{"title":"Dechlorination of Chloride–Sulfate Solutions Using Ozone","authors":"A. V. Levanov, A. O. Orujev, O. Ya. Isaikina","doi":"10.1134/S0036024424702558","DOIUrl":null,"url":null,"abstract":"<p>Kinetic characteristics are determined for the release of chlorine during the oxidation of chloride ion in solutions Na<sup>+</sup>–H<sup>+</sup>–HSO<span>\\(_{4}^{ - }\\)</span>–Cl<sup>−</sup>, Mg<sup>2+</sup>–H<sup>+</sup>–HSO<span>\\(_{4}^{ - }\\)</span>–Cl<sup>−</sup>, Zn<sup>2+</sup>–H<sup>+</sup>–HSO<span>\\(_{4}^{ - }\\)</span>–Cl<sup>−</sup>, Cu<sup>2+</sup>–H<sup>+</sup>–HSO<span>\\(_{4}^{ - }\\)</span>–Cl<sup>−</sup>, Fe<sup>3+</sup>–H<sup>+</sup>–HSO<span>\\(_{4}^{ - }\\)</span>–Cl<sup>−</sup>, Mg<sup>2+</sup>–H<sup>+</sup>–Cl<sup>−</sup>, and Ca<sup>2+</sup>–H<sup>+</sup>–Cl<sup>−</sup>. With similar experimental parameters, the rate of the reaction acquires considerably different values, depending on the nature of the added salt. This is due to the possible catalysis of the reaction between O<sub>3</sub> and the Cl<sup>−</sup>(aq) cations of some metals; the formation of chloride and sulfate metal complexes, which alters the actual concentrations of reagents; and a change in the solubility of ozone. The solubility of ozone, the values of the Henry constant, and the Sechenov coefficient are found for aqueous solutions of zinc sulfate and magnesium sulfate with concentrations of 0–1 M at temperatures of 20 and 25°C.</p>","PeriodicalId":767,"journal":{"name":"Russian Journal of Physical Chemistry A","volume":"99 1","pages":"38 - 43"},"PeriodicalIF":0.7000,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Russian Journal of Physical Chemistry A","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1134/S0036024424702558","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Kinetic characteristics are determined for the release of chlorine during the oxidation of chloride ion in solutions Na+–H+–HSO\(_{4}^{ - }\)–Cl−, Mg2+–H+–HSO\(_{4}^{ - }\)–Cl−, Zn2+–H+–HSO\(_{4}^{ - }\)–Cl−, Cu2+–H+–HSO\(_{4}^{ - }\)–Cl−, Fe3+–H+–HSO\(_{4}^{ - }\)–Cl−, Mg2+–H+–Cl−, and Ca2+–H+–Cl−. With similar experimental parameters, the rate of the reaction acquires considerably different values, depending on the nature of the added salt. This is due to the possible catalysis of the reaction between O3 and the Cl−(aq) cations of some metals; the formation of chloride and sulfate metal complexes, which alters the actual concentrations of reagents; and a change in the solubility of ozone. The solubility of ozone, the values of the Henry constant, and the Sechenov coefficient are found for aqueous solutions of zinc sulfate and magnesium sulfate with concentrations of 0–1 M at temperatures of 20 and 25°C.
期刊介绍:
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.