• Control of cr(vi) pollution by newly generated adsorbents

Dr Sipu Jayswal

Abstract:
In order to remove hexavalent chromium (Cr(VI)) from aqueous solutions, this study examines the effectiveness of three new adsorbents: biochar, metal-organic frameworks (MOFs), and graphene-based nanocomposites. Remediation of Cr(VI), a very hazardous environmental contaminant, is extremely difficult. To examine how well these adsorbents performed under different circumstances, including pH, contact time, and adsorption kinetics, adsorption experiments were carried out. The results showed that nanocomposites outperformed both biochar and MOFs in terms of adsorption effectiveness, achieving 95% removal of Cr(VI) at pH 2. According to the Langmuir isotherm model, nanocomposites had a maximum adsorption capacity of 95.4 mg/g, which was much more than that of MOFs (82.1 mg/g) and biochar (45.0 mg/g). Nanocomposites exhibited pseudo-second-order kinetics, which suggests faster adsorption rates, according to kinetic studies. Furthermore, after three adsorption-desorption