Diclofenac, carbamazepine and triclocarban biodegradation in agricultural soils and the microorganisms and metabolic pathways affected

The Science of the Total Environment
Jean-Rene ThelusmondAlison M Cupples

Abstract

The incomplete elimination of pharmaceuticals and personal care products (PPCPs) during wastewater treatment has resulted in their detection in the environment. PPCP biodegradation is a potential removal mechanism; however, the microorganisms and pathways involved in soils are generally unknown. Here, the biodegradation of diclofenac (DCF), carbamazepine (CBZ) and triclocarban (TCC) in four agricultural soils at concentrations typically detected in soils and biosolids (50 ng g-1) was examined. Rapid DCF removal (<7 days) was observed under aerobic conditions, but only limited biodegradation was noted under other redox conditions. CBZ and TCC degradation under aerobic conditions was slow (half-lives of 128-241 days and 165-190 days for CBZ and TCC). Phylotypes in the Proteobacteria, Gemmatimonadales and Actinobacteria were significantly more abundant during DCF biodegradation compared to the controls (no DCF). For CBZ, those in the Bacteroidetes, Actinobacteria, Proteobacteria and Verrucomicrobia were enriched compared to the controls. Actinobacteria and Proteobacteria were also enriched during TCC biodegradation. Such differences could indicate these microorganisms are associated with the biodegradation of these compounds, as t...Continue Reading

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Citations

Aug 20, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Daniel D SnowJonathan Brett Sallach
Jun 6, 2020·Xenobiotica; the Fate of Foreign Compounds in Biological Systems·Suramya WaidyanathaTimothy R Fennell
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Sep 2, 2018·Environmental Science and Pollution Research International·Carlos LodeiroJavier Fernández Lodeiro
Aug 16, 2019·The Science of the Total Environment·Shuntao ChenJun Shan
Jul 12, 2020·The Science of the Total Environment·Ana Rita FerreiraNazaré Couto
Mar 8, 2021·The Science of the Total Environment·Jessica R DeereTiffany M Wolf
Mar 20, 2021·The Science of the Total Environment·Jesús Daniel Cardoso-VeraLeobardo Manuel Gómez-Oliván
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Jun 13, 2021·Environmental Science and Pollution Research International·Sara GallegoFabrice Martin-Laurent
Aug 17, 2021·Journal of Hazardous Materials·Pengqiang DuYongquan Zheng

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