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Enhanced anammox consortium activity for nitrogen removal: Impacts of static magnetic field

Paper ID Volume ID Publish Year Pages File Format Full-Text
24734 43533 2008 7 PDF Available
Title
Enhanced anammox consortium activity for nitrogen removal: Impacts of static magnetic field
Abstract

Anaerobic ammonium oxidation (anammox) process has been becoming a promising technology for the removal of nitrogenous contaminants from wastewater. In short-term batch tests, we observed the anaerobic ammonium oxidizing activity of anammox consortium increased as the magnetic field varied in the range of 16.8–95.0 mT. A maximum 50% increase was obtained at the value of 75.0 mT. In order to study long-term effect of magnetic field on anammox consortium, an anammox reactor with magnetic field of 60.0 mT was operated in laboratory-scale. The results demonstrated that a significant 30% increase in maximum nitrogen removal rate and an approximate 1/4 saving in cultivation time were achieved by using the magnetic system. Microbiological composition analysis showed that bacterial diversity in the reactor decreased under magnetic-exposed condition. Nevertheless, some strains belonging to Planctomycetales were highly enriched. These findings indicated that the magnetic field was useful and reliable for fast start-up of anammox process since it was proved as a simple and convenient approach to enhance anaerobic ammonium oxidizing activity.

Keywords
Anammox; Magnetic field; Anaerobic ammonium oxidizing activity; Microbiological composition; Planctomycetales; Nitrogen removal rate
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 138, Issues 3–4, 25 November 2008, Pages 96–102
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