Cellulose based membrane for cationic pollutants removal from water

Abstract

This study focuses on the removal of cation and cationic dye from wastewater by adsorption on a biobased adsorbent. Cellulose bio-based membrane, CMTA, was obtained by cross-linking of aminomodified cellulose fiber (CF-A) and tartaric acid (TA) using L-lysine as a cross-linker. The properties of the prepared membrane were examined through FTIR and SEM techniques, and pHpzc and porosity determination. The effect of pH, initial concentration, temperature, and contact time on the adsorption efficiency was studied in a batch system. Results from the adsorption study proved CMTA adsorbs of Crystal violet (CV) dye and Ni2+ cation ion with high adsorption capacities of 285.01 mg g-1 and 54.35 mg g-1, respectively, fitted to the Langmuir isotherm. The kinetic study and thermodynamic parameters determination indicate spontaneous and diffusion-controlled processes.