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Occurrence and Removal of Benzotriazoles and Ultraviolet Filters in a Municipal Wastewater Treatment Plant

Occurrence and Removal of Benzotriazoles and Ultraviolet Filters in a Municipal Wastewater Treatment Plant

You-Sheng Liu, Guang-Guo Ying, Ali Shareef, Rai S Kookana

Environ Pollut. 2012 Jun;165:225-32.

PMID: 22019204

Abstract:

We investigated the occurrence and removal of four benzotriazoles (BTs) (benzotriazole: BT; 5-methyl-benzotriazole: 5-TTri; 5-chloro-benzotriazole: CBT; 5,6-dimethyl-benzotriazole: XTri) and six UV filters (benzophenone-3: BP-3; 3-(4-methylbenzylidene)camphor: 4-MBC; octyl 4-methoxycinnamate: OMC; 2-(3-t-butyl-2-hydroxy-5-methylphenyl)-5-chloro benzotriazole: UV-326; 2-(2'-Hydroxy-5'-octylphenyl)-benzotriazole: UV-329; octocrylene: OC) in a full scale municipal wastewater treatment in South Australia. BT, 5-TTri and BP-3 were found as the dominant compounds detected in the wastewater samples with average concentrations up to 5706 ± 928 ng/L, 6758 ± 1438 ng/L and 2086 ± 1027 ng/L in influent, and up to 2439 ± 233 ng/L, 610 ± 237 ng/L and 153 ± 121 ng/L in effluent, respectively. In the biosolid, 4-MBC and OC were found with the highest concentrations of 962 ± 135 ng/g and 465 ± 65 ng/g, respectively. Sorption onto sludge played a dominant role in the removal for UV filters, especially for 4-MBC, UV-326 and OC, which accounted for 54%-92% of influent loads, while biological degradation played a significant role for the other compounds.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP1793071381	2-Ethyl-d5-hexyl-2,3,3,4,4,5,5,6,6,6-d10 4-methoxycinnamate		1793071-38-1	Price
AS24901	Octocrylene-(2-ethyl-d5-hexyl-2,3,3,4,4,5,5,6,6,6-d10)			Price

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