Adsorption of Heavy Metal onto Activated Carbon Modified with Potassium Permanganate

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hiroshi Imaizumi¹  Naoki Kano¹  Liang Xu²  Meiling Pang² 

[1] Department of Chemistry and Chemical Engineering, Faculty of Engineering, Niigata University;Graduate School of Science and Technology, Niigata University

关键词: Activated Carbon;    KMnO4-Modified;    Adsorption;    Heavy Metals;    Langmuir Adsorption Isotherm;   

DOI  :  10.1252/jcej.13we208

来源: Maruzen Company Ltd

【 摘 要 】

References(19)Cited-By(1)This study investigated the adsorption of lead ions (Pb2+) by activated carbon modified with potassium permanganate (KMnO4). Activated carbon was chemically modified through impregnation with solutions of KMnO4 (0.01 mol/L and 0.03 mol/L). Adsorption experiments from aqueous solutions containing known amounts of Pb2+ were explored in a batch system. The amount of Pb2+ adsorbed at different pH values, initial concentrations, sorbent dosages, contact times, and temperature were determined by atomic absorption spectrometry (AAS) in order to determine the optimum conditions for Pb2+ adsorption. Moreover, the effects of common ions like sodium, potassium, calcium, and magnesium on the adsorption capacity were also studied. The Pb2+ adsorption on modified and unmodified activated carbon conformed to the Langmuir isothermal adsorption equation. Overall the modified activated carbon exhibited a higher adsorption capacity and stronger chemical affinity than pristine activated carbon. The rates of adsorption were found to conform to pseudo-second order kinetics.

【 授权许可】

Unknown