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Brahim Guezzen,Baghdad Medjahed,Abdelkader Benhelima,Abdelkrim Guendouzi,Mohamed A. Didi,Sami Zidelmal,Rafik Abdelkrim Boudia,Mehdi Adjdir 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.125 No.-
The optimal performance characteristics of hexadecyltrimethylammonium-modified bentonite (HDTMAB)for the removal of indigo carmine (IC, vat dye) from aqueous solution require a process parameterstudy. Using batch mode experiments and kinetic models, the study evaluated the adsorption behaviorand dye-adsorbent interaction at different temperatures, adsorbent dosages, and initial dye concentrations. The rating mechanism for adsorption in ICs was found to be quite similar to the pseudo-secondordermodel. All of these IC dye removal adsorption parameters were optimized using a Box-Behnkensurface statistical design with a pH of 6.6 as the starting point (as a fixed input parameter). At the 95%confidence level, the main effects of starting dye concentration and adsorbent dosage were both statisticallysignificant, as was the square impact of initial dye concentration (ANOVA). There was a negative interactionbetween the adsorbent dose and the initial dye concentration, and this led to the discovery of asubstantial detrimental effect. The primary factor in IC elimination was the initial dye concentration component(PC = 48.36%). At 34.28 C and a starting dye concentration of 53.3 mg L-1, 0.97 g L-1 of adsorbentwas optimal for removing 96.40% of IC from aqueous solutions, yielding a desirability of 1.00. The removaleffectiveness of IC dye by HDTMA-modified bentonite could be predicted and the experimental parametersoptimized using the simulated polynomial function. The regeneration capacity of the HDTMA-Badsorbent proves its importance in industrial wastewater treatment.