Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.cej.2006.11.012
DC FieldValue
dc.titleDetermination of lead biosorption properties by experimental and modeling simulation study
dc.contributor.authorChen, J.P.
dc.contributor.authorWang, L.
dc.contributor.authorZou, S.-W.
dc.date.accessioned2014-10-08T08:32:03Z
dc.date.available2014-10-08T08:32:03Z
dc.date.issued2007-07-01
dc.identifier.citationChen, J.P., Wang, L., Zou, S.-W. (2007-07-01). Determination of lead biosorption properties by experimental and modeling simulation study. Chemical Engineering Journal 131 (1-3) : 209-215. ScholarBank@NUS Repository. https://doi.org/10.1016/j.cej.2006.11.012
dc.identifier.issn13858947
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/87482
dc.description.abstractThe Ca-alginate based ion exchange resin was applied in the lead removal from the synthesized waste streams in batch reactors. This study shows that the resin had both high removal capacities and rate at the optimum pH of 4 or higher. The Langmuir isotherm well described the equilibrium data in various cases. The maximum removal capacity (qmax) for lead ions was 3.24 mmol/g for the Ca- and Na-free solutions, which is much higher than regular adsorbents. The qmax values decreased to 1.12 and 2.49 mmol-Pb/g respectively in the presence of calcium and sodium, due to the competitions among the metals for the ion exchange sites. The removal was increased as the initial solution pH was increased. A series of kinetic experiments was conducted with various conditions. It was found that the metal ions can quickly be removed. More of the metal can be removed within 20 min and the complete uptake was achieved in 90 min, which is much shorter than the most of adsorption processes. The presence of calcium and sodium ions played some roles in the uptake kinetics. It is found through experiments that the mass transfer was the controlling mechanism. A diffusion-controlled model was employed in the simulation. It was demonstrated that the model successfully described the uptake kinetics with such operational conditions as initial concentrations, stirring speeds, and presence of calcium and sodium ions. © 2006 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.cej.2006.11.012
dc.sourceScopus
dc.subjectCa-alginate based ion exchange resin
dc.subjectIsotherm
dc.subjectKinetics
dc.subjectMetal biosorption
dc.subjectModeling
dc.typeArticle
dc.contributor.departmentDIVISION OF ENVIRONMENTAL SCIENCE & ENGG
dc.description.doi10.1016/j.cej.2006.11.012
dc.description.sourcetitleChemical Engineering Journal
dc.description.volume131
dc.description.issue1-3
dc.description.page209-215
dc.description.codenCMEJA
dc.identifier.isiut000247187100023
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