Title
Formation and removal of genotoxic activity during UV/H2O2-GAC treatment of drinking water
Author
Heringa, M.B.
Harmsen, D.J.H.
Beerendonk, E.F.
Reus, A.A.
Krul, C.A.M.
Metz, D.H.
Ijpelaar, G.F.
TNO Kwaliteit van Leven
Publication year
2011
Abstract
The objective of this study was to determine the genotoxic activity of water after UV/H2O2 oxidation and GAC filtration. Pre-treated surface water from three locations was treated with UV/H2O2 with medium pressure (MP) lamps and passed through granulated activated carbon (GAC). Samples taken before and after each treatment step were extracted and concentrated by solid phase extraction (SPE) and analyzed for genotoxicity using the Comet assay with HepG2 cells and the Ames II assay. The Comet assay showed no genotoxic response in any of the samples. In the Ames II, no genotoxic response was obtained with the TAMix (a mix of six strains), but the TA98 strain showed an increase in genotoxic activity after MP-UV/H2O2 for all three locations. GAC post treatment effectively reduced the activities to control levels at two of the three locations and to below the level of the pre-treated water at one site. The results indicate that UV/H2O2 treatment may lead to the formation of genotoxic by-products, which can be removed by subsequent GAC filtration. © 2010 Elsevier Ltd.
Subject
Life
MSB - Microbiology and Systems Biology
EELS - Earth, Environmental and Life Sciences
Nutrition
Biomedical Research
AOP
Drinking water
Genotoxicity
Oxidation
Photolysis
UV
To reference this document use:
http://resolver.tudelft.nl/uuid:87a056e0-7fef-4977-b86b-de1efea1bb19
DOI
https://doi.org/10.1016/j.watres.2010.08.008
TNO identifier
425670
ISSN
0043-1354
Source
Water Research, 45 (1), 366-374
Document type
article