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Materials 2017, 10(5), 502;

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

Area Academica de Quimica, Universidad Autonoma del Estado de Hidalgo, Carr. Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo 42184, Mexico
Departamento de Química Analítica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, Valladolid 47011, Spain
Área de Energías, Universidad Politécnica de Francisco I. Madero, Domicilio Conocido, Tepatepec, Hidalgo C.P. 42640, Mexico
Author to whom correspondence should be addressed.
Academic Editor: Eric Guibal
Received: 7 April 2017 / Revised: 26 April 2017 / Accepted: 28 April 2017 / Published: 6 May 2017
(This article belongs to the Special Issue Sorption Materials for Environment Purification)
Full-Text   |   PDF [2705 KB, uploaded 6 May 2017]   |  


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. View Full-Text
Keywords: chromium(VI); magnetic particles; ionic liquid; adsorption capacity chromium(VI); magnetic particles; ionic liquid; adsorption capacity

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ferreira, T.A.; Rodriguez, J.A.; Paez-Hernandez, M.E.; Guevara-Lara, A.; Barrado, E.; Hernandez, P. Chromium(VI) Removal from Aqueous Solution by Magnetite Coated by a Polymeric Ionic Liquid-Based Adsorbent. Materials 2017, 10, 502.

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