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Evaluation of Affecting Factors on the Ferrous Catalyzed Sodium Persulfate Oxidation for the Destruction of Organic Pollutant  

Yun, Yeobog (Department of Civil Engineering, Kyunghee University)
Park, Haimi (Department of Civil Engineering, Kyunghee University)
Ko, Sunghwan (Ecophile CO., LTD.)
Ko, Seokoh (Department of Civil Engineering, Kyunghee University)
Publication Information
Journal of Korean Society on Water Environment / v.25, no.1, 2009 , pp. 151-158 More about this Journal
Abstract
The objective of this study was to determine on optimum ratio of oxidant and catalyst and to evaluate affecting factors such as anions and cations on persulfate oxidation of organic pollutant. Fe(II) activated the persulfate anion to produce a sulfate free radicals and thus effectively used to degrade the target organic pollutant in aqueous system. The chloride ions reacted with sulfate radical produced the $Cl^{\cdot}$ atom and had positive effects on the oxidation of organic pollutant at the initial stage. However, it was observed that chloride ions had the scavenging effects on the rate of oxidation of organic pollutant. Cations and some heavy metals were partly able to activate the persulfate anion to generate a sulfate free radical. However, high levels of cations inhibited the oxidation of organic pollutant.
Keywords
Chloride; Heavy-metal; ISCO; Persulfate; Sulfate radical; Transition metal;
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