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Equilibrium and kinetic studies of adsorption of Cd(II) from aqueous solution using modified corn stalk.
J Hazard Mater. 2010 Apr 15; 176(1-3):650-6.JH

Abstract

This paper describes the adsorption of cadmium ions from aqueous solution using acrylonitrile (AN)-modified corn stalk (AMCS). AMCS was characterized by elemental analysis, scanning electron microscopy, surface area and porosity analyzer, Fourier transform infrared and solid-state CP/MAS (13)C NMR spectra, and then used to evaluate the adsorption capacity in different pH values, adsorption isotherm, kinetics and thermodynamics in batch experiments. The results showed that AMCS is found to be an effective adsorbent because of its pore size and functional groups (-CN). The pH of 7.0 was an optimal pH for removal of Cd(II) ion and the Langmuir model provides a better fit to the equilibrium data than the Freundlich model, showing a maximum uptake of 12.73 mg g(-1), compared to raw corn stalk (RCS) (3.39 mg g(-1)). Analysis indicated that pseudo-second-order kinetics controlled the adsorption rate. The activation energy (E(a)) was 9.43 kJ mol(-1). Thermodynamic parameters such as DeltaG, DeltaH and DeltaS were also evaluated to predict the nature of adsorption process.

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Authors+Show Affiliations

Zheng L
College of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006, PR China.
Dang Z
No affiliation info available
Yi X
No affiliation info available
Zhang H
No affiliation info available

MeSH

AdsorptionCadmiumKineticsSolutionsWater Pollutants, ChemicalWater PurificationXylemZea mays

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

20007006

Citation

Zheng, Liuchun, et al. "Equilibrium and Kinetic Studies of Adsorption of Cd(II) From Aqueous Solution Using Modified Corn Stalk." Journal of Hazardous Materials, vol. 176, no. 1-3, 2010, pp. 650-6.
Zheng L, Dang Z, Yi X, et al. Equilibrium and kinetic studies of adsorption of Cd(II) from aqueous solution using modified corn stalk. J Hazard Mater. 2010;176(1-3):650-6.
Zheng, L., Dang, Z., Yi, X., & Zhang, H. (2010). Equilibrium and kinetic studies of adsorption of Cd(II) from aqueous solution using modified corn stalk. Journal of Hazardous Materials, 176(1-3), 650-6. https://doi.org/10.1016/j.jhazmat.2009.11.081
Zheng L, et al. Equilibrium and Kinetic Studies of Adsorption of Cd(II) From Aqueous Solution Using Modified Corn Stalk. J Hazard Mater. 2010 Apr 15;176(1-3):650-6. PubMed PMID: 20007006.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Equilibrium and kinetic studies of adsorption of Cd(II) from aqueous solution using modified corn stalk. AU - Zheng,Liuchun, AU - Dang,Zhi, AU - Yi,Xiaoyun, AU - Zhang,Hui, Y1 - 2009/12/16/ PY - 2009/06/09/received PY - 2009/11/13/revised PY - 2009/11/16/accepted PY - 2009/12/17/entrez PY - 2009/12/17/pubmed PY - 2010/5/19/medline SP - 650 EP - 6 JF - Journal of hazardous materials JO - J Hazard Mater VL - 176 IS - 1-3 N2 - This paper describes the adsorption of cadmium ions from aqueous solution using acrylonitrile (AN)-modified corn stalk (AMCS). AMCS was characterized by elemental analysis, scanning electron microscopy, surface area and porosity analyzer, Fourier transform infrared and solid-state CP/MAS (13)C NMR spectra, and then used to evaluate the adsorption capacity in different pH values, adsorption isotherm, kinetics and thermodynamics in batch experiments. The results showed that AMCS is found to be an effective adsorbent because of its pore size and functional groups (-CN). The pH of 7.0 was an optimal pH for removal of Cd(II) ion and the Langmuir model provides a better fit to the equilibrium data than the Freundlich model, showing a maximum uptake of 12.73 mg g(-1), compared to raw corn stalk (RCS) (3.39 mg g(-1)). Analysis indicated that pseudo-second-order kinetics controlled the adsorption rate. The activation energy (E(a)) was 9.43 kJ mol(-1). Thermodynamic parameters such as DeltaG, DeltaH and DeltaS were also evaluated to predict the nature of adsorption process. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/20007006/Equilibrium_and_kinetic_studies_of_adsorption_of_Cd_II__from_aqueous_solution_using_modified_corn_stalk_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(09)01879-2 DB - PRIME DP - Unbound Medicine ER -