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Removal of cadmium (II) from aqueous solutions by adsorption on agricultural waste biomass.
J Hazard Mater. 2008 Jun 15; 154(1-3):1149-57.JH

Abstract

This paper reports the feasibility of using various agricultural residues viz. sugarcane bagasse (SCB), maize corncob (MCC) and Jatropha oil cake (JOC) for the removal of Cd(II) from aqueous solution under different experimental conditions. Effect of various process parameters, viz., initial metal ion concentration, pH, and adsorbent dose has been studied for the removal of cadmium. Batch experiments were carried out at various pH (2-7), adsorbent dose (250-2000 mg), Cd(II) concentration (5-500 mg l(-1)) for a contact time of 60 min. The maximum cadmium removal capacity was shown by JOC (99.5%). The applicability of Langmuir and Freundlich isotherm suggests the formation of monolayer of Cd(II) ions onto the outer surface of the adsorbents. Maximum metal removal was observed at pH 6.0 with a contact time of 60 min at stirring speed of 250 rpm with an adsorbent dose of 20 g l(-1) of the test solution. The maximum adsorption of cadmium (II) metal ions was observed at pH 6 for all the adsorbents viz; 99.5%, 99% and 85% for JOC, MCC, and SCB, respectively. Order of Cd(II) removal by various biosorbents was JOC>MCC>SCB. JOC may be an alternative biosorbent for the removal of Cd(II) ions from the aqueous solution. FT-IR spectra of the adsorbents (before use and after exhaustion) were recorded to explore number and position of the functional groups available for the binding of Cd(II) ions on to studied adsorbents. These results can be helpful in designing a batch mode system for the removal of cadmium from dilute wastewaters.

Authors+Show Affiliations

Garg U
Department of Chemistry, Sant Longowal Institute of Engineering and Technology, Longowal 148106, Punjab, India.
Kaur MP
No affiliation info available
Jawa GK
No affiliation info available
Sud D
No affiliation info available
Garg VK
No affiliation info available

MeSH

AdsorptionAgricultureCadmiumCelluloseDiffusionHydrogen-Ion ConcentrationJatrophaSolutionsWaste Disposal, FluidWaste ProductsWater Pollutants, ChemicalWater PurificationZea mays

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18162298

Citation

Garg, Umesh, et al. "Removal of Cadmium (II) From Aqueous Solutions By Adsorption On Agricultural Waste Biomass." Journal of Hazardous Materials, vol. 154, no. 1-3, 2008, pp. 1149-57.
Garg U, Kaur MP, Jawa GK, et al. Removal of cadmium (II) from aqueous solutions by adsorption on agricultural waste biomass. J Hazard Mater. 2008;154(1-3):1149-57.
Garg, U., Kaur, M. P., Jawa, G. K., Sud, D., & Garg, V. K. (2008). Removal of cadmium (II) from aqueous solutions by adsorption on agricultural waste biomass. Journal of Hazardous Materials, 154(1-3), 1149-57.
Garg U, et al. Removal of Cadmium (II) From Aqueous Solutions By Adsorption On Agricultural Waste Biomass. J Hazard Mater. 2008 Jun 15;154(1-3):1149-57. PubMed PMID: 18162298.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of cadmium (II) from aqueous solutions by adsorption on agricultural waste biomass. AU - Garg,Umesh, AU - Kaur,M P, AU - Jawa,G K, AU - Sud,Dhiraj, AU - Garg,V K, Y1 - 2007/11/19/ PY - 2007/10/04/received PY - 2007/11/03/revised PY - 2007/11/06/accepted PY - 2007/12/29/pubmed PY - 2008/7/30/medline PY - 2007/12/29/entrez SP - 1149 EP - 57 JF - Journal of hazardous materials JO - J Hazard Mater VL - 154 IS - 1-3 N2 - This paper reports the feasibility of using various agricultural residues viz. sugarcane bagasse (SCB), maize corncob (MCC) and Jatropha oil cake (JOC) for the removal of Cd(II) from aqueous solution under different experimental conditions. Effect of various process parameters, viz., initial metal ion concentration, pH, and adsorbent dose has been studied for the removal of cadmium. Batch experiments were carried out at various pH (2-7), adsorbent dose (250-2000 mg), Cd(II) concentration (5-500 mg l(-1)) for a contact time of 60 min. The maximum cadmium removal capacity was shown by JOC (99.5%). The applicability of Langmuir and Freundlich isotherm suggests the formation of monolayer of Cd(II) ions onto the outer surface of the adsorbents. Maximum metal removal was observed at pH 6.0 with a contact time of 60 min at stirring speed of 250 rpm with an adsorbent dose of 20 g l(-1) of the test solution. The maximum adsorption of cadmium (II) metal ions was observed at pH 6 for all the adsorbents viz; 99.5%, 99% and 85% for JOC, MCC, and SCB, respectively. Order of Cd(II) removal by various biosorbents was JOC>MCC>SCB. JOC may be an alternative biosorbent for the removal of Cd(II) ions from the aqueous solution. FT-IR spectra of the adsorbents (before use and after exhaustion) were recorded to explore number and position of the functional groups available for the binding of Cd(II) ions on to studied adsorbents. These results can be helpful in designing a batch mode system for the removal of cadmium from dilute wastewaters. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18162298/Removal_of_cadmium__II__from_aqueous_solutions_by_adsorption_on_agricultural_waste_biomass_ DB - PRIME DP - Unbound Medicine ER -