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Materials 2017, 10(5), 502; doi:10.3390/ma10050502

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

1
Area Academica de Quimica, Universidad Autonoma del Estado de Hidalgo, Carr. Pachuca-Tulancingo Km. 4.5, Mineral de la Reforma, Hidalgo 42184, Mexico
2
Departamento de Química Analítica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, Valladolid 47011, Spain
3
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)
View Full-Text   |   Download PDF [2705 KB, uploaded 6 May 2017]   |  

Abstract

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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MDPI and ACS Style

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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