Publication Type : Journal Article
Publisher : Elsevier
Source : Carbohydrate Polymers 2009, 78 (4), 894–901. https://doi.org/10.1016/j.carbpol.2009.07.025.
Url : https://www.sciencedirect.com/science/article/abs/pii/S0144861709003828
Campus : Amritapuri
School : School for Sustainable Futures
Year : 2009
Abstract : Gum kondagogu (Cochlospermum gossypium), an exudates tree gum from India was explored for its potential to decontaminate toxic metals (Pb2+ and Cd2+). Optimum biosorption of metals were determined by investigating the contact time, pH, initial concentration of metal ions and biosorbent dose at 25 ± 2 °C. The maximum metal biosorption capacity for gum kondagogu was observed for Pb2+ (48.52 mg g−1) and Cd2+ (47.48 mg g−1) as calculated by Langmuir isotherm model. Kinetic studies showed that the biosorption rates could be described by pseudo-second-order expression. The metal interactions with biopolymer were assessed by FT-IR, SEM–EDXA and XPS analysis. Results based on these techniques suggest that mechanism of metal binding by the biopolymer involves micro-precipitation, ion-exchange and metal complexation.
Cite this Research Publication : Vinod, V. T. P.; Sashidhar, R. B.; Sreedhar, B.; Rama Rao, B.; Nageswara Rao, T.; Abraham, J. T. "Interaction of Pb2+ and Cd2+ with Gum Kondagogu (Cochlospermum Gossypium): A Natural Carbohydrate Polymer with Biosorbent Properties". Carbohydrate Polymers 2009, 78 (4), 894–901. https://doi.org/10.1016/j.carbpol.2009.07.025.