Transformation of Iodide by Carbon Nanotube Activated Peroxydisulfate and Formation of Iodoorganic Compounds in the Presence of Natural Organic Matter
作者： Chaoting Guan , Jin Jiang , Congwei Luo , Suyan Pang , Chengchun Jiang
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摘要: In this study, we interestingly found that peroxydisulfate (PDS) could be activated by a commercial multiwalled carbon nanotube (CNT) material via nonradical pathway. Iodide (I–) was quickly and almost completely oxidized to hypoiodous acid (HOI) in the PDS/CNT system over pH range of 5–9, but further transformation iodate (IO3–) negligible. A kinetic model proposed, which involved formation reactive PDS-CNT complexes, then their decomposition into sulfate anion (SO42–) inner electron transfer within complexes or competitively reacting with I–. Several influencing factors (e.g., PDS CNT dosages, solution pH) on I– oxidation kinetics were evaluated. Humic (HA) decreased I–, probably resulting from its inhibitory effect interaction between form complexes. Moreover, adsordable organic iodine compounds (AOI) as well specific iodoform iodoacetic appreciably produc...
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F. Keppler, R. Eiden, V. Niedan, J. Pracht, H. F. Schöler, Halocarbons produced by natural oxidation processes during degradation of organic matter Nature. ,vol. 403, pp. 298- 301 ,(2000) , 10.1038/35002055
Songhu Yuan, Peng Liao, Akram N. Alshawabkeh, Electrolytic manipulation of persulfate reactivity by iron electrodes for trichloroethylene degradation in groundwater. Environmental Science & Technology. ,vol. 48, pp. 656- 663 ,(2014) , 10.1021/ES404535Q
P. C. Moews, R. H. Petrucci, The oxidation of iodide ion by persulfate ion Journal of Chemical Education. ,vol. 41, pp. 549- ,(1964) , 10.1021/ED041P549
Jiaqi Liu, Xiangru Zhang, Comparative toxicity of new halophenolic DBPs in chlorinated saline wastewater effluents against a marine alga: Halophenolic DBPs are generally more toxic than haloaliphatic ones Water Research. ,vol. 65, pp. 64- 72 ,(2014) , 10.1016/J.WATRES.2014.07.024
István Lengyel, Jing Li, Kenneth Kustin, Irving R. Epstein, RATE CONSTANTS FOR REACTIONS BETWEEN IODINE- AND CHLORINE-CONTAINING SPECIES : A DETAILED MECHANISM OF THE CHLORINE DIOXIDE/CHLORITE-IODIDE REACTION Journal of the American Chemical Society. ,vol. 118, pp. 3708- 3719 ,(1996) , 10.1021/JA953938E
Bo Pan, Baoshan Xing, Adsorption Mechanisms of Organic Chemicals on Carbon Nanotubes Environmental Science & Technology. ,vol. 42, pp. 9005- 9013 ,(2008) , 10.1021/ES801777N
Beatriz Cancho, Francesc Ventura, MaTeresa Galceran, Alfredo Diaz, Susagna Ricart, Determination, synthesis and survey of iodinated trihalomethanes in water treatment processes Water Research. ,vol. 34, pp. 3380- 3390 ,(2000) , 10.1016/S0043-1354(00)00079-8
N. A. Frigerio, An Iodometric Method for the Macro- and Microdetermination of Peroxydisulfate. Analytical Chemistry. ,vol. 35, pp. 412- 413 ,(1963) , 10.1021/AC60196A046
S RICHARDSON, M PLEWA, E WAGNER, R SCHOENY, D DEMARINI, Occurrence, genotoxicity, and carcinogenicity of regulated and emerging disinfection by-products in drinking water: a review and roadmap for research. Mutation Research-reviews in Mutation Research. ,vol. 636, pp. 178- 242 ,(2007) , 10.1016/J.MRREV.2007.09.001
Tao Ye, Bin Xu, Yi-Li Lin, Chen-Yan Hu, Lin Lin, Tian-Yang Zhang, Nai-Yun Gao, Formation of iodinated disinfection by-products during oxidation of iodide-containing waters with chlorine dioxide Water Research. ,vol. 47, pp. 3006- 3014 ,(2013) , 10.1016/J.WATRES.2013.03.003