ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Degradation and toxicity changes in aqueous solutions of chloroacetic acids by Fenton-like treatment using zero-valent iron
Tomáš Mackuľak, Josef Prousek, Miroslava Smolinská, Petra Olejníková, Alžbeta Takáčová, and Miloslav Drtil
Department of Environmental Engineering, Institute of Chemical and Environmental Engineering, Slovak University of Technology in Bratislava, Radlinského 9, 812 37, Bratislava, Slovakia
Abstract: Three priority pollutants, i.e. mono-, di-, and trichloroacetic acids, were degraded by the conventional Fenton AOP system (Fe2+ and H2O2). The results obtained suggest that the degradation decreased in the order: monochloroacetic, dichloroacetic, and trichloroacetic acid. The best of advanced oxidation processes (AOPs) for the degradation of trichloroacetic acid was reductive dechlorination with the use of zero-valent iron (Fe°). The results of Escherichia coli toxicity tests revealed that the reagents’ toxicity after the Fenton treatment process was decreased.
Keywords: Fenton reaction – toxicity test – chloroacetic acid – degradation – Escherichia coli
Full paper is available at www.springerlink.com.
Chemical Papers 67 (12) 1594–1598 (2013)