Effective removal of hazardous cationic dye from polluted water using sulfonated copolymer hydrogel: Synthesis, nonlinear isotherm, and kinetics investigation

Effective removal of hazardous cationic dye from polluted water using sulfonated copolymer hydrogel: Synthesis, nonlinear isotherm, and kinetics investigation

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In this study, a novel copolymer hydrogel according to poly (acrylonitrile-co-sodium styrene sulfonate) (ASD) as an effective adsorbent was prepared via free radical polymerization of the solution at a ratio of 1:1 to remove cationic crystal violet dye (CV) from wastewater.The prepared hydrogel was thoroughly characterized using FTIR, TGA, SEM and EDX analysis.The hydrogel that was produced has hindirochakkahaniya.com a notable capacity for adsorbing cationic dye uptake over a wide pH range as well as easily separated without the need for filtration and centrifugation.Under optimal conditions using 1 g/L of hydrogel, 400 mg/L dye concentration and contact time of 5 h, the prepared hydrogel showed high dye removal efficiency approaching 100 %.

The sulfonated copolymer hydrogel has a maximum adsorption capacity of 518.49 mg/g, which is six times larger than pristine PAN.The Langmuir model properly represented the isotherm adsorption data, however the kinetics data was better described by elbeco adu ripstop pants the pseudo-second-order model.Based on the calculated thermodynamic characteristics, the process of CV dye adsorption on sulfonated copolymer hydrogel surface was spontaneous and exothermic.