Mubarak NM,Shapnathayammal S, Suchithra TG, Sahu JN, Abdullah EC, Jayakumar NS, Sabzoi N
The adsorption isotherm and kinetic studies on the removal of Mg2+ metal ion by using rice husk based magnetic bio char have been carried out. The analyses of batch mode experiments were performed to study the experimental parameters of pH, adsorbent dosage, agitation speed and contact time. From the statistical analysis, it was known that the highest removal of Mg2+ is at pH 4, adsorbent dosage of 0.5 g, agitation speed of 150 rpm and a contact time of 180 minutes. The initial concentration of 0.2 mg/l, the removal efficiency of Mg2+ using magnetic rice husk was 95% and the maximum adsorption capacity was 39.52 (mg/g) observed. The adsorption isotherms are well described by both Langmuir and Freundlich models and adsorption kinetic obeyed pseudo-second order.
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