title: Separation of heavy metals from water by functionalized glycidyl methacrylate poly (high internal phase emulsions).
abstract: Removal of silver, lead and cadmium ions from both model solutions and real contaminated water was achieved, in a flow through manner, by using highly porous functionalized poly(glycidyl methacrylate) materials, prepared by the polymerisation of high internal phase emulsions (polyHIPE), with significant sorption differences between metals allowing for selective removal. PolyHIPEs, initially prepared from glycidyl methacrylate as a functional monomer, were functionalized with pentaerythritol tetrakis(3-mercaptopropionate), 1,9-nonanedithiol and 2-aminobenzenethiol via the epoxy ring opening on the polymer supports and applied in a flow-through manner via encasements into dedicated disk holders. Capacity of 21.7mg Ag per gram of polymer was found for 1,9-nonanedithiol functionalized polymers, while the capacity was decreasing with the decreasing ionic radius of the metal; the dynamics of sorption also depended on metal ion size and furthermore on the thiol used for the polymer functionalization.
authors.affiliation: Polymer Technology College, Ozare 19, SI-2380 Slovenj Gradec, Slovenia; University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova 17, SI-2000 Maribor, Slovenia.
authors.forename: Sebastjan
authors.initials: S
authors.lastname: Huš
authors.affiliation: University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova 17, SI-2000 Maribor, Slovenia.
authors.forename: Mitja
authors.initials: M
authors.lastname: Kolar
authors.affiliation: University of Maribor, Faculty of Chemistry and Chemical Engineering, Smetanova 17, SI-2000 Maribor, Slovenia. Electronic address: peter.krajnc@um.si.
authors.forename: Peter
authors.initials: P
authors.lastname: Krajnc
mesh_terms: D000473:Alkanes / Q000737:chemistry; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D004852:Epoxy Compounds / Q000737:chemistry*; D007477:Ions / Q000302:isolation & purification; D019216:Metals, Heavy / Q000302:isolation & purification*; D008689:Methacrylates / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D016062:Porosity; D013343:Styrenes / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000737:chemistry; D014867:Water / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000302:isolation & purification*
chemical_list: D000473:Alkanes; D004852:Epoxy Compounds; D007477:Ions; D019216:Metals, Heavy; D008689:Methacrylates; D011108:Polymers; D013343:Styrenes; D013438:Sulfhydryl Compounds; D014874:Water Pollutants, Chemical; C493734:polyHIPE; D014867:Water; C528480:1,9-nonanedithiol; C007870:glycidyl methacrylate
keywords: Heavy metal removal; Heavy metals; PolyHIPE; Polymer supported thiols; Porous polymers; Water purification