Multivariate-parameter optimization of acid blue-7 wastewater treatment by Ti/TiO2 photoelectrocatalysis via the Box-Behnken design

Fu, J. F., Zhao, Y. Q., Xue, X. D., Li, W. C. and Babatunde, Akintunde 2009. Multivariate-parameter optimization of acid blue-7 wastewater treatment by Ti/TiO2 photoelectrocatalysis via the Box-Behnken design. Desalination 243 (1-3) , pp. 42-51. 10.1016/j.desal.2008.03.038

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Abstract

The 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 (range 3.2–6), light intensity (range 10–20×102 μW/cm2) and bias potential (range 0.1–1.1 V) 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 16.02×102 μW/cm2 and bias potential of 0.68 V. Decolourization efficiency of 90.13%, obtained experimentally under such optimal conditions, agreed was highly with that of 90.44%, estimated by the equations.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Uncontrolled Keywords:	Acid blue-7; Box–Behnken design (BBD); Optimization; Response surface methodology (RSM); Ti/TiO2 electrode
Publisher:	Elsevier
ISSN:	0011-9164
Last Modified:	04 Jun 2017 04:10
URI:	https://orca.cardiff.ac.uk/id/eprint/34010

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