for run #1 and #2, respectively. Besides centrifugation, various …
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Digestion anaerobia de solidos en alta concentración
La problemática que plantean los residuos sólidos urbanos (RSU) como consecuencia de su incremento y las implicaciones sobrela contaminación ambiental y el agotamiento de los recursos naturales, hace esencial la búsqueda de caminos para su gestión correcta desde el punto de vista ambiental y …
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Toward Simple Generic Control in Anaerobic Digestion
… the buffering capacity of the anaerobic digestion system and which has the potential for helping to maintain a stable system in the face of changing organic and toxic load. This is particularly the case when used in association with other informative on-line parameters such as gas …
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In vitro enzymatic digestion of milk proteins
Thesis (M.S.)--Michigan State University. Dept. of Food Science, 1975
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Impact of metallic nanoparticles on anaerobic digestion
… wastewater treatment. In batch anaerobic digestion systems, AgNPs at the concentration of 40 mg/L did not inhibit methane production, as more than 90% of AgNPs were removed from the liquid to the associated sludge while almost no silver ions were released from AgNPs under anaerobic sludge …
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Optimisation of small scale anaerobic digestion technology
The recent advances in anaerobic digestion (AD) technology and changes in government policies have contributed to the gradual increase in the establishment of on-site smallscale anaerobic digesters in developed regions, particularly in Europe. However, these advances have not completely eradicated …
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Biological nutrients and growth in anaerobic digestion
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Sanitary Engineering, 1961.
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Kinetic modeling and experimentation of anaerobic digestion
… biogas or electricity). An added benefit to bio-digestion is a leftover high-grade organic fertilizer. Models of the anaerobic digestion process do exist, but either rely on simple algebraic equations instead of biochemical reactions, or consider so many external parameters that they become …
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