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Removal of Cd(II) from aqueous solutions using clarified sludge.
J Colloid Interface Sci. 2008 Sep 01; 325(1):48-56.JC

Abstract

Clarified sludge is a major waste generating during steel making process. In India and in most industrial countries, the use of clarified sludge as a road ballast and land filter has had a very long history. In present study, clarified sludge has been characterized and used for the removal of Cd(II) from aqueous solutions. The effect of pH, adsorbent dosage, adsorbate concentration, contact time and temperature on adsorption process was studied in batch experiments. Kinetics data were best described by pseudo-second order model. The effective diffusion co-efficient of Cd(II) is of the order of 10(-11) m(2)/s. The maximum uptake was 36.23 mg/g. The adsorption data can be well described by Langmuir isotherm. The result of the equilibrium studies showed that the solution pH was the governing factor affecting the adsorption. Mass transfer analysis was also carried out for the adsorption process. The thermodynamic studies indicated that the adsorption was spontaneous and exothermic in nature. The sorption energy calculated from Dubinin-Radushkevich isotherm indicated that the adsorption process is chemical in nature. Desorption as well as the application studies were carried out considering the economic viewpoint of wastewater treatment plant operations.

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Authors+Show Affiliations

Naiya TK
Department of Chemical Engineering, University of Calcutta, Kolkata 700 009, India.
Bhattacharya AK
No affiliation info available
Das SK
No affiliation info available

MeSH

AdsorptionCadmiumCations, DivalentHydrogen-Ion ConcentrationIndustrial WasteSewageSolutionsThermodynamicsTime FactorsWaste Disposal, FluidWaterWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18571663

Citation

Naiya, T K., et al. "Removal of Cd(II) From Aqueous Solutions Using Clarified Sludge." Journal of Colloid and Interface Science, vol. 325, no. 1, 2008, pp. 48-56.
Naiya TK, Bhattacharya AK, Das SK. Removal of Cd(II) from aqueous solutions using clarified sludge. J Colloid Interface Sci. 2008;325(1):48-56.
Naiya, T. K., Bhattacharya, A. K., & Das, S. K. (2008). Removal of Cd(II) from aqueous solutions using clarified sludge. Journal of Colloid and Interface Science, 325(1), 48-56. https://doi.org/10.1016/j.jcis.2008.06.003
Naiya TK, Bhattacharya AK, Das SK. Removal of Cd(II) From Aqueous Solutions Using Clarified Sludge. J Colloid Interface Sci. 2008 Sep 1;325(1):48-56. PubMed PMID: 18571663.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of Cd(II) from aqueous solutions using clarified sludge. AU - Naiya,T K, AU - Bhattacharya,A K, AU - Das,S K, Y1 - 2008/06/05/ PY - 2008/02/01/received PY - 2008/05/23/revised PY - 2008/06/02/accepted PY - 2008/6/24/pubmed PY - 2008/10/16/medline PY - 2008/6/24/entrez SP - 48 EP - 56 JF - Journal of colloid and interface science JO - J Colloid Interface Sci VL - 325 IS - 1 N2 - Clarified sludge is a major waste generating during steel making process. In India and in most industrial countries, the use of clarified sludge as a road ballast and land filter has had a very long history. In present study, clarified sludge has been characterized and used for the removal of Cd(II) from aqueous solutions. The effect of pH, adsorbent dosage, adsorbate concentration, contact time and temperature on adsorption process was studied in batch experiments. Kinetics data were best described by pseudo-second order model. The effective diffusion co-efficient of Cd(II) is of the order of 10(-11) m(2)/s. The maximum uptake was 36.23 mg/g. The adsorption data can be well described by Langmuir isotherm. The result of the equilibrium studies showed that the solution pH was the governing factor affecting the adsorption. Mass transfer analysis was also carried out for the adsorption process. The thermodynamic studies indicated that the adsorption was spontaneous and exothermic in nature. The sorption energy calculated from Dubinin-Radushkevich isotherm indicated that the adsorption process is chemical in nature. Desorption as well as the application studies were carried out considering the economic viewpoint of wastewater treatment plant operations. SN - 1095-7103 UR - https://www.unboundmedicine.com/medline/citation/18571663/Removal_of_Cd_II__from_aqueous_solutions_using_clarified_sludge_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9797(08)00734-0 DB - PRIME DP - Unbound Medicine ER -