Logo
 

Abertay Research Collections >
School of Science, Engineering & Technology >
Science Engineering & Technology Collection >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10373/655

View Statistics
Title: Nitrate and nitrite reductions with anaerobic sludge using various carbon sources: glucose, glycerol, acetic acid, lactic acid and methanol
Authors: Akunna, Joseph C.
Bizeau, C.
Moletta, R.
Affiliation: University of Abertay Dundee. School of Contemporary Sciences
Keywords: Anaerobic sludge
Denitrification
Ammonium production (ammonification)
Nitrate
Nitrite
Glucose
Glycerol
Acetic acid
Lactic acid
Methanol
Issue Date: Aug-1993
Publisher: Elsevier
Type: Journal Article
Refereed: peer-reviewed
Rights: Published version (c)Elsevier, available from http://dx.doi.org/10.1016/0043-1354(93)90217-6
Citation: Akunna, J.C., Bizeau, C. and Moletta, R. 1993. Nitrate and nitrite reductions with anaerobic sludge using various carbon sources: glucose, glycerol, acetic acid, lactic acid and methanol. Water Research. 27(8): pp.1303-1312. Available from: http://dx.doi.org/10.1016/0043-1354(93)90217-6
Abstract: Batch-tests were used to determine the potentials of digested sludge to reduce nitrate and nitrite in the presence of five different carbon sources: glucose, glycerol, acetic acid, lactic acid and methanol. Ammonium accumulation was found in glucose and glycerol media. Dissimilatory reduction to ammonium accounted for up to 50% of reduced nitrate and nitrite. The rest were denitrified. In the media containing these carbon substrates volatile fatty acids, particularly acetic acid, were produced and ammonification was higher than denitrification activities only when glucose and glycerol were still present in the media. Ammonium production was higher in nitrite cultures than in nitrate cultures. In the culture media with acetic and lactic acids and methanol, ammonium was not detected. Nitrate/nitrite reduction in acetic and lactic acids media was essentially denitrification activity. Up to 100% of reduced nitrate and nitrite in the culture media with these acids were denitrified at average rates between 27 and 23 mg N-NOx/g MLVSSh, nitrite reduction rate being about 14% lower than total nitrate reduction rate. COD requirements for nitrate and nitrite reductions were generally lower in cultures with acetic and lactic acids than in glucose and glycerol cultures. Methanol culture media showed a very small reduction rate for the N-NOx indicating the absence (or presence in very small quantity) of the bacteria capable of denitrifying with this substrate.
URI: http://hdl.handle.net/10373/655
ISSN: 0043-1354
Appears in Collections:Science Engineering & Technology Collection

Files in This Item:

There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback