Mineralization of alkylbenzenesulfonates in water by means of contact glow discharge electrolysis

Water Research
Ryo Amano, Meguru Tezuka

Abstract

Mineralization of aqueous alkylbenzenesulfonates (ABS) was investigated by means of contact glow discharge electrolysis (CGDE). Toluenesulfonic and dodecylbenzenesulfonic acids in a neutral phosphate buffer solution were smoothly degraded and eventually converted to inorganic carbon and sulfate ion when CGDE was conducted under the applied DC voltage of 500 V and current of ca. 90 mA. As the intermediate products, some phenolic compounds were detected as well as carboxylic acids such as oxalate, formate and so on. It was demonstrated that the decay of ABS followed the first-order rate law. Based on the detailed analysis of the hydroxylation products and kinetic consideration, it was assumed that hydroxyl radicals would play a crucial role in the oxidative degradation of aqueous ABS. The features of CGDE as a tool for the removal of organic pollutants in water were discussed in comparison with other physicochemical methods.

References

Dec 28, 2002·Water Research·Jinzhang GaoJingwan Kang
Sep 8, 2004·Water Research·Eleni ManousakiDionissios Mantzavinos

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Citations

Jan 23, 2014·Environmental Science and Pollution Research International·Zoltán ZsilákPéter Hajós
Aug 1, 2014·Journal of Environmental Sciences (China)·Haiming YangMeguru Tezuka
Nov 7, 2013·Journal of Environmental Sciences (China)·Haiming YangLihua Li
Nov 10, 2011·Journal of Environmental Sciences (China)·Haiming Yang, Meguru Tezuka
Dec 28, 2010·Water Research·Erzsébet Szabó-BárdosGyula Kiss
Jul 4, 2015·Environmental Science and Pollution Research International·Qing XinBin Yang

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