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Greenhouse gases from sequential batch membrane bioreactors: A pilot plant case study

Paper ID Volume ID Publish Year Pages File Format Full-Text
2713 127 2016 9 PDF Available
Title
Greenhouse gases from sequential batch membrane bioreactors: A pilot plant case study
Abstract

•The N2O production in a Sequential Batch MBR under salinity variation was studied.•Salinity increase induced higher N2O emission from both anoxic and aerobic tanks;.•The decrease of autotrophic activity promoted higher N2O emissions.•High DO concentration in the anoxic tank suggested N2O increase via denitrification.

The paper reports the results of nitrous oxide (N2O) emissions from aerobic and anoxic tank of a Sequential Batch Membrane Bioreactor (SB-MBR) pilot plant. The influence of salinity variation on N2O emission was analyzed by gradually increasing the inlet salt concentration from 0 to 10 g NaCl L−1.The observed results showed that the N2O concentration of the gaseous samples was strongly influenced by the salt concentration. This result was likely related to a worsening of the nitrification activity due to the effect of salinity on autotrophic bacteria. Dissolved oxygen concentration and salinity were found to be the key factors affecting N2O concentration in the gaseous samples withdrawn from the anoxic tank. Despite the fact that the N2O concentration in the anoxic tank was higher than in the aerobic one, it was found that the aerobic tank emitted around 25 times more N2O than the anoxic one.

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Keywords
Global warming potential; Wastewater treatment; Environmental preservation; Membrane bioreactors; Sequencing batch reactor; Bioprocess monitoring
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Greenhouse gases from sequential batch membrane bioreactors: A pilot plant case study
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 112, 15 August 2016, Pages 114–122
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us