RSM (Response Surface Methodology) Modelling of Inter-Electrodes Spacing Effects on Phosphate Removal
Khalid Hashim, Jawad K. Al-Rifaie, Ahmed J. Aljaaf, Ibijoke Idowu, Joseph Amoako-Attah, Georgios Nikitas
Abstract
RSM modelling has been applied in this study to understand the effects of inter-electrodes on the performance of the electrochemical reactors in the removal of pollutants. RSM has been selected because it has the ability to predict the effects of more than one parameter on the targeted variable. Thus, the RSM has been used in this article to model the effects of inter-electrodes spaces (IES) (4 to 10 mm) and treatment time (TT) (5 – 55 min) on the ability of the electrocoagulation (EC) cells to remove phosphate from water. The results showed the best removal of phosphate was 92.5% at I-ES of 4 mm and TT of 50 min. High agreement was noticed between experimental and predicted removals (R <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> = 0.984).