REMOVAL OF RHODAMINE 6G DYE FROM WATER SOLUTION BY ALT-MALEIC ANHYDRIDE-STYRENE COPOLYMER, CROSS-LINKED WITH GLYCERIN

Abstract

The Rhoda mine 6G dye was extracted from water using a copolymer consisting of styrene, alt-maleic anhydride, and glycerin. The degree of elimination was examined in relation to temperature, sorbent quantity, contact time, initial dye concentration, and solution pH. We used Freundlich, D-R, and Langmuir isotherms to check the consistency of the equilibrium sorption results. According to the Langmuir equation, the maximum amount of sorption that can occur at equilibrium is 14.73 mg g-1. Using the D-R equation and the mean sorption energy of the Rhoda mine 6G dye (5.472 kJ mol-1), we can evaluate its effect on the polymer-sorbent. We studied the surface properties and geometry of dye-loaded sorbents after sorption using scanning electron microscopy (SEM). SEM images demonstrated a relationship between sorbents with uneven surfaces and Rhoda mine 6G dye molecules. The pseudo-second-order model corresponded well with the motion data. The adsorption process is planned, unpredictable, and ultimately resulting in heat, as evidenced by the positive thermodynamic values of G° (7.45-6.04 kJ mol-1), H° (18.378 kJ mol-1), and S° (0.0374 kJ mol-1K-1).