Selective Adsorption of Phenol and Resorcinol from Aqueous Solution by Pectin/Poly (Acrylamide–Co-2-Acrylamido-2-Methyl–1-Propanesulfonic Acid) Chelating (PPAA) Hydrogels: Equilibrium, Kinetics, and Modeling

Selective Adsorption of Phenol and Resorcinol from Aqueous Solution by Pectin/Poly (Acrylamide–Co-2-Acrylamido-2-Methyl–1-Propanesulfonic Acid) Chelating (PPAA) Hydrogels: Equilibrium, Kinetics, and Modeling

In this work, Pectin/Poly (acrylamide–co-2-acrylamido-2-methyl–1-propanesulfonic acid) chelating (PPAA) hydrogels, anovel adsorbent was used for the adsorption of phenol and resorcinol systematically. Batch experiment studies showed that theremoval efficiency of phenol and resorcinol by PPAA was influenced by pH, adsorbent dose, contact time and the concentrationsof phenol and resorcinol solutions. Kinetics and isotherms at different concentrations were performed to evaluate the adsorptioncapacity. The PPAA adsorption capacity towards resorcinol was greater than phenol. The adsorbent was characterized by FourierTransform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) and Energy Dispersive X- ray Spectroscopy(EDX). The adsorption capacity of PPAA hydrogels calculated from the Langmuir model was found to be 80.64 mg/g and 86.20mg/g for phenol and resorcinol respectively.