Removal Of Mercury (Ⅱ) From Aqueous Solution By Adsorption On To Ricinus Communis Pericarp Activated Carbon

摘要

Activated carbon prepared from Ricinus Communis Pericarp was investigated for removal of mercury (Ⅱ) from aqueous solution by adsorption technique. Batch mode adsorption studies were carried out under varying conditions of agitation time, metal ion concentration, adsorbent dose, and pH. Adsorption equilibrium was obtained in 100 min for all the concentrations of mercury studied. Adsorption parameters were determined using both Langmuir and Freundlich isotherm models. The percent removal increased with increase in pH from 2 to 6 and remains static from pH 6 to 10. The percent removal increased with increases in agitation time, adsorbent dosage and decreases in metal ions concentration. Desorption studies was performed with dilute hydrochloric acid solution. Ricinus Communis Pericarp carbon was found to be effective in removal of Hg (Ⅱ) from aqueous solution and economically viable.