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Removal of copper and cadmium from the aqueous solutions by activated carbon derived from Ceiba pentandra hulls.
J Hazard Mater. 2006 Feb 28; 129(1-3):123-9.JH

Abstract

Activated carbon prepared from Ceiba pentandra hulls, an agricultural solid waste by-product, for the removal of copper and cadmium from aqueous solutions has been studied. Parameters such as equilibrium time, effect of pH and adsorbent dose on removal were studied. The adsorbent exhibited good sorption potential for copper and cadmium at pH 6.0. C=O and S=O functional groups present on the carbon surface were the adsorption sites to remove metal ions from solution. The experimental data was analysed by both Freundlich and Langmuir isotherm models. The maximum adsorption capacity of copper and cadmium was calculated from Langmuir isotherm and found to be 20.8 and 19.5 mg/g, respectively. The sorption kinetics of the copper and cadmium have been analysed by Lagergren pseudo-first-order and pseudo-second-order kinetic models. The desorption studies were carried out using dilute hydrochloric acid solution and the effect of HCl concentration on desorption was also studied. Maximum desorption of 90% for copper and 88% for cadmium occurred with 0.2 M HCl.

Authors+Show Affiliations

Rao MM
Department of Chemistry, Sri Venkateswara University, Tirupati 517502, Andhra Pradesh, India.
Ramesh A
No affiliation info available
Rao GP
No affiliation info available
Seshaiah K
No affiliation info available

MeSH

AdsorptionAgricultureCadmiumCarbonCeibaCopperSeedsWaste ProductsWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16191464

Citation

Rao, M Madhava, et al. "Removal of Copper and Cadmium From the Aqueous Solutions By Activated Carbon Derived From Ceiba Pentandra Hulls." Journal of Hazardous Materials, vol. 129, no. 1-3, 2006, pp. 123-9.
Rao MM, Ramesh A, Rao GP, et al. Removal of copper and cadmium from the aqueous solutions by activated carbon derived from Ceiba pentandra hulls. J Hazard Mater. 2006;129(1-3):123-9.
Rao, M. M., Ramesh, A., Rao, G. P., & Seshaiah, K. (2006). Removal of copper and cadmium from the aqueous solutions by activated carbon derived from Ceiba pentandra hulls. Journal of Hazardous Materials, 129(1-3), 123-9.
Rao MM, et al. Removal of Copper and Cadmium From the Aqueous Solutions By Activated Carbon Derived From Ceiba Pentandra Hulls. J Hazard Mater. 2006 Feb 28;129(1-3):123-9. PubMed PMID: 16191464.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of copper and cadmium from the aqueous solutions by activated carbon derived from Ceiba pentandra hulls. AU - Rao,M Madhava, AU - Ramesh,A, AU - Rao,G Purna Chandra, AU - Seshaiah,K, Y1 - 2005/09/26/ PY - 2005/07/08/received PY - 2005/08/16/revised PY - 2005/08/19/accepted PY - 2005/9/30/pubmed PY - 2006/9/14/medline PY - 2005/9/30/entrez SP - 123 EP - 9 JF - Journal of hazardous materials JO - J Hazard Mater VL - 129 IS - 1-3 N2 - Activated carbon prepared from Ceiba pentandra hulls, an agricultural solid waste by-product, for the removal of copper and cadmium from aqueous solutions has been studied. Parameters such as equilibrium time, effect of pH and adsorbent dose on removal were studied. The adsorbent exhibited good sorption potential for copper and cadmium at pH 6.0. C=O and S=O functional groups present on the carbon surface were the adsorption sites to remove metal ions from solution. The experimental data was analysed by both Freundlich and Langmuir isotherm models. The maximum adsorption capacity of copper and cadmium was calculated from Langmuir isotherm and found to be 20.8 and 19.5 mg/g, respectively. The sorption kinetics of the copper and cadmium have been analysed by Lagergren pseudo-first-order and pseudo-second-order kinetic models. The desorption studies were carried out using dilute hydrochloric acid solution and the effect of HCl concentration on desorption was also studied. Maximum desorption of 90% for copper and 88% for cadmium occurred with 0.2 M HCl. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/16191464/Removal_of_copper_and_cadmium_from_the_aqueous_solutions_by_activated_carbon_derived_from_Ceiba_pentandra_hulls_ DB - PRIME DP - Unbound Medicine ER -