Heavy metal separation capacity of a porous methacrylamidophenylalanine containing membrane based on a polyhydroxyethyl methacrylate matrix

Basit Öğe Kaydı
dc.contributor.authorDenizli, A.
dc.contributor.authorSay, R.
dc.contributor.authorPatir, S.
dc.contributor.authorArica, Y.
dc.date.accessioned2020-06-25T17:34:54Z
dc.date.available2020-06-25T17:34:54Z
dc.date.issued2001
dc.departmentKırıkkale Üniversitesi
dc.description.abstractThe abilities of various sorbent materials for heavy metal removal have been reported in the literature. We have developed a novel approach to obtain high metal-sorption capacity utilizing a membrane containing 2-methacrylamidophenylalanine. Metal-complexing ligand 2-methacrylamidophenylalanine (MAPA) was synthesized through the use methacrylo chloride and phenylalanine. Then, poly(2-hydroxyethyhmethacrylate-co-2-methacrylamidophenylalanine) (p(HEMA-co-MAPA)) membranes were prepared by UV-initiated photopolymerization of HEMA and MAPA in the presence of the initiator azobisisobutyronitrile. MAPA monomer was characterized by nuclear magnetic resonance spectroscopy. p(HEMA-co-MAPA) membranes were characterized by swelling studies, scanning electron microscopy, Fourier transform infrared spectroscopy, and elemental analysis. These membranes have large pores; the micropore dimensions are approximately 5-10 mum. p(HEMA-co-MA-PA) affinity membranes with a swelling ratio of 133.2% and containing 18.9 mmol MAPA/m(2) were used in the removal of the heavy-metal ions of copper, nickel, and mercury from aqueous media containing different amounts of these ions (5-600 mg/L) and at different pH values (2.0-7.0). The maximum adsorption capacities of heavy metal ions onto the MAPA-containing membranes under noncompetitive conditions were 23.8 = mmol/m(2) for Cu(II), 29.1 mmol/m(2) for Ni(II), and 50.3 mmol/m(2) for Hg(II). The affinity order was Hg(II) > Ni(II) > Cu(II). The adsorption of heavy metal ions increased with increasing pH and reached a plateau value at approximately pH 5.0. Adsorption of heavy metal ions from artificial wastewater was also studied. The adsorption capacities were 11.9 mmol/m(2) for Cu(II), 7.33 mmol/m(2) for Ni(II), and 9.79 mmol/m(2) for Hg(II). Desorption of heavy metal ions was performed using 0.1 M HNO3. The p(HEMA-co-MAPA) membranes are suitable for more than five cycles without noticeable loss of capacity.en_US
dc.identifier.citationclosedAccessen_US
dc.identifier.doi10.1081/SS-100105914
dc.identifier.endpage2231en_US
dc.identifier.issn0149-6395
dc.identifier.issue10en_US
dc.identifier.scopus2-s2.0-0034816023
dc.identifier.scopusqualityQ2
dc.identifier.startpage2213en_US
dc.identifier.urihttps://doi.org/10.1081/SS-100105914
dc.identifier.urihttps://hdl.handle.net/20.500.12587/2946
dc.identifier.volume36en_US
dc.identifier.wosWOS:000171018800006
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherMarcel Dekker Incen_US
dc.relation.ispartofSeparation Science And Technology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectp(HEMA-co-MAPA)en_US
dc.subjectheavy metal removalen_US
dc.subjectcopper (II)en_US
dc.subjectnickel (II)en_US
dc.subjectmercury (II)en_US
dc.titleHeavy metal separation capacity of a porous methacrylamidophenylalanine containing membrane based on a polyhydroxyethyl methacrylate matrixen_US
dc.typeArticle

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