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Adsorption of Pb (II) from Aqueous Solutions on Expanded Graphite

Journal Advanced Materials Research (Volumes 361 - 363)
Volume Natural Resources and Sustainable Development
Edited by Qunjie Xu, Honghua Ge and Junxi Zhang
Pages 55-58
DOI 10.4028/www.scientific.net/AMR.361-363.55
Citation Ying Hua Zhao et al., 2011, Advanced Materials Research, 361-363, 55
Online since October, 2011
Authors Ying Hua Zhao, Jin Hui Dong, Ying Chen Zhang, Min Cong Zhu, Deng Xin Li
Keywords Expanded Graphite (EG), Lead Adsorption, Microwave Irradiation
Abstract

Expanded graphite (EG) was prepared by microwave irradiation at 1000 w for 60 s. It is a novel adsorbent for Pb (Ⅱ) adsorption. This paper aims to investigate the effect of the adsorption of EG. The adsorption behavior of Pb (Ⅱ) from aqueous solution onto EG was investigated with variety of parameters such as pH, adsorbents dosage, initial Pb (Ⅱ) concentration, contact time and temperature. On conditions that the pH=6.04,the dosage of adsorbent was 0.075g, the concentration of Pb(Ⅱ) was 100mg/L and the temperature was 15℃, the maximum removal rate could reach at 86.55% .The results showed that the EG was an efficient and novel adsorbent for the removal of lead from aqueous solution. The microstructures of the resultant expanded graphite were observed by scanning electron micrographs.

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