Sodium isopropyl xanthate degradation by advanced oxidation processes |
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| Affiliation: | 1. Universidad de Santiago de Chile, Facultad de Ingeniería, Departamento de Ing., Metalúrgica, Avda. L.B. O’Higgins 3363, Estación Central, Santiago, Chile;2. Centro Universitário Feevale, ICET, RS 239, 2755, CEP 93352-000 Novo Hamburgo, RS, Brazil;3. Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-Graduação em Engenharia de Minas, Metalúrgica e de Materiais (PPGE3M), Av. Bento Gonçalves 9500, CEP 91501-970 Porto Alegre, RS, Brazil;1. Lappeenranta University of Technology, Laboratory of Chemistry, Skinnarilankatu 34, FI-53850 Lappeenranta, Finland;2. Outotec (Finland), Puolikkotie 8, PO Box 84, FI-02230 Espoo, Finland;1. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China;2. Zhongye Changtian International Engineering Co., Ltd, Changsha 410083, China;3. Hunan Research Institute of Non-ferrous Metals, Changsha 410083, China;1. School of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China;2. Guangdong Vocational College of Environmental Protection Enginering, Foshan 528216, PR China;1. Mining Engineering Department, University of Birjand, P.O. Box 97175-376, Birjand, Iran;2. Chemical Department, University of Birjand, P.O. Box 97175-376, Birjand, Iran;1. Powder Metallurgy Research Institute, Central South University, Changsha 410083, China;2. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China;3. Key Laboratory for Mineral Materials and Application of Hunan Province, Central South University, Changsha 410083, China |
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| Abstract: | This paper presents the results obtained by different oxidative processes when an aqueous solution containing sodium isopropyl xanthate is treated; this reagent is used in the flotation of copper minerals. The advanced oxidation processes used are UV photolysis, direct electrolysis and photoelectrooxidation. The solutions used containing sodium isopropyl xanthate were adjusted to the following concentrations: 6, 8, 10, 25 and 40 mg L−1. The results show that the three oxidation processes proved to be suitable for the destruction of xanthate, with the following maximum destruction efficiencies: 76% for electrolysis, 95% for UV photolysis and 99% for photoelectrooxidation. |
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