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Please use this identifier to cite or link to this item: http://hdl.handle.net/10373/654

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Title: Nitrate reduction by anaerobic sludge using glucose at various nitrate concentrations: ammonification, denitrification and methanogenic activities
Authors: Akunna, Joseph C.
Bizeau, C.
Moletta, R.
Affiliation: University of Abertay Dundee. School of Contemporary Sciences
Keywords: Anaerobic sludge
Nitrate
Ammonia
Denitrification
Ammonification
Issue Date: Jan-1994
Publisher: Taylor & Francis
Type: Journal Article
Refereed: peer-reviewed
Rights: Published version (c)Taylor & Francis, available from http://dx.doi.org/10.1080/09593339409385402
Citation: Akunna, J.C., Bizeau, C. and Moletta, R. Nitrate reduction by anaerobic sludge using glucose at various nitrate concentrations: ammonification, denitrification and methanogenic activities. Environmental Technology. 15(1): pp.41-49. Available from http://dx.doi.org/10.1080/09593339409385402
Abstract: A synthetic wastewater containing glucose as the sole source of carbon was used to assay glucose-acclimatized anaerobic digester sludge in batch-tests for its potential to carry out ammonification (nitrate- -> ammonium), denitrification (nitrate —>nitrogen gas) and to continue anaerobic digestion processes at various nitrate loads. Nitrate—>ammonium reduction activity was found to increase with decrease in the initial nitrate load. This activity appeared to take place principally during the acidogenesis of the glucose. Nitrate/nitrite loss after the fermentation process was essentially through denitrification. The denitrification capacity of the anaerobic sludge used was very high. Up to 80% of added nitrate was denitrified. The presence of nitrate or nitrite enhanced the fermentation of glucose to acetic acid but inhibited the production of propionic acid and methane. This inhibition was not observed after the complete reduction of nitrate and nitrite.
URI: http://hdl.handle.net/10373/654
ISSN: 0959-3330
Appears in Collections:Science Engineering & Technology Collection

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