%0 Journal Article
%T Simple Response Surface Methodology: Investigation on Advance Photocatalytic Oxidation of 4-Chlorophenoxyacetic Acid Using UV-Active ZnO Photocatalyst
%A Kian Mun Lee
%A Sharifah Bee Abd Hamid
%J Materials
%P 339-354
%D 2015
%I MDPI AG
%R 10.3390/ma8010339
%X The performance of advance photocatalytic degradation of 4-chlorophenoxyacetic acid (4-CPA) strongly depends on photocatalyst dosage, initial concentration and initial pH. In the present study, a simple response surface methodology (RSM) was applied to investigate the interaction between these three independent factors. Thus, the photocatalytic degradation of 4-CPA in aqueous medium assisted by ultraviolet-active ZnO photocatalyst was systematically investigated. This study aims to determine the optimum processing parameters to maximize 4-CPA degradation. Based on the results obtained, it was found that a maximum of 91% of 4-CPA was successfully degraded under optimal conditions (0.02 g ZnO dosage, 20.00 mg/L of 4-CPA and pH 7.71). All the experimental data showed good agreement with the predicted results obtained from statistical analysis.
%K zinc oxide
%K central composite design
%K response surface methodology
%K 4-chlorophenoxyacetic acid
%K photocatalytic degradation
%U http://www.mdpi.com/1996-1944/8/1/339