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Kinetic and Thermodynamic Studies of Adsorption of Pb (II) by Using Ferrous Sulphide as an Adsorbent

D. Kamalakar, C. V. Subrahmanayam, P. Rohinikumar, L. Nageswara Rao

Abstract


Poisoning of lead is causing a serious threat to the environment. In the present study the adsorption behaviour of lead was studied in detail by ferrous sulphide in granular form. Ferrous sulphide has the magnetic properties and makes it a better candidate for lead removal. Batch adsorption experiments were carried out by varying different process parameters such as contact time, adsorbent dose, pH, and temperature. Lead adsorption by ferrous sulphide was found to be highly pH sensitive. Maximum lead was adsorbed at around pH 6.8. Study of temperature effect on lead adsorption confirmed the endothermic nature of the process. Other thermodynamic properties were also calculated and found that physical adsorption was dominant with activation energy of 213.254 kJ/mol. Kinetic study revealed that the pseudo second order model was followed by the adsorption process having regression coefficient (R2) 0.99.

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Amitai Y., Graef J.W., Brown M.J., et al. Hazards of ‘deleading’ homes of children with lead poisoning,” Am J Dis Child. 1987; 141: 758–60p. [2] Amitai Y., Brown M.J., Graef J.W., et al. Residential deleading: effects on the blood lead levels of leadpoisoned children, Pediatrics. 1991; 88(5): 893–7p. [3] Aschengrau A., Beiser A., Bellinger D., et al. The impact of soil lead abatement on urban children's blood lead levels: phase II results from the Boston lead-in-soil demonstration project, Environ Res. 1994; 67: 125– 48p. [4] Aschengrau A., Hardy S., Mackey P., et al. The impact of low technology lead hazard reduction activities among children with mildly elevated blood lead levels, Environ Res. 1998; 79: 41–50p. [5] ATSDR. “Toxicological Profile for Lead” Final Report of the Agency for

Toxic Substances and Disease Registry. Public Health Service, U.S. Department of Health and Human Services, 1993. [6] Barry P.S.I., Mossman D.B. Lead concentration in human tissues, Br J Ind Med. 1970; 27: 339–51p. [7] Barry P.S.I. A comparison of concentrations of lead in human tissues, Br J Ind Med. 1975; 32: 119– 39p. [8] Barry P.S.I. Concentrations of lead in the tissues of children, Br J Ind Med. 1981; 38: 61–71p. [9] Batschelet E., Brand L., Steiner A. On the kinetics of lead in the human body, J Math Biol. 1979; 8: 15–23p. [10] Battelle Memorial Institute. Reported Effectiveness Derived from Methods for LeadN Hazard Intervention. Memorandum to U.S. EPA, Office of Pollution Prevention and Toxics, prepared under Contract No. 68-D20139, 1994. [11] Bellinger D., Leviton A., Waternaux C., et al. Longitudinal analysis of prenatal and postnatal lead exposure and early cognitive development, N Engl J Med. 1987; 316: 1037–43p. [12] Bert J.L., van Dusen L.J., Grace J.R. A generalized model for the prediction of lead body burdens, Environ Res. 1989; 48: 117–27p. [13] Buckley T.J. Selection criteria for CLEARS relating to blood-Pb, Personal Commun Brad Schultz. 1996. [14] Buckley, T.J., (1996) “Selection Criteria for CLEARS Relating to Blood-Pb.” Personal Communication to Brad Schultz. March 22, 1996. [15] Buckley T.J. Significant Findings from the Children’s Lead Exposure and Reduction Study (CLEARS). U.S. EPA Memorandum. 1996. [16] Burgoon D.A., Rust S.W., Schultz B.D. A summary of studies addressing the efficacy of lead abatement, Draft Proceedings for ASTM Lead in Paint, Soil, and Dust Conference. 1993. [17] Calder I.C., Maynard E.J., Heyworth J.S. Port pirie lead abatement program, Environ Geochem Health. 1992; 16(3/4): 137–45p. [18] Centers for Disease Control. Screening Young Children for Lead Poisoning: Guidance for State and Local Public Health Officials. Atlanta: U.S. Department of Health and Human Services, 1997.

Copley C. East St. Louis Lead Dust Reduction in Homes of At-Risk Children. Report on Grant NE995974-01 to U.S. Environmental Protection Agency. 1995. [20] Iqbal M., Edyvean R. Biosorption of lead, copper and zinc ions on loofa sponge immobilized biomass of Phanerochaete chrysosporium, Miner Eng. 2004; 17: 217–23p.


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