Tags

Type your tag names separated by a space and hit enter

Sorption of Cr(VI) ions on two Lewatit-anion exchange resins and their quantitative determination using UV-visible spectrophotometer.
J Hazard Mater. 2009 Apr 15; 163(1):448-53.JH

Abstract

The sorption of Cr(VI) from aqueous solutions with macroporous resins which contain quarternary amine groups (Lewatit MP 64 and Lewatit MP 500) was studied at varying Cr(VI) concentration, adsorbent dose, pH, contact time and temperature. Batch shaking sorption experiments were carried out to evaluate the performance of Lewatit MP 64 and Lewatit MP 500 anion exchange resins in the removal of Cr(VI) from aqueous solutions. The concentration of Cr(VI) in aqueous solution was determined by UV-visible spectrophotometer. The ion exchange process, which is dependent on pH, showed maximum removal of Cr(VI) in the pH range 3-7 for an initial Cr(VI) concentration of 1x10(-3) M. The optimum pH for Cr(VI) adsorption was found as 5.0 for Lewatit MP 64 and 6.0 for Lewatit MP 500. The maximum Cr(VI) adsorption at pH 5.0 is 0.40 and 0.41 mmol/g resin for Lewatit MP 64 and Lewatit MP 500 anion exchangers, respectively. The maximum chromium sorption occurred at approximately 60 min for Lewatit MP 64 and 75 min for Lewatit MP 500. The suitability of the Freundlich and Langmuir adsorption models was also investigated for each chromium-sorbent system. The uptake of Cr(VI) by the anion exchange resins was reversible and so it has good potential for the removal of Cr(VI) from aqueous solutions. Both ion exchangers had high bonding constants but Lewatit MP 500 showed stronger binding. The rise in the temperature caused a slight decrease in the value of the equilibrium constant (K(c)) for the sorption of Cr(VI) ion.

Authors+Show Affiliations

Department of Chemical Engineering, Selcuk University, Campus, 42031 Konya, Turkey. erolpehlivan@gmail.comNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

18692308

Citation

Pehlivan, E, and S Cetin. "Sorption of Cr(VI) Ions On Two Lewatit-anion Exchange Resins and Their Quantitative Determination Using UV-visible Spectrophotometer." Journal of Hazardous Materials, vol. 163, no. 1, 2009, pp. 448-53.
Pehlivan E, Cetin S. Sorption of Cr(VI) ions on two Lewatit-anion exchange resins and their quantitative determination using UV-visible spectrophotometer. J Hazard Mater. 2009;163(1):448-53.
Pehlivan, E., & Cetin, S. (2009). Sorption of Cr(VI) ions on two Lewatit-anion exchange resins and their quantitative determination using UV-visible spectrophotometer. Journal of Hazardous Materials, 163(1), 448-53. https://doi.org/10.1016/j.jhazmat.2008.06.115
Pehlivan E, Cetin S. Sorption of Cr(VI) Ions On Two Lewatit-anion Exchange Resins and Their Quantitative Determination Using UV-visible Spectrophotometer. J Hazard Mater. 2009 Apr 15;163(1):448-53. PubMed PMID: 18692308.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sorption of Cr(VI) ions on two Lewatit-anion exchange resins and their quantitative determination using UV-visible spectrophotometer. AU - Pehlivan,E, AU - Cetin,S, Y1 - 2008/07/05/ PY - 2008/05/06/received PY - 2008/06/27/revised PY - 2008/06/27/accepted PY - 2008/8/12/pubmed PY - 2009/4/3/medline PY - 2008/8/12/entrez SP - 448 EP - 53 JF - Journal of hazardous materials JO - J Hazard Mater VL - 163 IS - 1 N2 - The sorption of Cr(VI) from aqueous solutions with macroporous resins which contain quarternary amine groups (Lewatit MP 64 and Lewatit MP 500) was studied at varying Cr(VI) concentration, adsorbent dose, pH, contact time and temperature. Batch shaking sorption experiments were carried out to evaluate the performance of Lewatit MP 64 and Lewatit MP 500 anion exchange resins in the removal of Cr(VI) from aqueous solutions. The concentration of Cr(VI) in aqueous solution was determined by UV-visible spectrophotometer. The ion exchange process, which is dependent on pH, showed maximum removal of Cr(VI) in the pH range 3-7 for an initial Cr(VI) concentration of 1x10(-3) M. The optimum pH for Cr(VI) adsorption was found as 5.0 for Lewatit MP 64 and 6.0 for Lewatit MP 500. The maximum Cr(VI) adsorption at pH 5.0 is 0.40 and 0.41 mmol/g resin for Lewatit MP 64 and Lewatit MP 500 anion exchangers, respectively. The maximum chromium sorption occurred at approximately 60 min for Lewatit MP 64 and 75 min for Lewatit MP 500. The suitability of the Freundlich and Langmuir adsorption models was also investigated for each chromium-sorbent system. The uptake of Cr(VI) by the anion exchange resins was reversible and so it has good potential for the removal of Cr(VI) from aqueous solutions. Both ion exchangers had high bonding constants but Lewatit MP 500 showed stronger binding. The rise in the temperature caused a slight decrease in the value of the equilibrium constant (K(c)) for the sorption of Cr(VI) ion. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18692308/Sorption_of_Cr_VI__ions_on_two_Lewatit_anion_exchange_resins_and_their_quantitative_determination_using_UV_visible_spectrophotometer_ DB - PRIME DP - Unbound Medicine ER -