Cadmium Adsorption Kinetic Study Using Natural Brasgel Clay the Adsorbent

Joseane Damasceno Mota; Rochelia Silva Souza Cunha; Patrícia Noemia Mota de Vasconcelos; Meiry Gláucia Freire Rodrigues

doi:10.4028/www.scientific.net/MSF.912.202

Paper Titles

Reutilization of the Solid Waste Materials Produced by a Ceramic Tiles Industry as a Raw Material for the Production of New Ceramic Tiles
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Concrete Made with Alternative Fine Aggregates: The Reuse of Porcelain Electrical Insulators
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Interlocking Concrete Paving Blocks Produced with Foundry Sand Waste
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Characterisation of Geopolymer Cements Obtained from Different Sources of Metakaolin
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Cadmium Adsorption Kinetic Study Using Natural Brasgel Clay the Adsorbent
p.202

Analysis of Catalytic Potential of a New Heterogeneous Catalyst in the Preparation of Biodiesel
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Use of Nickel Slag as Raw Material for Roof Tiles Production
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Characterization of the Non-Polymeric Fraction of Post-Consumer LCD Monitor Housings
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Obtainment of Porous Ceramic Structures: A Comparison among Different Compositions and Methods of Conformation
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HomeMaterials Science ForumMaterials Science Forum Vol. 912Cadmium Adsorption Kinetic Study Using Natural...

Cadmium Adsorption Kinetic Study Using Natural Brasgel Clay the Adsorbent

Abstract:

Heavy industrial activities result in contamination of waste water with many heavy metals, including cadmium, nickel, lead, mercury. Within this context becomes a growing concern of the population and environmental agencies regarding water contamination by heavy metals from industrial effluents. Because of this problem, this paper aims to study and evaluate the main properties of natural Brasgel clay in order to remove cadmium from synthetic effluents, analyzing its kinetic adsorption and its isothermal balance. Once clays exhibit good cation exchange capacity, selectivity and regenerability and for this reason has aroused interest in the use as an adsorbent. As finite bath testing we found that the Brasgel clay, removed approximately 90% of cadmium. The Langmuir model presented best fit to the experimental data, adequately describing the dynamics of adsorption. Kinetic tests indicated that the cadmium removal process by natural Brasgel clay apply the mechanism of the pseudo-second-order rate model, a time of 20 minutes and required to reach equilibrium. Thus, the results indicated that Brasgel clay can be used as an adsorbent for the removal of cadmium from contaminated effluent.