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Nitrite inhibition and intermediates effects on Anammox bacteria: A batch-scale experimental study ☆

Paper ID Volume ID Publish Year Pages File Format Full-Text
35787 45106 2010 8 PDF Available
Title
Nitrite inhibition and intermediates effects on Anammox bacteria: A batch-scale experimental study ☆
Abstract

A batch test procedure, based on manometric measurements, was used to study the Anammox process, in particular the inhibition due to nitrite and the effects of hydroxylamine and hydrazine, indicated as possible intermediates of the process. The maximum nitrite removal rate (MNRR) was measured. The method showed good reliability with a standard error of 4.5 ± 3.3% (n: 41). All the tests were carried out on samples taken from a pilot plant with Anammox suspended biomass. The tests were used also to monitor the reactor activity. By testing different spiked additions of nitrite (10–75 mg NO2−-N L−1), a short-term inhibition, with more than 25% MNRR decrease, was found at concentrations higher than 60 mg NO2−-N L−1. Repeated additions of nitrite higher than 30 mg NO2−-N L−1 caused losses of activity. After a complete loss of activity, spiked additions of hydroxylamine (30 mg N L−1 in total) determined a 20% permanent recovery. Low amounts of the intermediates (1–3 mg N L−1) applied on partially inhibited samples and uninhibited samples produced temporary increases in activity up to 50% and 30%, respectively.

Keywords
Anammox; Inhibition; Intermediate compounds; Batch tests; Maximum activity; Manometric tests
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Nitrite inhibition and intermediates effects on Anammox bacteria: A batch-scale experimental study ☆
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 45, Issue 4, April 2010, Pages 573–580
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