PMID- 23906778 OWN - NLM STAT- MEDLINE DCOM- 20140411 LR - 20130923 IS - 1879-2448 (Electronic) IS - 0043-1354 (Linking) VI - 47 IP - 15 DP - 2013 Oct 1 TI - Formation of disinfection by-products after pre-oxidation with chlorine dioxide or ferrate. PG - 5856-64 LID - S0043-1354(13)00571-X [pii] LID - 10.1016/j.watres.2013.07.010 [doi] AB - The effect of pre-oxidation with chlorine dioxide (ClO2) or ferrate (Fe(VI)) on the formation of disinfection by-products (DBPs) during chlorination or chloramination was tested with natural waters from 12 sources (9 surface waters, 1 groundwater, and 2 wastewater effluents). DBPs investigated included trihalomethanes (THM), chloral hydrate (CH), haloketones (HK), haloacetonitriles (HAN) and trichloronitromethane (TCNM), chlorite and chlorate. Chlorite and chlorate were found in the ClO2-treated waters. Application of 1 mg/L ClO2 ahead of chlorination reduced the formation potential for THM by up to 45% and the formation of HK, HAN and TCNM in most of the samples. The CH formation results were mixed. The formation of CH and HK was enhanced with low doses of Fe(VI) (1 mg/L as Fe), but was greatly reduced at higher doses (20 mg/L Fe). Fe(VI) reduced the formation of THM, HAN and TCNM in most of the samples. Reduced potential for the formation of NDMA was observed in most of the samples after both ClO2 and Fe(VI) pre-oxidation. CI - Copyright (c) 2013 Elsevier Ltd. All rights reserved. FAU - Yang, Xin AU - Yang X AD - SYSU-HKUST Research Center for Innovative Environmental Technology (SHRCIET) School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510275, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, China. Electronic address: yangx36@mail.sysu.edu.cn. FAU - Guo, Wanhong AU - Guo W FAU - Zhang, Xing AU - Zhang X FAU - Chen, Feng AU - Chen F FAU - Ye, Tingjin AU - Ye T FAU - Liu, Wei AU - Liu W LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130716 PL - England TA - Water Res JT - Water research JID - 0105072 RN - 0 (Chlorine Compounds) RN - 0 (Oxides) RN - 16836-06-9 (ferrate ion) RN - 8061YMS4RM (chlorine dioxide) RN - E1UOL152H7 (Iron) SB - IM MH - Chlorine Compounds/*chemistry MH - Disinfection/*methods MH - Iron/*chemistry MH - Oxidation-Reduction MH - Oxides/*chemistry MH - Water Purification/*methods OTO - NOTNLM OT - Chloramination OT - Chlorination OT - Chlorine dioxide OT - Disinfection by-products OT - Ferrate OT - Pre-oxidation EDAT- 2013/08/03 06:00 MHDA- 2014/04/12 06:00 CRDT- 2013/08/03 06:00 PHST- 2013/03/26 00:00 [received] PHST- 2013/06/29 00:00 [revised] PHST- 2013/07/06 00:00 [accepted] PHST- 2013/08/03 06:00 [entrez] PHST- 2013/08/03 06:00 [pubmed] PHST- 2014/04/12 06:00 [medline] AID - S0043-1354(13)00571-X [pii] AID - 10.1016/j.watres.2013.07.010 [doi] PST - ppublish SO - Water Res. 2013 Oct 1;47(15):5856-64. doi: 10.1016/j.watres.2013.07.010. Epub 2013 Jul 16.