Fu, J.F.J.F.FuZhao, Y.Q.Y.Q.ZhaoXue, X.D.X.D.XueLi, W.C.W.C.LiBabatunde, A.O.A.O.Babatunde2011-08-302011-08-302009 Elsev2009-07Desalination0011-9164http://hdl.handle.net/10197/3132The aim of this study is to obtain optimal decolourization conditions for Acid blue-7 (AB7) wastewater treatment by Ti/TiO2 photoelectrocatalysis using response surface methodology (RSM). On the basis of a three-variable Box-Behnken design (BBD), RSM was used to determine the effect of pH values (ranged from 3.2 to 6), light intensity (ranged from 10 to 20 ×102μW/cm2) and bias potential (ranged from 0.1 to 1.1V) on the levels of response, i.e. decolourization efficiency. By applying the quadratic regression analysis, the equations describing the behaviors of the response as simultaneous functions of the selected independent variables were developed. Accordingly, the optimal conditions were determined as pH of 3.41, light intensity of 16.02×102μW/cm2 and bias potential of 0.68V. Decolourization efficiency of 90.13%, obtained experimentally under such optimal conditions was highly agreed with that of 90.44%, estimated by the equations.320008 bytesapplication/pdfenThis is the author’s version of a work that was accepted for publication in Desalination. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Desalination Volume 243, Issues 1-3, July 2009, Pages 42-51 DOI: 10.1016/j.desal.2008.03.038.Acid blue-7Box-Behnken design (BBD)OptimizationResponse surface methodology (RSM)Ti/TiO2 electrodeWater--Purification--Color removalResponse surfaces (Statistics)Water--Purification--OxidationTitanium dioxideJournal Article2431-3425110.1016/j.desal.2008.03.038https://creativecommons.org/licenses/by-nc-sa/1.0/