Response Surface Analysis of Photo-Fenton Oxidation of Simazine

Authors: Catalkaya, Ebru Cokay; Kargi, Fikret

Source: Water Environment Research, Volume 81, Number 7, July 2009 , pp. 735-742(8)

Publisher: Water Environment Federation

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Abstract:

Removal of simazine from aqueous solution by photo-Fenton oxidation was investigated using Box-Behnken statistical experiment design and the response surface analysis. The effects of simazine, hydrogen peroxide (H 2O 2), and iron(II) concentrations on the extent of simazine and total organic carbon (TOC) removals were investigated. Optimum reagent doses yielding the highest simazine and TOC removals were determined. The iron(II) concentration had a more pronounced effect than hydrogen peroxide on the percent simazine removal, while all parameters affected the mineralization (TOC removal) of simazine. Nearly complete removal of simazine was achieved within 6 minutes. However, complete mineralization of simazine was not achieved, even within 60 minutes at high simazine doses, indicating the formation of some intermediate products. The optimal H 2O 2/Fe(II)/simazine ratio, resulting in the maximum pesticide (100%) and TOC removal (100%), was found to be 50/30/0.5 (mg/L).

Keywords: Box-Behnken design; advanced oxidation; photo-Fenton; reagent doses; response surface analysis; simazine

Document Type: Research Article

DOI: http://dx.doi.org/10.2175/106143009X407429

Publication date: July 1, 2009

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  • Water Environment Research® (WER®) publishes peer-reviewed research papers, research notes, state-of-the-art and critical reviews on original, fundamental and applied research in all scientific and technical areas related to water quality, pollution control, and management. An annual Literature Review provides a review of published books and articles on water quality topics from the previous year.

    Published as: Sewage Works Journal, 1928 - 1949; Sewage and Industrial Wastes, 1950 - 1959; Journal Water Pollution Control Federation, 1959 - Oct 1989; Research Journal Water Pollution Control Federation, Nov 1989 - 1991; Water Environment Research, 1992 - present.
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