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Degradation of anionic surfactants using the reactor based on dielectric barrier discharge

Aonyas Munera Mustafa (Faculty of Chemistry, Belgrade)
Dojčinović Biljana P. (Center of Chemistry, Institute of Chemistry, Technology and Metallurgy, Belgrade)
Dolić Slobodan D. (Faculty of Chemistry, Belgrade)
Obradović Bratislav M. (Faculty of Physics, Belgrade)
Manojlović Dragan D. (Faculty of Chemistry, Belgrade)
Marković Marijana D. (Center of Chemistry, Institute of Chemistry, Technology and Metallurgy, Belgrade)
Roglić Goran M. (Faculty of Chemistry, Belgrade)

Two anionic surfactants (sodium lauryl sulfate - SDS and sodium dodecylbenzenesulfonate - SDBS) were treated with dielectric barrier discharge. Loss of surfactant activity, decrease of chemical oxygen demand and total organic carbon as well as lower toxicity of degradation products were determined. Effects of catalysts - hydrogen peroxide and iron (II), on parameters mentioned above, were determined. Catalysts affect the degradation of SDBS and in the case of SDS catalysts have no effect on degradation. Both catalysts induce the decrease of COD and TOC values. Toxicity of solutions after the plasma treatment is lower in all the systems tested.

Keywords: plasma treatment, sodium lauryl sulfate, sodium dodecybenzene-sulfonate, homogenous, catalysis

Projekat Ministarstva nauke Republike Srbije, br. OI 172030