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Kinetic parameters and mechanisms of the batch biosorption of Cr(VI) and Cr(III) onto Leersia hexandra Swartz biomass.
J Colloid Interface Sci. 2009 May 01; 333(1):71-7.JC

Abstract

The hyperaccumulative plant species Leersia hexandra Swartz, particularly, has been considered for its detoxification mechanism for phytoremediation of chromium-contaminated water environments. This study investigates the role of the adsorption mechanism of the L. hexandra Sw. biomass on the removal of chromium ions Cr(VI) and Cr(III) from an aqueous solution. The interaction between chromium ions and the L. hexandra Sw. biomass was characterized by using infrared spectroscopy. The results indicate that the binding process of the chromium ions involves the active participation of ligands present in the biomass, such as acylamide, carbonyl, amino, carboxyl, and hydroxyl groups, to immobilize the chromium ions. Equilibrium biosorption experiments were carried out to investigate the effects of pH values and contact time. Adsorption isotherms were modeled with the Langmuir and Freundlich equations and isotherm constants were calculated. Kinetic experiments showed the rapid process of biosorption and the pseudo-second-order model was successfully applied to predict the rate constant of biosorption. This study firstly discovered the kinetics equilibrium modelling of L. hexandra Sw. biomass on biosorption Cr(VI) and Cr(III).

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Authors+Show Affiliations

Li J
Department of Material and Chemical Engineering, Guilin University of Technology, Guilin 541004, China. likianping@263.net
Lin Q
No affiliation info available
Zhang X
No affiliation info available
Yan Y
No affiliation info available

MeSH

AdsorptionBiomassChromiumHydrogen-Ion ConcentrationKineticsPoaceaeSpecies SpecificitySpectrophotometry, InfraredSurface Properties

Pub Type(s)

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

Language

eng

PubMed ID

19251269

Citation

Li, Jianping, et al. "Kinetic Parameters and Mechanisms of the Batch Biosorption of Cr(VI) and Cr(III) Onto Leersia Hexandra Swartz Biomass." Journal of Colloid and Interface Science, vol. 333, no. 1, 2009, pp. 71-7.
Li J, Lin Q, Zhang X, et al. Kinetic parameters and mechanisms of the batch biosorption of Cr(VI) and Cr(III) onto Leersia hexandra Swartz biomass. J Colloid Interface Sci. 2009;333(1):71-7.
Li, J., Lin, Q., Zhang, X., & Yan, Y. (2009). Kinetic parameters and mechanisms of the batch biosorption of Cr(VI) and Cr(III) onto Leersia hexandra Swartz biomass. Journal of Colloid and Interface Science, 333(1), 71-7. https://doi.org/10.1016/j.jcis.2009.02.021
Li J, et al. Kinetic Parameters and Mechanisms of the Batch Biosorption of Cr(VI) and Cr(III) Onto Leersia Hexandra Swartz Biomass. J Colloid Interface Sci. 2009 May 1;333(1):71-7. PubMed PMID: 19251269.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Kinetic parameters and mechanisms of the batch biosorption of Cr(VI) and Cr(III) onto Leersia hexandra Swartz biomass. AU - Li,Jianping, AU - Lin,Qingyu, AU - Zhang,Xuehong, AU - Yan,Yan, Y1 - 2009/02/12/ PY - 2008/10/22/received PY - 2009/01/01/revised PY - 2009/02/08/accepted PY - 2009/3/3/entrez PY - 2009/3/3/pubmed PY - 2009/6/24/medline SP - 71 EP - 7 JF - Journal of colloid and interface science JO - J Colloid Interface Sci VL - 333 IS - 1 N2 - The hyperaccumulative plant species Leersia hexandra Swartz, particularly, has been considered for its detoxification mechanism for phytoremediation of chromium-contaminated water environments. This study investigates the role of the adsorption mechanism of the L. hexandra Sw. biomass on the removal of chromium ions Cr(VI) and Cr(III) from an aqueous solution. The interaction between chromium ions and the L. hexandra Sw. biomass was characterized by using infrared spectroscopy. The results indicate that the binding process of the chromium ions involves the active participation of ligands present in the biomass, such as acylamide, carbonyl, amino, carboxyl, and hydroxyl groups, to immobilize the chromium ions. Equilibrium biosorption experiments were carried out to investigate the effects of pH values and contact time. Adsorption isotherms were modeled with the Langmuir and Freundlich equations and isotherm constants were calculated. Kinetic experiments showed the rapid process of biosorption and the pseudo-second-order model was successfully applied to predict the rate constant of biosorption. This study firstly discovered the kinetics equilibrium modelling of L. hexandra Sw. biomass on biosorption Cr(VI) and Cr(III). SN - 1095-7103 UR - https://www.unboundmedicine.com/medline/citation/19251269/Kinetic_parameters_and_mechanisms_of_the_batch_biosorption_of_Cr_VI__and_Cr_III__onto_Leersia_hexandra_Swartz_biomass_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0021-9797(09)00214-8 DB - PRIME DP - Unbound Medicine ER -