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Microwave enhanced synthesis of chitosan-graft-polyacrylamide molecular imprinting polymer for selective removal of 17?-estradiol at trace concentration

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dc.citedby21
dc.contributor.authorSaifuddin N.en_US
dc.contributor.authorNur Y.A.A.en_US
dc.contributor.authorAbdullah S.F.en_US
dc.contributor.authorid22135844300en_US
dc.contributor.authorid36898671900en_US
dc.contributor.authorid14319069500en_US
dc.date.accessioned2023-12-29T07:50:17Z
dc.date.available2023-12-29T07:50:17Z
dc.date.issued2011
dc.description.abstractPolymers have been molecularly imprinted for the purpose of binding specifically to 17?-estradiol. A molecularly imprinted polymer (MIP) material was prepared using 17?-estradiol as the imprinted molecule, acrylamide as functional monomer and macroporous chitosan beads as functional matrix. Chitosan-graft-polyacrylamide was synthesized without any radical initiator or catalyst using microwave (MW) irradiation, which allowed MIP production in about 1 h compared to conventional method which requires 8-10 h. The representative microwave synthesized graft copolymer was characterized by Fourier transform-infrared spectroscopy, taking chitosan as a reference. The parameters studied included MIP synthesis optimization, using microwave, adsorption kinetics, adsorption isotherm, selectivity and reusability. Batch as well as column flow studies were performed. Removal experiments in batch were carried out by applying the chitosan-graft-polyacrylamide Molecular Imprinting Polymer (MIP) to various 17?-estradiol aqueous solutions. The chitosan coated polyacrylamide MIP was more rigid with better stability and enhanced adsorption capacity. The maximum adsorption capacity was observed to be 5.01 mg g-1 of MIP, which gave removal efficiency of above 91%. After 60 min, the change of adsorption capacities for 17?-estradiol did not show notable effects. The Langmuir and Freundlich adsorption models were also applied to describe the equilibrium isotherms. Equilibrium adsorption data showed that the adsorption of 17 ?-estradiol onto the MIP fitted well to the Langmuir equation. The MIPs were easily regenerated after each experiment with Methanol:Acetic acid (4:1 v/v) solvent and reused. � 2011 Academic Journals Inc.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.3923/ajb.2011.38.54
dc.identifier.epage54
dc.identifier.issue1
dc.identifier.scopus2-s2.0-77957699931
dc.identifier.spage38
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-77957699931&doi=10.3923%2fajb.2011.38.54&partnerID=40&md5=363936f76b05f3b80fa795d7ef5ccbb2
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/30611
dc.identifier.volume6
dc.pagecount16
dc.relation.ispartofAll Open Access; Bronze Open Access
dc.sourceScopus
dc.sourcetitleAsian Journal of Biochemistry
dc.subjectAdsorbent
dc.subjectFreundlich isotherms
dc.subjectLangmuir isotherm
dc.subjectMicropollution
dc.subjectWastewater
dc.titleMicrowave enhanced synthesis of chitosan-graft-polyacrylamide molecular imprinting polymer for selective removal of 17?-estradiol at trace concentrationen_US
dc.typeArticleen_US
dspace.entity.typePublication
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