AQUEOUS RHODAMINE 6G TREATMENT WITH CROSS‑LINKED COPOLYMER

Abstract

Glycerin, styrene, and alt-maleic anhydride were used as a copolymer to extract the Rhoda mine 6G dye from water. Time in contact, initial dye concentration, temperature, sorbent amount, and solution pH were all measured to determine the degree of elimination. At equilibrium, we checked that the sorption data were consistent using Freundlich, D-R, and Langmuir isotherms. The maximum sorption capacity at equilibrium is 14.73 mg g-1, as indicated by the Langmuir equation. It is possible to evaluate its effect on the polymer-sorbent by applying the D-R equation and the average sorption energy of the Rhoda mine 6G dye (5.472 kJ mol-1). Scanning electron microscopy (SEM) was used to examine the surface characteristics and geometry of dye-loaded sorbents after sorption. Images captured by scanning electron microscopy (SEM) showed a connection between sorbents with uneven surfaces and Rhoda mine 6G dye molecules. The motion data were highly congruent with the pseudo-second-order model. 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) show that the adsorption process is predictable, unexpected, and generates heat.