scholarly journals Mutagenic activity associated with by-products of drinking water disinfection by chlorine, chlorine dioxide, ozone and UV-irradiation.

1982 ◽  
Vol 46 ◽  
pp. 197-205 ◽  
Author(s):  
B C Zoeteman ◽  
J Hrubec ◽  
E de Greef ◽  
H J Kool
Keyword(s):  
Drinking Water ◽  
Uv Irradiation ◽  
Chlorine Dioxide ◽  
Mutagenic Activity ◽  
Water Disinfection ◽  
Drinking Water Disinfection ◽  
By Products

Genotoxicity and effects of nanosilver contamination in drinking water disinfection

2012 ◽  
Vol 12 (6) ◽  
pp. 829-836 ◽  
Author(s):  
Slaven Dobrović ◽  
Hrvoje Juretić ◽  
Davor Ljubas ◽  
Ivana Vinković Vrček ◽  
Maja Zebić Avdičević ◽  
...  
Keyword(s):  
Drinking Water ◽  
Chlorine Dioxide ◽  
Water Samples ◽  
Water Disinfection ◽  
Water Supply Systems ◽  
Bromide Ion ◽  
Drinking Water Disinfection ◽  
Almost All ◽  
Ion Incorporation ◽  
By Products

This study was conducted to examine the genotoxicity and the influence of silver nanoparticles (AgNPs) contamination when drinking water is exposed to five different disinfection treatments: chlorine, chlorine dioxide, ozone, ozone/chlorine and ozone/chlorine dioxide. Experiments were conducted with water samples of different chemical composition, from three water supply systems in Croatia. AgNPs are of interest because of their use as an antimicrobial in numerous commercial products, and as a drinking water disinfection agent. To examine possible effects of AgNP contamination, the disinfection treatments were repeated with AgNPs in the water samples. AgNP contamination generally caused a decrease in the level of trihalomethanes by up to 59%. Influence of AgNPs on bromide ion incorporation into disinfection by-products (DBPs) was also examined. The most obvious example was the Osi water where ozonation step prior to chlorination increased the bromine incorporation factor from 0.156 to 0.339, while addition of AgNPs limited the increase to 0.249. Also, AgNP presence in almost all disinfection treatments increased dicarbonyl disinfection by-products. All treated waters were tested for genotoxicity using the comet assay and showed similar genotoxic potential. The results are preliminary, but could provide a basis for further studies evaluating the environmental impact of AgNPs in natural aquatic systems.

Application of Chlorine Dioxide in Drinking Water Disinfection

2012 ◽  
Vol 461 ◽  
pp. 497-500
Author(s):  
Deng Ling Jiang ◽  
Bo Wen Chen ◽  
Guo Wei Ni
Keyword(s):  
Drinking Water ◽  
Chlorine Dioxide ◽  
Production Cost ◽  
Tap Water ◽  
Water Disinfection ◽  
High Quality ◽  
Taste And Odor ◽  
Water Plant ◽  
Drinking Water Disinfection ◽  
By Products

Chlorine dioxide was applied to drinking water for reducing the quantity of organic pollutants such as chloroform and the taste and odor problems. A modified mode for operation in tap water plant was proposed following an investigation of the reaction mechanism by which ClO2 reacts with aquatic organic materials. By using such techniques, by-products such as chlorite and chlorate were effectively minimized and high quality drinking water was produced with reduced production cost of water treatment.

Identification of New Drinking Water Disinfection by-Products from Ozone, Chlorine Dioxide, Chloramine, and Chlorine

2000 ◽  
pp. 95-102 ◽  
Author(s):  
S. D. Richardson ◽  
A. D. Thruston ◽  
T. V. Caughran ◽  
P. H. Chen ◽  
T. W. Collette ◽  
...  
Keyword(s):  
Drinking Water ◽  
Chlorine Dioxide ◽  
Water Disinfection ◽  
Drinking Water Disinfection ◽  
By Products

IDENTIFICATION OF DRINKING WATER DISINFECTION BY-PRODUCTS FROM OZONE, CHLORINE DIOXIDE, CHLORAMINE, AND CHLORINE

1999 ◽  
pp. 46-53
Author(s):  
Susan D. Richardson ◽  
Tashia V. Caughran ◽  
Alfred D. Thruston ◽  
Timothy W. Collette ◽  
Kathleen M. Schenck ◽  
...  
Keyword(s):  
Drinking Water ◽  
Chlorine Dioxide ◽  
Water Disinfection ◽  
Drinking Water Disinfection ◽  
By Products

Mammalian cell cytotoxicity and genotoxicity analysis of drinking water disinfection by-products

2002 ◽  
Vol 40 (2) ◽  
pp. 134-142 ◽  
Author(s):  
Michael J. Plewa ◽  
Yahya Kargalioglu ◽  
Danielle Vankerk ◽  
Roger A. Minear ◽  
Elizabeth D. Wagner
Keyword(s):  
Drinking Water ◽  
Mammalian Cell ◽  
Water Disinfection ◽  
Cell Cytotoxicity ◽  
Drinking Water Disinfection ◽  
By Products

Detection of genotoxic effects of drinking water disinfection by-products using Vicia faba bioassay

2016 ◽  
Vol 24 (2) ◽  
pp. 1509-1517 ◽  
Author(s):  
Yu Hu ◽  
Li Tan ◽  
Shao-Hui Zhang ◽  
Yu-Ting Zuo ◽  
Xue Han ◽  
...  
Keyword(s):  
Drinking Water ◽  
Vicia Faba ◽  
Water Disinfection ◽  
Genotoxic Effects ◽  
Drinking Water Disinfection ◽  
By Products

Disinfection By-Products (DBPs) in Drinking Water from Eight Systems Using Chlorine Dioxide

2008 ◽  
Vol 43 (1) ◽  
pp. 11-22 ◽  
Author(s):  
Rocio Aranda Rodriguez ◽  
Boniface Koudjonou ◽  
Brian Jay ◽  
Guy L. LeBel ◽  
Frank M. Benoit
Keyword(s):  
Drinking Water ◽  
Chlorine Dioxide ◽  
Distribution System ◽  
Cold Water ◽  
Spatial Variations ◽  
Water Disinfection ◽  
Limited Information ◽  
Disinfection Process ◽  
The One ◽  
By Products

Abstract A study was initiated to determine the presence of organic disinfection by-products (DBPs) in drinking water treated with chlorine dioxide (ClO2). One potential advantage for the use of ClO2 as a disinfectant is the reduced formation of organic DBPs. Generally, water treated with ClO2 produces chlorite and chlorate ions, but there is limited information regarding the presence of halogenated organic DBPs. Eight systems that use chlorine dioxide as part of the water disinfection process were investigated. All systems in this study applied chlorine as a primary or secondary disinfectant in addition to ClO2. To evaluate seasonal and spatial variations, water samples were collected during cold water (February to March 2003) and warm water (July to August 2003) months at five sites for each system: raw water (R, before treatment), treated water (T, after treatment but before distribution), and three points along the same distribution line (D1, D2, D3). Sampling and analysis were conducted according to established protocols. A suite of 27 organic DBPs including haloacetic acids (HAA), trihalomethanes (THM), haloacetonitriles (HAN), haloketones, haloacetaldehydes (HA), chloropicrin, and cyanogen chloride were examined. In addition, the concentration of oxyhalides (chlorite and chlorate ions) and auxiliary parameters were also determined. Chlorite was found in treated (T) and distributed (Dx) waters. The chlorite ion levels decreased along the distribution system (T > D1 > D2 > D3). At T sites, the levels ranged from 10 to 870 µg/L (winter), and from 300 to 1,600 µg/L (summer). Chlorite was not found in treated or distributed water in the one system that used ozone. Chlorate ion levels ranged from 20 to 310 µg/L (winter), and 80 to 318 µg/L (summer). Chlorate levels remained relatively constant throughout the distribution system. THM and eight HAA (HAA8) accounted for approximately 85% of the total DBPs (wt/wt) analyzed, followed by total HA (up to 7%) and HAN (3%). THM in distributed water were found at concentrations between 1.8 and 30.6 µg/L (winter), and 3.3 and 93.6 µg/L (summer). For HAA8, the levels ranged from 13 to 52 µg/L (winter), and 16 to 111 µg/L (summer). Chloral hydrate ranged from 0.2 to 5.2 µg/L (winter), and 0.4 to 12.2 µg/L (summer). The temporal and spatial variations observed in previous studies were confirmed in the current study as well.

Sign in / Sign up

Export Citation Format

Share Document