Adsorption Kinetics of Chromium (VI) from Aqueous Solution Using an Anion Exchange Resin

In the present study, batch experiments were performed to remove chromium (VI) from aqueous solutions using an anion exchange resin. In order to investigate the kinetic mechanism which controls the chromium (VI) adsorption, four kinetic models were used: pseudo-first order, pseudo-second order, the...

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Bibliographic Details
Published in:Analytical letters 2021-01, Vol.54 (1-2), p.140-149
Main Authors: Marcu, Cristina, Varodi, Codruţa, Balla, Ancuţa
Format: Article
Language:English
Subjects:
Adsorption
Anion exchanging
anionic resin
Aqueous solutions
Chromium
chromium (VI)
Diphenylcarbazide
Resins
spectrophotometry
water pollution
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Summary:In the present study, batch experiments were performed to remove chromium (VI) from aqueous solutions using an anion exchange resin. In order to investigate the kinetic mechanism which controls the chromium (VI) adsorption, four kinetic models were used: pseudo-first order, pseudo-second order, the Elovich equation and the intraparticle diffusion model. In reaction with 1,5 diphenylcarbazide, chromium (VI) forms a complex, which was analyzed at 540 nm using a spectrophotometer after 7 min. The Cr (VI) adsorption process was well described by the pseudo-second order kinetic model for 0.1 to 0.3 g/L Cr (VI).
ISSN:0003-2719
1532-236X
DOI:10.1080/00032719.2020.1731523