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Removal of Mercury (II) by Adsorption Onto Silk Cotton Hull Activated Carbon
Activated carbon prepared from silk cotton hull 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 150 min for 10, 20, 30 mg/L of Hg (II) concentration. Adsorption followed Langmuir isotherm. The percent removal increased with increase in pH from 2 to 5 and remains static from pH 5 to 10. Desorption studies were performed with dilute hydrochloric acid solution. Silk cotton hull carbon was found to be effective in removal of Hg (II) from aqueous solution and economically viable.
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