Removal of dimethylsulfoxide from wastewater using mild oxidation with H2O2 over Ti-based catalysts

• Published in: Chemosphere (Oxford) Vol. 77; no. 8; pp. 1065 - 1068
• Main Authors: MIHAELA COJOCARIU, Ana, MUTIN, P. Hubert, DUMITRIU, Emil, VIOUX, André, FAJULA, François, HULEA, Vasile
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier 01.11.2009
• Subjects: Air. Soil. Water. Waste. Feeding; Animal, plant and microbial ecology; Applied ecology; Applied sciences; Biological and medical sciences; Catalysis; Chemical Sciences; Dimethyl Sulfoxide - chemistry; Dimethyl Sulfoxide - isolation & purification; Ecotoxicology, biological effects of pollution; Environment. Living conditions; Exact sciences and technology; Fundamental and applied biological sciences. Psychology; Hydrogen Peroxide - chemistry; Medical sciences; Oxidation-Reduction; Pollution; Public health. Hygiene; Public health. Hygiene-occupational medicine; Silicon Dioxide - chemistry; Temperature; Titanium - chemistry; Waste Disposal, Fluid; Water Pollutants, Chemical - chemistry; Water Pollutants, Chemical - isolation & purification; Hydrogen peroxide; TS-1; Dimethylsulfone; SiO; Oxidation; TiO; xerogel; Titanium oxide; Silica; Catalyst; Waste water; SiO2–TiO2 xerogel; dimethylsulfone; hydrogen peroxide
• ISSN: 0045-6535; 1879-1298
• DOI: 10.1016/j.chemosphere.2009.08.059

The mild catalytic oxidation of dimethylsulfoxide (DMSO) into biodegradable dimethylsulfone is proposed as an efficient pretreatment of wastewaters subjected to biological treatment processes. A SiO(2)-TiO(2) mesoporous xerogel prepared by a non-hydrolytic route, as well as titanium silicalite TS-1 showed very good activity and stability in the catalytic oxidation of DMSO with H(2)O(2) in dilute aqueous solution, at room temperature.