Investigation of sorption capacity of AMPS-(PHE-Ce)/MC hydrogel for effective removal of basic red 2 dye

Abstract

Using toxic and non-biodegradable dyes in various industries has resulted in severe environmental issues and is detrimental to living organisms. To reduce the harmful effects of these contaminants, it is essential to develop efficient effluent treatment methods. Hydrogel sorbents are a promising solution to this problem due to their high efficacy, easy synthesis, quick recovery, and potential for future reuse. In this study, a hydrogel sorbent using 2-acrylamido-2-methylepropanesulfonic acid, polyhydroxyethyl cellulose, and moisiv type 5A 1/16th inches pellet (moisiv clay) [AMPS-(PHE-Ce)/MC] was synthesized. The hydrogel composite material achieved equilibrium in 24 hours by Fickian diffusion, absorbing water and expanding in size. To investigate the sorption potential of the hydrogel sorbent, the cationic probe dye basic red 2 (BR-2) was used as the target pollutant. Different isotherm and kinetic models were applied to analyze the sorption data. The analysis of the sorption data revealed that the hydrogel facilitated the chemisorption of BR-2 through the ionic interaction with the dye. The hydrogel exhibited impressive sorption capacities (1331 mg g−1), which suggests that it holds promise as an efficient solution for eliminating cationic dyes in various industrial and environmental settings.