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Effects of total ammonia on anaerobic digestion and an example of digestor performance from cattle manure-protein mixtures
AbstractAnaerobic digestion of dairy cattle manure slurries was performed at different total ammonia concentrations, . Digestor performances, i.e. daily methane yields, volatile acid concentrations, pH and relative rates of utilization of acetate, propionate and glucose were monitored. Rates of utilization were determined prior to, during initial time periods following a change in total ammonia concentration and after acclimation had occurred. Digestor performances indicated inhibition occurred, followed by return to steady-state performance. Relative rates of acetate utilization were most affected by changes in total ammonia concentrations. Thus, we concluded that methanogenic metabolism was primarily inhibited by a high concentration of total ammonia. Anaerobic digestion of manure-bovine serum albumin as an example of manure containing high concentrations of proteinaceous material was also performed at three different added protein concentrations. Digestor instability was proportional to protein concentration.
Effects of total ammonia on anaerobic digestion and an example of digestor performance from cattle manure-protein mixtures
AbstractAnaerobic digestion of dairy cattle manure slurries was performed at different total ammonia concentrations, . Digestor performances, i.e. daily methane yields, volatile acid concentrations, pH and relative rates of utilization of acetate, propionate and glucose were monitored. Rates of utilization were determined prior to, during initial time periods following a change in total ammonia concentration and after acclimation had occurred. Digestor performances indicated inhibition occurred, followed by return to steady-state performance. Relative rates of acetate utilization were most affected by changes in total ammonia concentrations. Thus, we concluded that methanogenic metabolism was primarily inhibited by a high concentration of total ammonia. Anaerobic digestion of manure-bovine serum albumin as an example of manure containing high concentrations of proteinaceous material was also performed at three different added protein concentrations. Digestor instability was proportional to protein concentration.
Effects of total ammonia on anaerobic digestion and an example of digestor performance from cattle manure-protein mixtures
Robbins, J.E. (Autor:in) / Gerhardt, S.A. (Autor:in) / Kappel, T.J. (Autor:in)
Biological Wastes ; 27 ; 1-14
15.03.1988
14 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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