Highly Selective and Efficient Membrane Transport of Copper as Cu(SCN)2−4Ion Using K+-Dicyclohexyl-18-crown-6 as Carrier
- 1 September 1995
- journal article
- research article
- Published by Taylor & Francis in Separation Science and Technology
- Vol. 30 (15) , 3061-3072
- https://doi.org/10.1080/01496399508013128
Abstract
Potassium-Dicyclohexyl-18-Crown-6 Complex Was Used As A Highly Efficient Carrier For The Uphill Transport Of Copper As Cu(SCN)2− 4 Complex Ion Through A Chloroform Bulk Liquid Membrane. By Using Histidine As A Metal Ion Acceptor In The Receiving Phase At The Optimum Ph Of 7.4, The Amount Of Copper Transported Across The Liquid Membrane After 2 Hours Was 90.2 ± 1.0%. The Selectivity And Efficiency Of Copper Transport From Aqueous Solutions Containing Equimolar Mixtures Of Ag+, Cd2+, Zn2+, Ni2+, Fe2+, Co2+, Pb2+, Mn2+, Fe3+, Bi3+, And Cr3+ Ions Were Investigated. In The Presence Of Pyrophosphate As A Suitable Masking Agent In The Source Phase, The Interfering Effects Of Co2+, Zn2+, Pb2+, And Cd2+ Ions Were Completely Eliminated.Keywords
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