Adsorption Capability of Lead, Nickel and Zinc by Exopolysaccharide and Dried Cell of Ensifer meliloti
Corresponding Author(s) : Amir Lakzian
alakzian@yahoo.com; lakzian@ferdowsi.um.ac.ir
Asian Journal of Chemistry,
Vol. 20 No. 8 (2008): Vol 20 Issue 8
Abstract
In this study, the adsorption capability of lead, nickel and zinc by exopolysaccharide (EPS) and dried cell of Ensifer meliloti (formerly Sinorhizobium meliloti) which nodulates alfalfa has been investigated. The results showed that dried cells had less adsorbing tendency compared to EPS of Ensifer meliloti MS-125. 0.02 g of EPS adsorbed 89, 85 and 66 % of lead, nickel and zinc, respectively, presented in 50 mg L-1 solutions. Maximum adsorption of lead, nickel and zinc were 110, 54 and 94 mg g-1 EPS, respectively, estimated by using Langmuir model.
Keywords
Ensifer meliloti
Sinorhizobium meliloti
Exopolysaccharide
Biosorption
Heavy metals
Langmuir model
Lakzian, A., R. Berenji, A., Karimi, E., & Razavi, S. (2010). Adsorption Capability of Lead, Nickel and Zinc by Exopolysaccharide and Dried Cell of Ensifer meliloti. Asian Journal of Chemistry, 20(8), 6075–6080. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/13060
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