Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.cej.2010.08.012
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dc.titleSingle and binary biosorption of cerium and europium onto crab shell particles
dc.contributor.authorVijayaraghavan, K.
dc.contributor.authorBalasubramanian, R.
dc.date.accessioned2014-06-17T08:25:09Z
dc.date.available2014-06-17T08:25:09Z
dc.date.issued2010-10
dc.identifier.citationVijayaraghavan, K., Balasubramanian, R. (2010-10). Single and binary biosorption of cerium and europium onto crab shell particles. Chemical Engineering Journal 163 (3) : 337-343. ScholarBank@NUS Repository. https://doi.org/10.1016/j.cej.2010.08.012
dc.identifier.issn13858947
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/66178
dc.description.abstractThe ability of crab shell to biosorb two rare earth elements (REE), namely cerium(III) and europium(III) from single and binary systems has been studied. Crab shell majorly comprised of calcium carbonate, protein and chitin. Experiments to identify the role of these constituents in REE biosorption revealed that calcium carbonate was mainly responsible for REE removal. Microprecipitation of REE by carbonate ions and subsequent settling on the surface of crab shell was identified as major mechanism responsible for crab shell biosorption performance. At optimum pH of 6, in single component system, crab shell exhibited maximum Ce(III) and Eu(III) uptakes of 144.9 and 49.5. mg/g, respectively, according to the Langmuir model. In binary systems, both Ce(III) and Eu(III) compete with each other resulted in decreased uptake. In an attempt to model the binary biosorption data, Sheindorf-Rebhun-Sheintuch equation provided more accurate prediction of isotherm data compared to extended Langmuir model with constant interaction factor. Kinetic experiments revealed that equilibrium was attained in 60. min, followed by complete saturation in 2. h, for both Ce(III) and Eu(III). Pseudo-first order model better predicted the kinetic data with high correlation coefficients and low % error values than pseudo-second order model. © 2010 Elsevier B.V.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.cej.2010.08.012
dc.sourceScopus
dc.subjectCrab shell
dc.subjectIsotherm
dc.subjectKinetics
dc.subjectMulticomponent
dc.subjectRare earths
dc.typeArticle
dc.contributor.departmentDIVISION OF ENVIRONMENTAL SCIENCE & ENGG
dc.contributor.departmentCIVIL ENGINEERING
dc.description.doi10.1016/j.cej.2010.08.012
dc.description.sourcetitleChemical Engineering Journal
dc.description.volume163
dc.description.issue3
dc.description.page337-343
dc.description.codenCMEJA
dc.identifier.isiut000283449400022
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