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Sorption isotherm and kinetic modeling of aniline on Cr-bentonite.
J Hazard Mater. 2009 Aug 15; 167(1-3):141-7.JH

Abstract

In this paper, the sorption characteristics of aniline on Cr-bentonite prepared using synthetic wastewater containing chromium was investigated in a batch system at 30 degrees C. The effects of relevant parameters, such as pH value of solution, adsorbent dosage and initial aniline concentration were examined. The experimental data were analyzed by the Langmuir and Freundlich, and Temkin models of sorption. The sorption isotherm data were fitted well to Langmuir isotherm and the monolayer sorption capacity was found to be 21.60 mg/g at 30 degrees C. Dubinin-Redushkevich (D-R) isotherm was applied to describe the nature of aniline uptake and it was found that it occurred chemically. The kinetic data obtained at different concentrations were analyzed using a pseudo first-order, pseudo second-order kinetic equation and intraparticle diffusion model. The experimental data fitted very well the pseudo second-order kinetic model. Intraparticle diffusion affects aniline uptake. The results indicate that there is significant potential for Cr-bentonite as an adsorbent material for aniline removal from aqueous solutions.

Authors+Show Affiliations

National Laboratory of Mineral Materials, China University of Geosciences, Beijing, PR China. zhengh@cugb.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

19171429

Citation

Zheng, Hong, et al. "Sorption Isotherm and Kinetic Modeling of Aniline On Cr-bentonite." Journal of Hazardous Materials, vol. 167, no. 1-3, 2009, pp. 141-7.
Zheng H, Liu D, Zheng Y, et al. Sorption isotherm and kinetic modeling of aniline on Cr-bentonite. J Hazard Mater. 2009;167(1-3):141-7.
Zheng, H., Liu, D., Zheng, Y., Liang, S., & Liu, Z. (2009). Sorption isotherm and kinetic modeling of aniline on Cr-bentonite. Journal of Hazardous Materials, 167(1-3), 141-7. https://doi.org/10.1016/j.jhazmat.2008.12.093
Zheng H, et al. Sorption Isotherm and Kinetic Modeling of Aniline On Cr-bentonite. J Hazard Mater. 2009 Aug 15;167(1-3):141-7. PubMed PMID: 19171429.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sorption isotherm and kinetic modeling of aniline on Cr-bentonite. AU - Zheng,Hong, AU - Liu,Donghong, AU - Zheng,Yan, AU - Liang,Shuping, AU - Liu,Zhe, Y1 - 2008/12/27/ PY - 2008/11/11/received PY - 2008/12/17/revised PY - 2008/12/17/accepted PY - 2009/1/28/entrez PY - 2009/1/28/pubmed PY - 2009/12/16/medline SP - 141 EP - 7 JF - Journal of hazardous materials JO - J Hazard Mater VL - 167 IS - 1-3 N2 - In this paper, the sorption characteristics of aniline on Cr-bentonite prepared using synthetic wastewater containing chromium was investigated in a batch system at 30 degrees C. The effects of relevant parameters, such as pH value of solution, adsorbent dosage and initial aniline concentration were examined. The experimental data were analyzed by the Langmuir and Freundlich, and Temkin models of sorption. The sorption isotherm data were fitted well to Langmuir isotherm and the monolayer sorption capacity was found to be 21.60 mg/g at 30 degrees C. Dubinin-Redushkevich (D-R) isotherm was applied to describe the nature of aniline uptake and it was found that it occurred chemically. The kinetic data obtained at different concentrations were analyzed using a pseudo first-order, pseudo second-order kinetic equation and intraparticle diffusion model. The experimental data fitted very well the pseudo second-order kinetic model. Intraparticle diffusion affects aniline uptake. The results indicate that there is significant potential for Cr-bentonite as an adsorbent material for aniline removal from aqueous solutions. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/19171429/Sorption_isotherm_and_kinetic_modeling_of_aniline_on_Cr_bentonite_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(08)01945-6 DB - PRIME DP - Unbound Medicine ER -