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Degradation of alkylphenolic compounds in aqueous media by fenton and ultraviolet induced fenton reaction
Authors
Erbatur O.
Irmak S.
Kuşvuran E.
Publication date
1 January 2006
Publisher
Abstract
In this paper, we studied Fenton and photo-Fenton-advanced oxidation processes for degradation of alkylphenolic compounds under various experimental conditions. Bisphenol A (BPA) has been degraded more slowly than 3,5-dimethylphenol (3,5-DMP) and 2,5-dimethylphenol (2,5-DMP), but faster than 2,4,6-trimethylphenol (2,4,6-TMP) under the same experimental conditions (ratios of Fe2+/Organic Substrate-2, H2O2/Organic Substrate=14). Mineralization rate of BPA was increased by irradiation of Fenton reagent with UV light (photo-Fenton, 40 W UV lamp), and 89% of mineralization was achieved for 700 ml solutions, while only 63% mineralization was observed in absence of UV-light (Fenton) at 250 min reaction times. Considerable excess of H2O2 in reaction medium caused decreases in mineralization efficiency, due to scavenging the hydroxyl radicals generated in Fenton and photo-Fenton reactions. The efficiency of the degradation was improved by loading H2O2 into reaction medium in small amounts at various time intervals. © by PSP 2006
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Last time updated on 06/02/2020