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Removal of hexavalent chromium from aqueous solutions by D301, D314 and D354 anion-exchange resins.
J Hazard Mater. 2009 Jan 30; 161(2-3):900-6.JH

Abstract

Removal of hexavalent chromium from electroplating industry wastewater is obligatory in order to avoid pollution. Batch shaking experiments were carried out to evaluate the adsorption capacity of resins (D301, D314 and D354) in the removal of chromium from aqueous solutions. Varying experimental conditions were studied, including Cr(6+) concentrations, resin amounts, initial pH, contact time and temperatures. The ion-exchange process, which is pH-dependent, indicated the maximum removal of Cr(6+) in the pH range of 1-5 for an initial concentration 100 ppm of Cr(6+). It was found that more than 99.4% of the removal was achieved under optimal conditions. High adsorption rates of chromium for the three resins were observed at the onset, and then plateau values were gradually reached within 30 min. The experimental results obtained at various concentrations (27+/-1 degrees C) showed that the adsorption pattern on the resins have followed Langmuir isotherms and the calculated maximum sorption capacities of D301, D314 and D354 were 152.52, 120.48 and 156.25mg/g, respectively. The thermodynamic parameters (free energy change DeltaG, enthalpy change DeltaS and entropy change DeltaH) for the sorption have been evaluated. It was also found that the adsorption of chromium on these anion-exchange resins follows first-order reversible kinetics.

Authors+Show Affiliations

School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China. eesshth@mail.sysu.edu.cnNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

18513867

Citation

Shi, Taihong, et al. "Removal of Hexavalent Chromium From Aqueous Solutions By D301, D314 and D354 Anion-exchange Resins." Journal of Hazardous Materials, vol. 161, no. 2-3, 2009, pp. 900-6.
Shi T, Wang Z, Liu Y, et al. Removal of hexavalent chromium from aqueous solutions by D301, D314 and D354 anion-exchange resins. J Hazard Mater. 2009;161(2-3):900-6.
Shi, T., Wang, Z., Liu, Y., Jia, S., & Changming, D. (2009). Removal of hexavalent chromium from aqueous solutions by D301, D314 and D354 anion-exchange resins. Journal of Hazardous Materials, 161(2-3), 900-6. https://doi.org/10.1016/j.jhazmat.2008.04.041
Shi T, et al. Removal of Hexavalent Chromium From Aqueous Solutions By D301, D314 and D354 Anion-exchange Resins. J Hazard Mater. 2009 Jan 30;161(2-3):900-6. PubMed PMID: 18513867.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Removal of hexavalent chromium from aqueous solutions by D301, D314 and D354 anion-exchange resins. AU - Shi,Taihong, AU - Wang,Zhuochao, AU - Liu,Yang, AU - Jia,Shiguo, AU - Changming,Du, Y1 - 2008/04/20/ PY - 2007/11/21/received PY - 2008/03/05/revised PY - 2008/04/12/accepted PY - 2008/6/3/pubmed PY - 2009/3/4/medline PY - 2008/6/3/entrez SP - 900 EP - 6 JF - Journal of hazardous materials JO - J Hazard Mater VL - 161 IS - 2-3 N2 - Removal of hexavalent chromium from electroplating industry wastewater is obligatory in order to avoid pollution. Batch shaking experiments were carried out to evaluate the adsorption capacity of resins (D301, D314 and D354) in the removal of chromium from aqueous solutions. Varying experimental conditions were studied, including Cr(6+) concentrations, resin amounts, initial pH, contact time and temperatures. The ion-exchange process, which is pH-dependent, indicated the maximum removal of Cr(6+) in the pH range of 1-5 for an initial concentration 100 ppm of Cr(6+). It was found that more than 99.4% of the removal was achieved under optimal conditions. High adsorption rates of chromium for the three resins were observed at the onset, and then plateau values were gradually reached within 30 min. The experimental results obtained at various concentrations (27+/-1 degrees C) showed that the adsorption pattern on the resins have followed Langmuir isotherms and the calculated maximum sorption capacities of D301, D314 and D354 were 152.52, 120.48 and 156.25mg/g, respectively. The thermodynamic parameters (free energy change DeltaG, enthalpy change DeltaS and entropy change DeltaH) for the sorption have been evaluated. It was also found that the adsorption of chromium on these anion-exchange resins follows first-order reversible kinetics. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18513867/Removal_of_hexavalent_chromium_from_aqueous_solutions_by_D301_D314_and_D354_anion_exchange_resins_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)00574-8 DB - PRIME DP - Unbound Medicine ER -