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Adsorption characteristics of ammonium ion by zeolite 13X.
J Hazard Mater. 2008 Oct 30; 158(2-3):577-84.JH

Abstract

With synthetic wastewater, lab-scale batch experiments and column experiments were carried out to investigate the adsorption characteristics of ammonium ion by zeolite 13X which is a hydrothermally synthetic byproduct accompanied with preparation of potassium carbonate from insoluble potash ores. The Langmuir and Freundlich models were applied to describe the equilibrium isotherms for ammonium ion uptake and the Langmuir model agrees very well with experimental data. Thermodynamic parameters including changes in the standard free energy (DeltaG(0)), enthalpy (DeltaH(0)) and entropy (DeltaS(0)) were also calculated. The results show that the exchange process of ammonium ion by zeolite 13X is spontaneous and exothermic. The pseudo second-order kinetic model was found to provide excellent kinetic data fitting (R(2)>0.999). The effects of relevant dynamic parameters, such as influent flow rate, adsorbent bed height and initial ammonium ion concentration on the adsorption of ammonium ion were examined, respectively. The Thomas model was applied to predict the breakthrough curves and to determine the characteristic parameters of column useful for process design and was found suitable for describing the adsorption process of the dynamic behavior of the zeolite 13X column. The total adsorbed quantities, equilibrium uptakes and total removal percents of ammonium ion related to the effluent volumes were determined by evaluating the breakthrough curves obtained at different conditions.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Zheng H
National Laboratory of Mineral Materials, China University of Geosciences, Beijing 100083, PR China. zhengh@cugb.edu.cn
Han L
No affiliation info available
Ma H
No affiliation info available
Zheng Y
No affiliation info available
Zhang H
No affiliation info available
Liu D
No affiliation info available
Liang S
No affiliation info available

MeSH

AdsorptionAnionsKineticsModels, ChemicalQuaternary Ammonium CompoundsThermodynamicsZeolites

Pub Type(s)

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

Language

eng

PubMed ID

18359556

Citation

Zheng, Hong, et al. "Adsorption Characteristics of Ammonium Ion By Zeolite 13X." Journal of Hazardous Materials, vol. 158, no. 2-3, 2008, pp. 577-84.
Zheng H, Han L, Ma H, et al. Adsorption characteristics of ammonium ion by zeolite 13X. J Hazard Mater. 2008;158(2-3):577-84.
Zheng, H., Han, L., Ma, H., Zheng, Y., Zhang, H., Liu, D., & Liang, S. (2008). Adsorption characteristics of ammonium ion by zeolite 13X. Journal of Hazardous Materials, 158(2-3), 577-84. https://doi.org/10.1016/j.jhazmat.2008.01.115
Zheng H, et al. Adsorption Characteristics of Ammonium Ion By Zeolite 13X. J Hazard Mater. 2008 Oct 30;158(2-3):577-84. PubMed PMID: 18359556.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Adsorption characteristics of ammonium ion by zeolite 13X. AU - Zheng,Hong, AU - Han,Lijie, AU - Ma,Hongwen, AU - Zheng,Yan, AU - Zhang,Hongmei, AU - Liu,Donghong, AU - Liang,Shuping, Y1 - 2008/02/17/ PY - 2007/09/12/received PY - 2008/01/30/revised PY - 2008/01/30/accepted PY - 2008/3/25/pubmed PY - 2009/1/3/medline PY - 2008/3/25/entrez SP - 577 EP - 84 JF - Journal of hazardous materials JO - J Hazard Mater VL - 158 IS - 2-3 N2 - With synthetic wastewater, lab-scale batch experiments and column experiments were carried out to investigate the adsorption characteristics of ammonium ion by zeolite 13X which is a hydrothermally synthetic byproduct accompanied with preparation of potassium carbonate from insoluble potash ores. The Langmuir and Freundlich models were applied to describe the equilibrium isotherms for ammonium ion uptake and the Langmuir model agrees very well with experimental data. Thermodynamic parameters including changes in the standard free energy (DeltaG(0)), enthalpy (DeltaH(0)) and entropy (DeltaS(0)) were also calculated. The results show that the exchange process of ammonium ion by zeolite 13X is spontaneous and exothermic. The pseudo second-order kinetic model was found to provide excellent kinetic data fitting (R(2)>0.999). The effects of relevant dynamic parameters, such as influent flow rate, adsorbent bed height and initial ammonium ion concentration on the adsorption of ammonium ion were examined, respectively. The Thomas model was applied to predict the breakthrough curves and to determine the characteristic parameters of column useful for process design and was found suitable for describing the adsorption process of the dynamic behavior of the zeolite 13X column. The total adsorbed quantities, equilibrium uptakes and total removal percents of ammonium ion related to the effluent volumes were determined by evaluating the breakthrough curves obtained at different conditions. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/18359556/Adsorption_characteristics_of_ammonium_ion_by_zeolite_13X_ DB - PRIME DP - Unbound Medicine ER -