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Removal of chlorine dioxide disinfection by-products by ferrous salts.
Water Res. 2001 Jan; 35(1):101-8.WR

Abstract

Chlorine dioxide when used as an effective disinfectant forms undesirable disinfection by-products, i.e. chlorite and chlorate ions. The aim of this research was to study the removal of these ions by ferrous ions in the presence or absence of oxygen. The efficiency of Fe+2 for ClO2- and ClO3- removal was followed by a determination of their initial and final concentrations, pH and delta Fe+2 consumed/delta ClO2- removed ratios. The optimal weight ratio of delta Fe+2 consumed/delta ClO2- removed for complete ClO2 removal was found to be close to the theoretical calculated value of 3.31. It was proved that ferrous salts can reduce chlorite ions to harmless Cl- ions. This method can be recommended as a part of ClO2 disinfection to ensure safe drinking water, with no harm to water consumers and to the environment.

Authors+Show Affiliations

Katz A
Environmental and Water Resources Engineering, Technion Israel Institute of Technology, Technion City, Haifa, 32000, Israel.
Narkis N
No affiliation info available

MeSH

ChloratesChloridesChlorine CompoundsDisinfectantsDisinfectionFerrous CompoundsIndicators and ReagentsOxidation-ReductionOxidesWater PurificationWater Supply

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

11257863

Citation

Katz, A, and N Narkis. "Removal of Chlorine Dioxide Disinfection By-products By Ferrous Salts." Water Research, vol. 35, no. 1, 2001, pp. 101-8.
Katz A, Narkis N. Removal of chlorine dioxide disinfection by-products by ferrous salts. Water Res. 2001;35(1):101-8.
Katz, A., & Narkis, N. (2001). Removal of chlorine dioxide disinfection by-products by ferrous salts. Water Research, 35(1), 101-8.
Katz A, Narkis N. Removal of Chlorine Dioxide Disinfection By-products By Ferrous Salts. Water Res. 2001;35(1):101-8. PubMed PMID: 11257863.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of chlorine dioxide disinfection by-products by ferrous salts. AU - Katz,A, AU - Narkis,N, PY - 2001/3/22/pubmed PY - 2001/4/17/medline PY - 2001/3/22/entrez SP - 101 EP - 8 JF - Water research JO - Water Res VL - 35 IS - 1 N2 - Chlorine dioxide when used as an effective disinfectant forms undesirable disinfection by-products, i.e. chlorite and chlorate ions. The aim of this research was to study the removal of these ions by ferrous ions in the presence or absence of oxygen. The efficiency of Fe+2 for ClO2- and ClO3- removal was followed by a determination of their initial and final concentrations, pH and delta Fe+2 consumed/delta ClO2- removed ratios. The optimal weight ratio of delta Fe+2 consumed/delta ClO2- removed for complete ClO2 removal was found to be close to the theoretical calculated value of 3.31. It was proved that ferrous salts can reduce chlorite ions to harmless Cl- ions. This method can be recommended as a part of ClO2 disinfection to ensure safe drinking water, with no harm to water consumers and to the environment. SN - 0043-1354 UR - https://www.unboundmedicine.com/medline/citation/11257863/Removal_of_chlorine_dioxide_disinfection_by_products_by_ferrous_salts_ DB - PRIME DP - Unbound Medicine ER -