The Elimination of Chromium from Industrial Wastewater by Using Biochar and Zeolite

Abstract

This study investigates the efficiency of different materials, including, Zeolite (z), Biochar (B) and mix Zeolite/ Biochar (Z/B) for the remediation of industrial contaminated water with Cr. The experiments explore various factors that play an important role in the adsorption process, like initial metal ion concentration, adsorbent dosage, agitation time, and pH value. Results indicate that removal efficiency is higher at lower metal ion concentrations. The adsorption effectiveness of the material is the order: BZ > B > Z for Cr ions. The removal efficiency of BZ was 91% and 63.8%for Cr and increasing adsorbent dosage enhances adsorption percentage, with optimal removal observed at 1 g/L. The study suggests that BZ was the superior material for removing Cr ions, with optimal removal occurring at a mass of a sorbent 1 g/L and an optimum time of 120 minutes. Also, the pH of the solution influenced removal efficiency. with variations for Cr ion concentration Langmuir and Freundlich adsorption isotherms were applied, showing high correlation coefficients for Cr ion adsorption. Overall, the research emphasizes the potential of the tested material in alleviating Cr in contaminated water. Also, the BZ and B and Z exhibit superior performance in removing Cr ion from polluted water.