Fate of Triclosan in activated sludge treatment - bridging the missing gap

Kai Bester, Xijuan Chen, Karolina Furgal, Jeppe Lund Nielsen, Daviid Cecil

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

Resumé

Triclosan is a bactericide used in increasing shelflife of cosmetics, improving hygenics in sportswear as well as in toothpaste and in mouth wash. More than 350 tons Triclosan is annually produced in Europe, and most of it finally is emitted into wastewater at the end of its life cycle. Therefore, the fate of this compound in wastewater treatment is of high interest, especially as triclosan has detrimental effects on, e.g., micro-algae at very low concentrations. 

It has been demonstrated, that the elimination of triclosan is very effective in wastewater treatment with eliminination rates > 90%. However, a persistent transformation product (triclosan-methyl) is beeing formed in the activated sludge treatment process. In contrast to other studies, mass balances on wastewater treatment plants show that the fate of more than 50% of the incoming triclosan remains unknown.

In this study we will present data on which part of the treatment process (BOD removal, nitrogen removal, phosphorus removal, i.e., aerobic-, nitrate reducing- and anaerobic conditions) is the most relevant for the elimination of triclosan as well as the formation of triclosan-methyl. Kinetic data for the different steps and conditions are being presented. Also we investigated the fate of the unknown mass fraction of triclosan in reactor experiments. Some results from full scale treatment plants will be given as well as first indications on how to decrease emissions of triclosan and triclosan-methyl in current wastewater treatment processes.

OriginalsprogEngelsk
Publikationsdato2009
StatusUdgivet - 2009
BegivenhedSETAC 2009 - Göteborg, Sverige
Varighed: 31 maj 20094 jun. 2009

Konference

KonferenceSETAC 2009
LandSverige
ByGöteborg
Periode31/05/200904/06/2009

Citer dette

Bester, K., Chen, X., Furgal, K., Nielsen, J. L., & Cecil, D. (2009). Fate of Triclosan in activated sludge treatment - bridging the missing gap. Poster præsenteret på SETAC 2009, Göteborg, Sverige.
Bester, Kai ; Chen, Xijuan ; Furgal, Karolina ; Nielsen, Jeppe Lund ; Cecil, Daviid. / Fate of Triclosan in activated sludge treatment - bridging the missing gap. Poster præsenteret på SETAC 2009, Göteborg, Sverige.
@conference{d89b45d08cfe11de90ca000ea68e967b,
title = "Fate of Triclosan in activated sludge treatment - bridging the missing gap",
abstract = "Triclosan is a bactericide used in increasing shelflife of cosmetics, improving hygenics in sportswear as well as in toothpaste and in mouth wash. More than 350 tons Triclosan is annually produced in Europe, and most of it finally is emitted into wastewater at the end of its life cycle. Therefore, the fate of this compound in wastewater treatment is of high interest, especially as triclosan has detrimental effects on, e.g., micro-algae at very low concentrations.  It has been demonstrated, that the elimination of triclosan is very effective in wastewater treatment with eliminination rates > 90{\%}. However, a persistent transformation product (triclosan-methyl) is beeing formed in the activated sludge treatment process. In contrast to other studies, mass balances on wastewater treatment plants show that the fate of more than 50{\%} of the incoming triclosan remains unknown.In this study we will present data on which part of the treatment process (BOD removal, nitrogen removal, phosphorus removal, i.e., aerobic-, nitrate reducing- and anaerobic conditions) is the most relevant for the elimination of triclosan as well as the formation of triclosan-methyl. Kinetic data for the different steps and conditions are being presented. Also we investigated the fate of the unknown mass fraction of triclosan in reactor experiments. Some results from full scale treatment plants will be given as well as first indications on how to decrease emissions of triclosan and triclosan-methyl in current wastewater treatment processes.",
author = "Kai Bester and Xijuan Chen and Karolina Furgal and Nielsen, {Jeppe Lund} and Daviid Cecil",
year = "2009",
language = "English",
note = "null ; Conference date: 31-05-2009 Through 04-06-2009",

}

Bester, K, Chen, X, Furgal, K, Nielsen, JL & Cecil, D 2009, 'Fate of Triclosan in activated sludge treatment - bridging the missing gap' SETAC 2009, Göteborg, Sverige, 31/05/2009 - 04/06/2009, .

Fate of Triclosan in activated sludge treatment - bridging the missing gap. / Bester, Kai; Chen, Xijuan; Furgal, Karolina; Nielsen, Jeppe Lund; Cecil, Daviid.

2009. Poster præsenteret på SETAC 2009, Göteborg, Sverige.

Publikation: Konferencebidrag uden forlag/tidsskriftPosterForskning

TY - CONF

T1 - Fate of Triclosan in activated sludge treatment - bridging the missing gap

AU - Bester, Kai

AU - Chen, Xijuan

AU - Furgal, Karolina

AU - Nielsen, Jeppe Lund

AU - Cecil, Daviid

PY - 2009

Y1 - 2009

N2 - Triclosan is a bactericide used in increasing shelflife of cosmetics, improving hygenics in sportswear as well as in toothpaste and in mouth wash. More than 350 tons Triclosan is annually produced in Europe, and most of it finally is emitted into wastewater at the end of its life cycle. Therefore, the fate of this compound in wastewater treatment is of high interest, especially as triclosan has detrimental effects on, e.g., micro-algae at very low concentrations.  It has been demonstrated, that the elimination of triclosan is very effective in wastewater treatment with eliminination rates > 90%. However, a persistent transformation product (triclosan-methyl) is beeing formed in the activated sludge treatment process. In contrast to other studies, mass balances on wastewater treatment plants show that the fate of more than 50% of the incoming triclosan remains unknown.In this study we will present data on which part of the treatment process (BOD removal, nitrogen removal, phosphorus removal, i.e., aerobic-, nitrate reducing- and anaerobic conditions) is the most relevant for the elimination of triclosan as well as the formation of triclosan-methyl. Kinetic data for the different steps and conditions are being presented. Also we investigated the fate of the unknown mass fraction of triclosan in reactor experiments. Some results from full scale treatment plants will be given as well as first indications on how to decrease emissions of triclosan and triclosan-methyl in current wastewater treatment processes.

AB - Triclosan is a bactericide used in increasing shelflife of cosmetics, improving hygenics in sportswear as well as in toothpaste and in mouth wash. More than 350 tons Triclosan is annually produced in Europe, and most of it finally is emitted into wastewater at the end of its life cycle. Therefore, the fate of this compound in wastewater treatment is of high interest, especially as triclosan has detrimental effects on, e.g., micro-algae at very low concentrations.  It has been demonstrated, that the elimination of triclosan is very effective in wastewater treatment with eliminination rates > 90%. However, a persistent transformation product (triclosan-methyl) is beeing formed in the activated sludge treatment process. In contrast to other studies, mass balances on wastewater treatment plants show that the fate of more than 50% of the incoming triclosan remains unknown.In this study we will present data on which part of the treatment process (BOD removal, nitrogen removal, phosphorus removal, i.e., aerobic-, nitrate reducing- and anaerobic conditions) is the most relevant for the elimination of triclosan as well as the formation of triclosan-methyl. Kinetic data for the different steps and conditions are being presented. Also we investigated the fate of the unknown mass fraction of triclosan in reactor experiments. Some results from full scale treatment plants will be given as well as first indications on how to decrease emissions of triclosan and triclosan-methyl in current wastewater treatment processes.

M3 - Poster

ER -

Bester K, Chen X, Furgal K, Nielsen JL, Cecil D. Fate of Triclosan in activated sludge treatment - bridging the missing gap. 2009. Poster præsenteret på SETAC 2009, Göteborg, Sverige.