Application of response surface methodology in physicochemical removal of dyes from wastewater: A critical review
Shahab Karimifard1, Mohammad Reza Alavi Moghaddam2
1Department of Civil and Environmental Engineering, Amirkabir University of Technology (Tehran Polytechnic), Hafez St., Tehran 15875-4413, Iran; Department of Civil Engineering, University of Nebraska-Lincoln, Lincoln, NE 68583, United States.
Abstract:
Response surface methodology (RSM) is a powerful tool in designing the experiments and optimizing different environmental processes. However, when it comes to wastewater treatment and specifically dye-containing wastewater, two questions arise; "Is RSM being used correctly?" and "Are all capabilities of RSM being exploited properly?". The current review paper aims to answer these questions by scrutinizing different physicochemical processes that utilized RSM in dye removal. The literature that applied RSM to adsorption, advanced oxidation processes, coagulation/flocculation and electrocoagulation processes were critically reviewed in this paper. The common errors in applying RSM to physicochemical removal of dyes are identified and some suggestions are made for future studies.
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