Nitrite effectively inhibits sulfide and methane production in a laboratory scale sewer reactor

Janani Mohanakrishnan, Gutierrez, Oriol G., Meyer, R.L. and Yuan, Zhiguo (2008) Nitrite effectively inhibits sulfide and methane production in a laboratory scale sewer reactor. Water Research, 42 14: 3961-3971. doi:10.1016/j.watres.2008.07.001


Author Janani Mohanakrishnan
Gutierrez, Oriol G.
Meyer, R.L.
Yuan, Zhiguo
Title Nitrite effectively inhibits sulfide and methane production in a laboratory scale sewer reactor
Journal name Water Research   Check publisher's open access policy
ISSN 0043-1354
Publication date 2008-01-01
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.watres.2008.07.001
Open Access Status Not yet assessed
Volume 42
Issue 14
Start page 3961
End page 3971
Total pages 11
Place of publication Netherland
Publisher Elseiver
Language eng
Subject C1
9699 Other Environment
090409 Wastewater Treatment Processes
Abstract The production and emission of hydrogen sulfide and methane by anaerobic microoganisms in sewer systems is a well-documented problem. The effectiveness of nitrite in controlling sulfide and methane production was tested in a laboratory scale sewer reactor. Nitrite was continuously dosed in the reactor for 25 days at concentrations of 20-140 mg N/L. No sulfide and methane accumulation was observed in the reactor in the presence of nitrite. A significant reduction was observed in the sulfate reduction and methane production capabilities of the biofilm. Nitrite also stimulated biological sulfide oxidation within the biofilm. The nitrite uptake rate of the reactor increased over the nitrite dosing period and nitrous oxide production was observed within the biofilm. When nitrite addition was stopped, sulfate reduction and methane production gradually resumed, and reached pre-nitrite addition levels after 2.5 months. The slow recovery suggests that nitrite can be applied intermittently for sulfide and methane control, which represents a key advantage over similar chemicals such as nitrate and oxygen. The study demonstrates nitrite addition as a promising and effective strategy for the management of sulfide and methane in sewers. Further investigation and optimization are still required before application in the field. (C) 2008 Elsevier Ltd. All rights reserved.
Keyword Sulfate, sulfide, nitrite, methane, biofilm, sewer
Q-Index Code C1
Q-Index Status Confirmed Code
Grant ID LP454182
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
Advanced Water Management Centre Publications
 
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Created: Sat, 28 Mar 2009, 22:12:57 EST by Suzanne Read on behalf of Advanced Water Management Centre