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Rapid oxidation of iodide and hypoiodous acid with ferrate and no formation of iodoform and monoiodoacetic acid in the ferrate/I-/HA system.
Water Res. 2018 11 01; 144:592-602.WR

Abstract

Toxic and odorous iodinated disinfection byproducts (I-DBPs) could form in the chemical oxidation of iodine-containing water. A critical step for controlling the hazardous I-DBPs is to convert the iodine species into stable and harmless iodate (IO3-) while inhibiting the accumulation of highly reactive hypoiodous acid (HOI). Herein, the oxidation of I- and HOI with ferrate was investigated, and the formation profile of HOI was determined based on 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) coloring method through a stopped-flow spectrophotometer. The second-order rate constants (kapp) of ferrate with HOI decreased from 1.6 × 105 M-1s-1 to 8.3 × 102 M-1s-1 as the solution pH varied from 5.3 to 10.3, which were 7.5, 7.2 and 13.8 times higher than that of ferrate with I- at pH 6.0, 7.0 and 8.0, respectively. Compared with other oxidants such as ozone, hypochlorous acid, chloramine and potassium permanganate, ferrate would swiftly oxidize HOI formed in the I- oxidation process. For the ferrate oxidation of I-containing water, HOI was swiftly oxidized to IO3- from pH 5.0 to 9.0. Phosphate buffer promoted the oxidation of I- while inhibited the oxidation of HOI with ferrate. When 5 mgC/L of humic acids (HA) existed in the solution, no formation of iodoform and monoiodoacetic acid (MIAA) was observed in the oxidation of iodide (20 μM) with ferrate (from 10 μM to 80 μM). These results suggested that ferrate oxidation could be an effective method for the control of I-DBPs in iodine-containing water treatment.

Authors+Show Affiliations

State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China. Electronic address: wanglu9195@163.com.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China.State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China. Electronic address: majun@hit.edu.cn.

Pub Type(s)

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

Language

eng

PubMed ID

30092505

Citation

Wang, Xianshi, et al. "Rapid Oxidation of Iodide and Hypoiodous Acid With Ferrate and No Formation of Iodoform and Monoiodoacetic Acid in the ferrate/I-/HA System." Water Research, vol. 144, 2018, pp. 592-602.
Wang X, Liu Y, Huang Z, et al. Rapid oxidation of iodide and hypoiodous acid with ferrate and no formation of iodoform and monoiodoacetic acid in the ferrate/I-/HA system. Water Res. 2018;144:592-602.
Wang, X., Liu, Y., Huang, Z., Wang, L., Wang, Y., Li, Y., Li, J., Qi, J., & Ma, J. (2018). Rapid oxidation of iodide and hypoiodous acid with ferrate and no formation of iodoform and monoiodoacetic acid in the ferrate/I-/HA system. Water Research, 144, 592-602. https://doi.org/10.1016/j.watres.2018.07.061
Wang X, et al. Rapid Oxidation of Iodide and Hypoiodous Acid With Ferrate and No Formation of Iodoform and Monoiodoacetic Acid in the ferrate/I-/HA System. Water Res. 2018 11 1;144:592-602. PubMed PMID: 30092505.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Rapid oxidation of iodide and hypoiodous acid with ferrate and no formation of iodoform and monoiodoacetic acid in the ferrate/I-/HA system. AU - Wang,Xianshi, AU - Liu,Yulei, AU - Huang,Zhuangsong, AU - Wang,Lu, AU - Wang,Yicheng, AU - Li,Yanting, AU - Li,Juan, AU - Qi,Jingyao, AU - Ma,Jun, Y1 - 2018/07/27/ PY - 2018/05/14/received PY - 2018/07/18/revised PY - 2018/07/25/accepted PY - 2018/8/10/pubmed PY - 2019/1/1/medline PY - 2018/8/10/entrez KW - Disinfection byproducts KW - Hypoiodous acid KW - Iodide KW - Iodinated disinfection byproducts KW - Iodoform SP - 592 EP - 602 JF - Water research JO - Water Res. VL - 144 N2 - Toxic and odorous iodinated disinfection byproducts (I-DBPs) could form in the chemical oxidation of iodine-containing water. A critical step for controlling the hazardous I-DBPs is to convert the iodine species into stable and harmless iodate (IO3-) while inhibiting the accumulation of highly reactive hypoiodous acid (HOI). Herein, the oxidation of I- and HOI with ferrate was investigated, and the formation profile of HOI was determined based on 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonate) (ABTS) coloring method through a stopped-flow spectrophotometer. The second-order rate constants (kapp) of ferrate with HOI decreased from 1.6 × 105 M-1s-1 to 8.3 × 102 M-1s-1 as the solution pH varied from 5.3 to 10.3, which were 7.5, 7.2 and 13.8 times higher than that of ferrate with I- at pH 6.0, 7.0 and 8.0, respectively. Compared with other oxidants such as ozone, hypochlorous acid, chloramine and potassium permanganate, ferrate would swiftly oxidize HOI formed in the I- oxidation process. For the ferrate oxidation of I-containing water, HOI was swiftly oxidized to IO3- from pH 5.0 to 9.0. Phosphate buffer promoted the oxidation of I- while inhibited the oxidation of HOI with ferrate. When 5 mgC/L of humic acids (HA) existed in the solution, no formation of iodoform and monoiodoacetic acid (MIAA) was observed in the oxidation of iodide (20 μM) with ferrate (from 10 μM to 80 μM). These results suggested that ferrate oxidation could be an effective method for the control of I-DBPs in iodine-containing water treatment. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/30092505/Rapid_oxidation_of_iodide_and_hypoiodous_acid_with_ferrate_and_no_formation_of_iodoform_and_monoiodoacetic_acid_in_the_ferrate/I_/HA_system_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0043-1354(18)30604-3 DB - PRIME DP - Unbound Medicine ER -