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Fixed-bed adsorption dynamics of Pb (II) adsorption from aqueous solution using nanostructured γ-alumina

TLDR
In this article, removal of metal ions Pb (II) using nanostructured γ-alumina was investigated in a fixed-bed column, and the experimental data were in good agreement with Thomas and Yoon-Nelson models, but in the case of Adams-Bohart model, low correlation coefficient is observed.
Abstract
In the present study, removal of metal ions Pb (II) using nanostructured γ-alumina was investigated in a fixed-bed column. Comparison of Thomas, Yoon-Nelson, and Adams-Bohart models with experimental kinetic results was done, and model parameters were evaluated by linear regression analysis for Pb2+ adsorption in different bed heights, initial concentrations, and flow rates. The obtained experimental data are in good agreement with Thomas and Yoon-Nelson models, but in the case of Adams-Bohart model, low correlation coefficient is observed.

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Nanomaterials for the Removal of Heavy Metals from Wastewater

TL;DR: Novel nanomaterials, including carbon-based nanommaterials, zero-valent metal, metal-oxide based nanomMaterials, and nanocomposites, and their applications for the removal of heavy metal ions from wastewater were systematically reviewed and their efficiency, limitations, and advantages were compared.
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Preparation of γ-Al2O3 nanoparticles using modified sol-gel method and its use for the adsorption of lead and cadmium ions

TL;DR: In this paper, nano-sized γ-Al2O3 particles were synthesized by modified sol-gel method using new precursors, and the removal efficiency of heavy metal ions (lead and cadmium) in the adsorption process by the as-synthesized alumina nanoparticle has been investigated and the effect of various experimental parameters such as pH, adsorbent dosage and exposure time were examined.
Journal ArticleDOI

The removal of heavy metals in a packed bed column using immobilized cassava peel waste biomass

TL;DR: In this paper, the authors investigated the biosorption of heavy metals (Cr3+, Co2+ and V3+) onto immobilized cassava peel waste in a packed bed column.
Journal ArticleDOI

An ion-imprinted functionalized SBA-15 adsorbent synthesized by surface imprinting technique via reversible addition–fragmentation chain transfer polymerization for selective removal of Ce(III) from aqueous solution

TL;DR: Ce(III)-IIP could be used as an excellent adsorbent for efficient removal of Ce(III) from aqueous solution for adsorption experiments and in natural water samples with satisfactory results.
References
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Journal ArticleDOI

Biosorbents for heavy metals removal and their future

TL;DR: The biosorbents widely used for heavy metal removal were reviewed, mainly focusing on their cellular structure, biosorption performance, their pretreatment, modification, regeneration/reuse, modeling of biosor adaptation (isotherm and kinetic models), the development of novel biosorbent, their evaluation, potential application and future.
Book

Mass-transfer operations

TL;DR: In this article, the Mass Transfer Coefficients for Moleuclar Diffusion in Fluids and Interphase Mass Transfer in Solid-Fluid Operations are presented. But they do not consider the effect of ion exchange in solids.
Journal ArticleDOI

Adsorption of heavy metal ions on soils and soils constituents

TL;DR: Empirical and mechanistic model approaches for heavy metal adsorption and parameter determination in such models have been reviewed and Sorption mechanisms in soils, the influence of surface functional groups and surface complexation as well as parameters influencing adsorbption are discussed.
Journal ArticleDOI

Single- and multi-component adsorption of cadmium and zinc using activated carbon derived from bagasse--an agricultural waste.

TL;DR: Activated carbon derived from bagasse, an agricultural waste material, has been investigated as a replacement for the current expensive methods of removing heavy metals from wastewater and it was concluded that the adsorption occurs through a film diffusion mechanism at low as well as at higher concentrations.
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