Equilibrium sorption studies for Cu2+ and Pb2+metal ions on three different biomasses
Uma M. K. Nagpal1 * and Hassan Rezaei2
1
Department of Geology,
University of Pune,
Pune,
India
2
Department of Environmental Sciences,
University of Pune,
Pune,
India
http://dx.doi.org/10.12944/CWE.5.2.04
Presence of heavy metals in the aquatic system is posing serious problems. The aim of this study was to utilize the locally available agricultural waste materials for scavenging these heavy metals. In the present study, the biomass generated from the dried leaves of Terminalia Catappa, Dalbergia latifolia and Ficus benghalensis was used for evaluating the biosorption characteristics of Pb and Cu ions in aqueous solutions. Batch adsorption experiments were performed on these leaves and it was found that the amount of metal ions adsorbed increased with the increase in the initial metal ion concentration. The equilibrium sorption capacity for 800 mg l-1 metal solution was 77.55, 59.35 and 19.35 mg g-1 respectively for these three leaves. Out of the two isotherms tried Langmuir gave the best fit with r2 values ranging from 0.96 to 0.98. Terminalia Catappa leaves were found to be best sorbent than Dalbergia latifolia followed by Ficus benghalensis leaves which showed least sorption. From the leaf composition from XRF, Ion exchange also could be one of the options for studying the mechanism of adsorption of these cations on these leaves. Comparing with other similar studies these were found to be the excellent adsorbents and can be successfully used by Industries for heavy metal removal
Copy the following to cite this article:
Nagpal M. K. U, Rezaei H. Equilibrium sorption studies for Cu2+ and Pb2+metal ions on three different biomasses. Curr World Environ 2010;5(2):243-251 DOI:http://dx.doi.org/10.12944/CWE.5.2.04
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Nagpal M. K. U, Rezaei H. Equilibrium sorption studies for Cu2+ and Pb2+metal ions on three different biomasses. Curr World Environ 2010;5(2):243-251. Available from: http://www.cwejournal.org/?p=1185
