Efficiency of may flower seed carbon to uptake Fe (II) from aqueous solution: Kinetic and isotherm studies

Abstract

This study dealt with preparation and efficient utilization of may flower seed carbon (MFSC) to adsorb Fe (II) from aqueous solution. Batch experiments were conducted to analyze the impact of adsorption parameters viz, contact time, initial metal ion concentration, adsorbent dose and pH on adsorption process. The results revealed that iron removal increased gradually up to a maximum of 99.52% and removal attains maximum at 80 min. Complete removal of Fe (II) was observed at a dosage of 100 mg/50 mL of pH 6 and 80 min contact time. Experimental data were fitted with Langmuir, Freundlich and Dubinin –Radushkevich (D‐R) isotherm models and was observed to be better explained by Langmuir adsorption model. The monolayer adsorption was 49.75 mg g−1 of Fe (II) on MFSC and the adsorption process followed Pseudo second order kinetics; regeneration of carbon was possible with 0.3 M HCl. © 2018 American Institute of Chemical Engineers Environ Prog, 38: S243–S249, 2019