BIOSORPTIVE REMOVAL OF COPPER(II) FROM WASTEWATER BY HYBRID BIOSORBENT: ADSORPTION KINETICS AND MECHANISMS

Abstract

Combining two well-known biosorbents, Pleurotus sajor caju and almond shell, with a newly created straightforward immobilization approach led to the creation of a unique hybrid biosorbent. The hybrid biosorbent’s capacity to eliminate Cu(II) from aqueous solution was assessed. The immobilized hybrid biosorbent exhibited the greatest values for Cu(II) adsorption at a pH about 5.0. The ideal contact period and metal concentration were 240 minutes and 10 mg/L, respectively. The pseudo-second order kinetics and Langmuir adsorption isotherms models were used to explain the biosorption kinetics and equilibria. The presence of multiple functional groups and active sites may be seen in the hybrid biosorbent’s FTIR spectra. Prior to biosorption, the hybrid biosorbent’s SEM micrograph showed that its surface was uneven, rough, and porous. A successful and potentially alluring method for dealing with heavy metal-polluted aqueous solutions is the hybrid biosorbent technique, which is quite inexpensive and effectively removes a lot of Cu(II).