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Biodegradation of Triclosan and Formation of Methyl-Triclosan in Activated Sludge Under Aerobic Conditions

Biodegradation of Triclosan and Formation of Methyl-Triclosan in Activated Sludge Under Aerobic Conditions

Xijuan Chen, Jeppe Lund Nielsen, Karolina Furgal, Yaling Liu, Ihab Bishara Lolas, Kai Bester

Chemosphere. 2011 Jul;84(4):452-6.

PMID: 21507452

Abstract:

Triclosan is an antimicrobial agent which is widely used in household and personal care products. Widespread use of this compound has led to the elevated concentrations of triclosan in wastewater, wastewater treatment plants (WWTPs) and receiving waters. Removal of triclosan and formation of triclosan-methyl was investigated in activated sludge from a standard activated sludge WWTP equipped with enhanced biological phosphorus removal. The removal was found to occur mainly under aerobic conditions while under anoxic (nitrate reducing) and anaerobic conditions rather low removal rates were determined. In a laboratory-scale activated sludge reactor 75% of the triclosan was removed under aerobic conditions within 150 h, while no removal was observed under anaerobic or anoxic conditions. One percent of the triclosan was converted to triclosan-methyl under aerobic conditions, less under anoxic (nitrate reducing) and none under anaerobic conditions.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP4640011	Triclosan-methyl		4640-01-1	Price

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