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Toxicity identification and evaluation of nitrification inhibitors in wastewaters
KTH, Superseded Departments, Biotechnology.
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2000 (English)In: Environmental Toxicology, ISSN 1520-4081, E-ISSN 1522-7278, Vol. 15, no 5, 527-532 p.Article in journal (Refereed) Published
Abstract [en]

In order to reduce the content of nitrogen in treated wastewater, microbial processes conducting nitrification of nitrogenous compounds and denitrification to gaseous nitrogen are included in the sewage wastewater treatment process. A set of compounds has been found inhibitory to these microorganisms. A procedure is presented for identification of nitrification inhibitors in wastewaters. This includes fractionation of the wastewater sample and location of the inhibitory effect using a nitrification inhibition assay where pure cultures of Nitrobacter are used. A series of unsaturated fatty acids and two monoterpenes were found to constitute the inhibitory effect in a wastewater sample from a plant for drying wood-derived fuel.

Place, publisher, year, edition, pages
2000. Vol. 15, no 5, 527-532 p.
Keyword [en]
nitrification inhibition, Nitrobacter, fractionation, toxicity identification and evaluation, TIE, toxicity directed, wastewater, components
URN: urn:nbn:se:kth:diva-20176ISI: 000165446600024OAI: diva2:338869
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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