Chromium(VI) Removal from Aqueous Solution by Magnetite Coated by a Polymeric Ionic Liquid-Based Adsorbent

Chromium(VI) Removal from Aqueous Solution by Magnetite Coated by a Polymeric Ionic Liquid-Based Adsorbent

An evaluation of the chromium(VI) adsorption capacity of four magnetite sorbents coated with a polymer phase containing polymethacrylic acid or polyallyl-3-methylimidazolium is presented. Factors that influence the chromium(VI) removal such as solution pH and contact time were investigated in batch...

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Bibliographic Details
Main Authors: Thania Alexandra Ferreira, Jose Antonio Rodriguez, María Elena Paez-Hernandez, Alfredo Guevara-Lara, Enrique Barrado, Prisciliano Hernandez
Format: Article
Language:English
Published: MDPI AG 2017-05-01
Series:Materials
Subjects:
chromium(VI)
magnetic particles
ionic liquid
adsorption capacity
Online Access:http://www.mdpi.com/1996-1944/10/5/502
Description
Summary:An evaluation of the chromium(VI) adsorption capacity of four magnetite sorbents coated with a polymer phase containing polymethacrylic acid or polyallyl-3-methylimidazolium is presented. Factors that influence the chromium(VI) removal such as solution pH and contact time were investigated in batch experiments and in stirred tank reactor mode. Affinity and rate constants increased with the molar ratio of the imidazolium. The highest adsorption was obtained at pH 2.0 due to the contribution of electrostatic interactions.
ISSN:1996-1944

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