ORIGINAL RESEARCH
The Effect of Chloride Ions on Alkylbenzenesulfonate Degradation in the Fenton Reagent
J. Gaca*, M. Kowalska, M. Mróz
 
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Department of Chemistry and Chemical Engineering, University of Technology and Agriculture,
Seminaryjna 3, 85-326 Bydgoszcz, Poland
 
Pol. J. Environ. Stud. 2005;14(1):23–27
 
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ABSTRACT
Degradation of sodium alkylbenzenesulfonate (ABS) in the Fenton reagent in the presence of Cl- ions has been studied. An anionic surfactant sodium alkylbenzenesulfonate (C11-C14) has been selected as a model compound. The effect of individual components of the reactive system (H2O2, H2O2/Cl-, Fe2+/H2O2, Fe2+/H2O2/Cl-) on the degree of ABS degradation has been determined. The degree of ABS degradation has been found to be affected by the presence of Cl- ions and the mutual molar ratios of individual components of the system studied. Moreover, it influences on the composition of the post-reaction mixture. The use of the Fenton reagent in the presence of Cl- ions resulted in the formation of chloroorganic compounds in the solution studied. 2,4,6-trichlorophenol was identified in reaction products and its presence was confirmed using the HPLC - MS method and by HPLC with an internal standard. No chloroproducts were identified during degradation of ABS by the system H2O2/Cl-. When only H2O2 was applied, the concentration of the surfactant was unchanged.
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ISSN:1230-1485