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

Ming Yang; Ying Hua Zhao; Ying Chen Zhang; Deng Xin Li

doi:10.4028/www.scientific.net/AMR.347-353.89

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

Abstract:

Expanded graphite (EG) was prepared by microwave irradiation at 1000 w for 60 s. It is a novel adsorbent for Sn (Ⅱ) adsorption. This paper aims to investigate the effect of the adsorption of EG. The adsorption behavior of Sn (Ⅱ) from aqueous solution onto EG was investigated with variety of parameters such as pH, adsorbents dosage, initial Sn (Ⅱ) concentration, contact time and temperature. On conditions that the pH was 2.5, the dosage of adsorbent was 0.02 g, the concentration of Sn (Ⅱ) was 200 mg/L and the temperature was 15°C, the maximum removal rate can reach to 98.32%, and the adsorption quantity can reach to 245.7985 mg•g-1. The results showed that the EG was an efficient and novel adsorbent for the removal of stannum from aqueous solution.