Role of chemical concentration and second carbon sources in acclimation of microbial communities for biodegradation.

Applied and Environmental Microbiology
B A Wiggins, M Alexander

Abstract

A study was conducted to determine the role of concentration of the test chemical, of a second organic compound, and of mutation in the acclimation period before the mineralization of organic compounds in sewage. The acclimation period for the mineralization in sewage of 2 micrograms of 4-nitrophenol (PNP) per liter increased from 6 to 12 days in the presence of 10 mg of 2,4-dinitrophenol per liter. The extension of the acclimation period was equivalent to the time required for mineralization of 2,4-dinitrophenol. In contrast, the time for acclimation for the degradation of 2 micrograms of PNP per liter was reduced when 10 or 100 mg of phenol per liter was added. Lower phenol levels increased the acclimation period to 8 days. The length of the acclimation period for PNP mineralization decreased as the initial concentration of PNP increased from 2 micrograms to 100 mg/liter. The acclimation period for phenol mineralization was lengthened as the phenol concentration increased from 100 to 1,400 mg/liter. The length of the acclimation period for PNP and phenol biodegradation was reproducible, but it varied among replicates for the biodegradation of other nitro-substituted compounds added to sewage or lake water, suggesting that a m...Continue Reading

References

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Citations

Mar 18, 2003·Environmental Science and Pollution Research International·Anne KahruLee Põllumaa
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Dec 27, 2011·Water Environment Research : a Research Publication of the Water Environment Federation·Nayef Z Al-Mutairi
Nov 22, 2014·Environmental Science and Pollution Research International·Fei HuaYan Yang
May 4, 2014·Biotechnology, Biotechnological Equipment·Fei HuaYi Cun Zhao
Nov 27, 1999·Chemosphere·A Saupe
Aug 1, 1995·Applied and Environmental Microbiology·W S Steffensen, M Alexander
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Oct 1, 1990·Applied and Environmental Microbiology·M A HeitkampW J Adams
Jun 9, 2019·The Science of the Total Environment·Catherine A RolphFrancis Hassard

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