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Comparison between chlorination and ozonation treatments for the elimination of the emerging contaminants amitriptyline hydrochloride, methyl salicylate and 2-phenoxyethanol in surface waters and secondary effluents

2014; Wiley; Volume: 90; Issue: 8 Linguagem: Inglês

10.1002/jctb.4441

1097-4660

Francisco J. Real, Javier F. Benitez, Juan L. Acero, Francisco Casas,

Pharmaceutical and Antibiotic Environmental Impacts

Journal of Chemical Technology & BiotechnologyVolume 90, Issue 8 p. 1400-1407 Research Article Comparison between chlorination and ozonation treatments for the elimination of the emerging contaminants amitriptyline hydrochloride, methyl salicylate and 2-phenoxyethanol in surface waters and secondary effluents Francisco J. Real, Corresponding Author Francisco J. Real Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, 06006 Badajoz, SpainCorrespondence to: F.J. Real, Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, 06006 Badajoz, Spain. E-mail: [email protected]Search for more papers by this authorJavier F. Benitez, Javier F. Benitez Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, 06006 Badajoz, SpainSearch for more papers by this authorJuan L. Acero, Juan L. Acero Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, 06006 Badajoz, SpainSearch for more papers by this authorFrancisco Casas, Francisco Casas Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, 06006 Badajoz, SpainSearch for more papers by this author Francisco J. Real, Corresponding Author Francisco J. Real Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, 06006 Badajoz, SpainCorrespondence to: F.J. Real, Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, 06006 Badajoz, Spain. E-mail: [email protected]Search for more papers by this authorJavier F. Benitez, Javier F. Benitez Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, 06006 Badajoz, SpainSearch for more papers by this authorJuan L. Acero, Juan L. Acero Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, 06006 Badajoz, SpainSearch for more papers by this authorFrancisco Casas, Francisco Casas Departamento de Ingeniería Química y Química Física, Universidad de Extremadura, 06006 Badajoz, SpainSearch for more papers by this author First published: 23 May 2014 https://doi.org/10.1002/jctb.4441Citations: 8Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract BACKGROUND A new class of micropollutants, generally called emerging contaminants (ECs), is increasingly found in surface waters and wastewaters. Owing to their potential ecologic and health risks, ECs must be removed using different procedures, such as chemical oxidation processes. RESULTS The oxidation of the selected ECs amitriptyline hydrochloride, methyl salicylate and 2-phenoxyethanol has been investigated by means of two known oxidizing agents: chlorine and ozone. The efficiencies of elimination of each system have been compared, and apparent second-order rate constants of the reactions involved are determined. The variation of these kinetic parameters with pH is also evaluated, which enables determination of the intrinsic rate constant values for the oxidation reactions of the neutral and dissociated species. In addition, the simultaneous oxidation of these selected ECs in different water systems (ultrapure water, surface water from a reservoir and two secondary effluents) is studied, and the influence of operating conditions on the removal efficiency is established. CONCLUSION The reaction rates between chlorine or ozone and neutral and dissociated species revealed that the ozonation process is around three orders of magnitude higher than chlorination. © 2014 Society of Chemical Industry REFERENCES 1Lapworth DJ, Baran N, Stuart ME and Ward RS, Emerging organic contaminants in groundwater: a review of sources, fate and occurrence. Environ Pollut 163: 287–303 (2012). 10.1016/j.envpol.2011.12.034 CASPubMedWeb of Science®Google Scholar 2Jjemba PK, Excretion and ecotoxicity of pharmaceuticals and personal care products in the environment. 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