Chelate extraction of transition metal ions by ethylene diamine diacetic acid with n-substituted octadecyl groups

dc.contributor.authorBıçak, Niyazi
dc.contributor.authorŞungur, Şana Kutun
dc.contributor.authorTan, Nükhet
dc.contributor.authorGazi, Mustafa
dc.date.accessioned2019-06-27T08:01:03Z
dc.date.available2019-06-27T08:01:03Z
dc.date.issued2002
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Endüstri Mühendisliği Bölümüen_US
dc.description.abstractAn organic-soluble chelating agent NN'-di-n-octadecyl ethylenediamine-NN'-diacetic acid (DOED) has been synthesized in two steps by (i) condensation of dibromoethane with 1-amino octadecane (octadecylamine) and (ii) subsequent reaction with sodium chloro acetate in alcohol-water mixture. The chelating agent in 2-ethylhexanol-cyclohexanol (1:1) solutions shows extremely high chelating ability for Ni(II) Co(II) Cu(II) Fe(111) Cr(III) and Cd(II) ions in neutral aqueous solutions. Extractions take place by the formation of (1:1) ligand-to-metal complexes and extraction coefficients are in the range 0.74-0.99. The ligand can be regenerated almost quantitatively by washing its complexes with 1M HCl and 0.2 M NaOH solutions successively. In each extraction step the organic solution exhibits a clear-cut phase separation and does not need salting out. The chelating agent can be regenerated and recycled more than 24 times without losing its extracting ability due to nonhydrolyzability of linkages in its structure. Experiments indicate that in high metal concentrations (more than 1 M) the solvent mixture itself is able to extract appreciable amounts of metal ions (33-53%). The solubility in organic solvents induced by long aliphatic chains seems to be general and the method presented offers possibility of large scale chelate extraction of metal ions of relatively low concentrations.en_US]
dc.identifier.citation0
dc.identifier.doi10.1081/SS-120003517en_US
dc.identifier.endpage2368
dc.identifier.issn0149-6395en_US
dc.identifier.issn1520-5754en_US
dc.identifier.issn0149-6395
dc.identifier.issn1520-5754
dc.identifier.issue10
dc.identifier.scopus2-s2.0-0036305198en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage2353en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/229
dc.identifier.urihttps://doi.org/10.1081/SS-120003517
dc.identifier.volume37en_US
dc.identifier.wosWOS:000176755500007en_US
dc.identifier.wosqualityN/A
dc.institutionauthorŞungur, Şana Kutunen_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Incen_US
dc.relation.journalSeparation Science and Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectChelate extraction of metal ionsen_US
dc.subjectEthylenediamine diacetic acidsen_US
dc.subjectMetal extractionen_US
dc.titleChelate extraction of transition metal ions by ethylene diamine diacetic acid with n-substituted octadecyl groupsen_US
dc.typeArticleen_US
dspace.entity.typePublication

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Chelate extraction of transition metal ions by ethylene diamine diacetic acid with n-substituted octadecyl groups.pdf
Size:
353.96 KB
Format:
Adobe Portable Document Format
Description: