Chelate Extraction of Transition Metal Ions by Ethylene Diamine Diacetic Acid With N-Substituted Octadecyl Groups

dc.contributor.author Bıçak, Niyazi
dc.contributor.author Şungur, Şana Kutun
dc.contributor.author Tan, Nükhet
dc.contributor.author Gazi, Mustafa
dc.date.accessioned 2019-06-27T08:01:03Z
dc.date.available 2019-06-27T08:01:03Z
dc.date.issued 2002
dc.department Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Endüstri Mühendisliği Bölümü en_US
dc.description.abstract An 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.citationcount 0
dc.identifier.doi 10.1081/SS-120003517 en_US
dc.identifier.endpage 2368
dc.identifier.issn 0149-6395 en_US
dc.identifier.issn 1520-5754 en_US
dc.identifier.issn 0149-6395
dc.identifier.issn 1520-5754
dc.identifier.issue 10
dc.identifier.scopus 2-s2.0-0036305198 en_US
dc.identifier.scopusquality Q2
dc.identifier.startpage 2353 en_US
dc.identifier.uri https://hdl.handle.net/20.500.12469/229
dc.identifier.uri https://doi.org/10.1081/SS-120003517
dc.identifier.volume 37 en_US
dc.identifier.wos WOS:000176755500007 en_US
dc.institutionauthor Şungur, Şana Kutun en_US
dc.language.iso en en_US
dc.publisher Taylor & Francis Inc en_US
dc.relation.journal Separation Science and Technology en_US
dc.relation.publicationcategory Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı en_US
dc.rights info:eu-repo/semantics/openAccess en_US
dc.scopus.citedbyCount 0
dc.subject Chelate extraction of metal ions en_US
dc.subject Ethylenediamine diacetic acids en_US
dc.subject Metal extraction en_US
dc.title Chelate Extraction of Transition Metal Ions by Ethylene Diamine Diacetic Acid With N-Substituted Octadecyl Groups en_US
dc.type Article en_US
dc.wos.citedbyCount 0
dspace.entity.type Publication

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