Adsorption of chromium ions using two types of aqueous biochar
Abstract
Biochar is a porous, carbon-rich substance created when biomass is thermally broken down in an oxygen-limited environment. The removal of chromium ions from polluted water has been extensively investigated because of its large surface area and surface functional groups. This study observes the production of biochar from a variety of biomass sources, such as Pomegranate husks (Po-Biochar) and animal waste (An-Biochar), and assesses how well these methods remove Cr(VI) from aqueous solutions. FTIR, FE-SEM, and BET were used to describe the biochar samples. The effects of pH, contact duration, Cr(VI) concentration, and biochar dose were evaluated using adsorption studies. According to the data, An-Biochar exhibited the maximum adsorption capacity. The adsorption process also followed pseudo-second-order kinetics, and the Freundlich isotherm was found to be the best one that can describe the adsorption of chromium ions Cr(VI) over Po-Biochar and An-Biochar samples, compared with the Langmuir isotherm, all of which were noted from the correlation coefficient values R2.