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The sorption of lead(II) ions on rice husk ash.
J Hazard Mater. 2009 Apr 30; 163(2-3):1254-64.JH

Abstract

Present study deals with the adsorption of Pb(II) from aqueous solution on rice husk ash. Rice husk is a by-product generally obtained from rice mill. Rice husk ash is a solid obtained after burning of rice husk. Batch studies were performed to evaluate the influences of various experimental parameters like pH, initial concentration, adsorbent dosage, contact time and the effect of temperature. Optimum conditions for Pb(II) removal were found to be pH 5, adsorbent dosage 5 g/L of solution and equilibrium time 1h. Adsorption of Pb(II) followed pseudo-second-order kinetics. The effective diffusion coefficient is of the order of 10(-10)m(2)/s. The equilibrium adsorption isotherm was better described by Freuindlich adsorption isotherm model. The adsorption capacity (q(max)) of rice husk ash for Pb(II) ions in terms of monolayer adsorption was 91.74 mg/g. The change of entropy (DeltaS(0)) and enthalpy (Delta H(0)) were estimated at 0.132 kJ/(mol K) and 28.923 kJ/mol respectively. The negative value of Gibbs free energy (Delta G(0)) indicates feasible and spontaneous adsorption of Pb(II) on rice husk ash. The value of the adsorption energy (E), calculated using Dubinin-Radushkevich isotherm, was 9.901 kJ/mol and it indicated that the adsorption process was chemical in nature. Application study was also carried out to find the suitability of the process in waste water treatment operation.

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Authors+Show Affiliations

Naiya TK
Department of Chemical Engineering, University of Calcutta, 92 A P C Road, Kolkata 700009, India.
Bhattacharya AK
No affiliation info available
Mandal S
No affiliation info available
Das SK
No affiliation info available

MeSH

AdsorptionHydrogen-Ion ConcentrationKineticsLeadOryzaTemperatureTime FactorsWater PollutantsWater Purification

Pub Type(s)

Evaluation Study
Journal Article

Language

eng

PubMed ID

18783880

Citation

Naiya, Tarun Kumar, et al. "The Sorption of lead(II) Ions On Rice Husk Ash." Journal of Hazardous Materials, vol. 163, no. 2-3, 2009, pp. 1254-64.
Naiya TK, Bhattacharya AK, Mandal S, et al. The sorption of lead(II) ions on rice husk ash. J Hazard Mater. 2009;163(2-3):1254-64.
Naiya, T. K., Bhattacharya, A. K., Mandal, S., & Das, S. K. (2009). The sorption of lead(II) ions on rice husk ash. Journal of Hazardous Materials, 163(2-3), 1254-64. https://doi.org/10.1016/j.jhazmat.2008.07.119
Naiya TK, et al. The Sorption of lead(II) Ions On Rice Husk Ash. J Hazard Mater. 2009 Apr 30;163(2-3):1254-64. PubMed PMID: 18783880.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The sorption of lead(II) ions on rice husk ash. AU - Naiya,Tarun Kumar, AU - Bhattacharya,Ashim Kumar, AU - Mandal,Sailendranath, AU - Das,Sudip Kumar, Y1 - 2008/08/03/ PY - 2008/03/06/received PY - 2008/06/21/revised PY - 2008/07/22/accepted PY - 2008/9/12/pubmed PY - 2009/4/14/medline PY - 2008/9/12/entrez SP - 1254 EP - 64 JF - Journal of hazardous materials JO - J Hazard Mater VL - 163 IS - 2-3 N2 - Present study deals with the adsorption of Pb(II) from aqueous solution on rice husk ash. Rice husk is a by-product generally obtained from rice mill. Rice husk ash is a solid obtained after burning of rice husk. Batch studies were performed to evaluate the influences of various experimental parameters like pH, initial concentration, adsorbent dosage, contact time and the effect of temperature. Optimum conditions for Pb(II) removal were found to be pH 5, adsorbent dosage 5 g/L of solution and equilibrium time 1h. Adsorption of Pb(II) followed pseudo-second-order kinetics. The effective diffusion coefficient is of the order of 10(-10)m(2)/s. The equilibrium adsorption isotherm was better described by Freuindlich adsorption isotherm model. The adsorption capacity (q(max)) of rice husk ash for Pb(II) ions in terms of monolayer adsorption was 91.74 mg/g. The change of entropy (DeltaS(0)) and enthalpy (Delta H(0)) were estimated at 0.132 kJ/(mol K) and 28.923 kJ/mol respectively. The negative value of Gibbs free energy (Delta G(0)) indicates feasible and spontaneous adsorption of Pb(II) on rice husk ash. The value of the adsorption energy (E), calculated using Dubinin-Radushkevich isotherm, was 9.901 kJ/mol and it indicated that the adsorption process was chemical in nature. Application study was also carried out to find the suitability of the process in waste water treatment operation. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/18783880/The_sorption_of_lead_II__ions_on_rice_husk_ash_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)01141-2 DB - PRIME DP - Unbound Medicine ER -