Enhancing denitrification using a carbon supplement generated from the wet oxidation of waste activated sludge

Strong, P. J., McDonald, B. and Gapes, D. J. (2011) Enhancing denitrification using a carbon supplement generated from the wet oxidation of waste activated sludge. Bioresource Technology, 102 9: 5533-5540. doi:10.1016/j.biortech.2010.12.025


Author Strong, P. J.
McDonald, B.
Gapes, D. J.
Title Enhancing denitrification using a carbon supplement generated from the wet oxidation of waste activated sludge
Journal name Bioresource Technology   Check publisher's open access policy
ISSN 0960-8524
1873-2976
Publication date 2011
Sub-type Article (original research)
DOI 10.1016/j.biortech.2010.12.025
Open Access Status
Volume 102
Issue 9
Start page 5533
End page 5540
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Language eng
Abstract This study compared the effect of four pure carbon supplements on biological denitrification to a liquor derived as a by-product from the wet oxidation (WO) of waste activated sludge. Sequencing batch reactors were used to acclimate sludge biomass, which was used in batch assays. Acetate, WO liquor and ethanol-supplementation generated the fastest denitrification rates. Acetate and WO liquor were efficiently utilised by all acclimated biomass types, while poor rates were achieved with methanol and formate. When comparing an inoculum from an ethanol-supplemented and non-supplemented wastewater treatment plant (WWTP), the ethanol-acclimated sludge obtained superior denitrification rates when supplemented with ethanol. Similarly high nitrate removal rates were achieved with both sludge types with acetate and WO liquor supplementation, indicating that WO liquors could achieve excellent rates of nitrate removal. The performance of the WO liquor was attributed to the variety of organic carbon substrates (particularly acetic acid) present within the liquor.
Keyword Biomass
Biosolids
By-product recovery
Nitrate
Sludge
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 25 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 31 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Mon, 19 May 2014, 11:35:24 EST by System User on behalf of School of Civil Engineering