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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 20-21Mercury Sorption on Chitosan

Mercury Sorption on Chitosan

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Abstract:

Mercury sorption on chitosan was investigated in batch and continuous systems. Chitosan sorption properties were determined through sorption isotherms. Langmuir and Freundlich equations were used for the modeling of isotherms at pH 5. In batch systems, maximum sorption capacities reached 550 mg Hg/g. Sorption kinetics have been studied as a function of sorbent particle size and stirring rate. Dynamic removal of mercury was tested in a fixed bed reactor investigating the following parameters: particle size, column size, flow velocity and metal ion concentration. Clark and Adams-Bohart models were evaluated for the simulation of breakthrough curves. This study shows that chitosan is an effective sorbent for the treatment and recovery of mercury from dilute effluents at near neutral pH.

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Periodical:

Advanced Materials Research (Volumes 20-21)

Pages:

635-638

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.20-21.635

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Online since:

July 2007

Authors:

Karol Campos, Eric Guibal, Francisco Peirano, M. Ly, Holger Maldonado

Keywords:

Adsorption, Chitosan (CS), Column Size Effect, Concentration Effect, Fixed Bed Reactor, Flow Velocity Effect, Mercury Ion, Particle Size Effect

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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