Molecularly imprinted polymer for the removal of diclofenac from water : Synthesis and characterization
Samah, Nurlin Abu (Universitat Autònoma de Barcelona. Departament de Química)
Sánchez-Martín, María-Jesús (Universitat Autònoma de Barcelona. Departament de Química)
Sebastián Pérez, Rosa Maria (Universitat Autònoma de Barcelona. Departament de Química)
Valiente Malmagro, Manuel (Universitat Autònoma de Barcelona. Departament de Química)
López-Mesas, Montserrat (Universitat Autònoma de Barcelona. Departament de Química)

Date:	2018
Abstract:	Contaminants of Emerging Concerns (CECs) have been introduced as one type of recalcitrant pollutant sources in water. In this study, the non-steroidal anti-inflammatory drug diclofenac (DCF) has been removed from water solutions using Molecularly Imprinted Polymer (MIP), synthetized via bulk polymerization with allylthiourea (AT) as the functional monomer and using DCF as template (MIP-DCF). DCF detection has been performed by UV spectrophotometer. From the kinetic study in batch mode, approximately 100% of removal is observed by using 10 mg of MIP-DCF, with an initial concentration of 5 mg/L of DCF at pH 7, within 3 min and agitated at 25 °C. In continuous flow mode study, using a cartridge pre-packed with 10 mg of MIP-DCF, a high adsorption capacity of 160 mg DCF/g MIP was obtained. To study the porosity of MIPs, scanning electron microscopy (SEM) has been used. In order to characterize the chemical interaction between monomer and template, the pre-polymerization mixture for MIP and DCF has also been studied by H NMR. One of the chemical shift observed has been related to the formation of a complex between amine protons of thiourea group of AT with carboxylic acid on DCF. In conclusion, the developed MIP works as a good adsorbent for DCF removal, and is selective to DCF in the presence of indomethacin and ibuprofen.
Grants:	Ministerio de Economía y Competitividad CTM2015-65414-C2-1-R
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Molecularly imprinted polymer ; Diclofenac ; Contaminant of emerging concerns
Published in:	Science of the total environment, Vol. 631-632 (August 2018) , p. 1534-1543, ISSN 1879-1026

DOI: 10.1016/j.scitotenv.2018.03.087

Postprint 26 p, 1.1 MB

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Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group in Electrochemistry, Photochemistry and Organic Reactivity (GEFRO)
Articles > Research articles
Articles > Published articles