Adsorptive Removal of Antimony (III) Using Modified Montmorillonite: A Study on Sorption Kinetics

Autor:	Monika Datta, Ansar Anjum
Rok vydání:	2012
Předmět:	chemistry.chemical_compound Adsorption Montmorillonite Aqueous solution Antimony chemistry Chemisorption Inorganic chemistry Kinetics chemistry.chemical_element Sorption Rate-determining step
Zdroj:	Journal of Analytical Sciences, Methods and Instrumentation. :167-175
ISSN:	2164-2753 2164-2745
Popis:	The adsorptive removal of antimony (III) has been successfully obtained on montmorillonite (MMT) and modified MMT from synthetic solution. The adsorption behavior of the modified and unmodified MMT has been investigated as a function of initial concentration of metal ion in the solution, pH of the solution and contact time using a batch extraction process. The optimized process can be applied for the adsorption, detection and estimation of antimony from 0.006 μg/ml (6.0 ppb) to 100.00 μg/ml (100.0 ppm) in aqueous solution. It has been observed that almost 99% of antimony (III) can be successfully extracted from a solution containing 100 μg/ml of the metal ion at pH 6.0 at 25?C ± 2?C. The investigation of the kinetics of sorption of antimony (III) on MMT/modified MMTshows intraparticle diffusion to be the rate limiting step during the initial stages of adsorption followed by chemisorption.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::fac42ca9e48816d176c394d976e2cbef https://doi.org/10.4236/jasmi.2012.23027 Zobrazit plný text záznamu