naa a22 4500 510818900 CHVBK 20180411083521.0 cr unu---uuuuu 180411e20130101xx s 000 0 eng 10.1007/s11814-012-0111-3 doi (NATIONALLICENCE)springer-10.1007/s11814-012-0111-3 Separation of Co(II) and Ni(II) from thiocyanate media by hollow fiber supported liquid membrane containing Alamine300 as carrier — investigation on polarity of diluent and membrane stability [Elektronische Daten] [Natchanun Leepipatpiboon, Ura Pancharoen, Prakorn Ramakul] The separation of cobalt(II) and nickel(II) ions by HFSLM has been presented. The feed solution is 0.5M thiocyanate containing 300 ppm each of cobalt(II) and nickel(II) ions, whereas extractant is Alamine300 and the stripping solution is ammonia. Cobalt(II) is more preferable with Alamine300 than nickel(II). The effects of pH, Alamine300 concentration and ammonia concentration were investigated. Seven diluents were used: hexane, decanol, chlorobenzene, benzene, dichloromethane, ethylene dichloride and chloroform with different polarity indexes, from 0.1-4.1. Nickel(II) ion which is unpreferable with Alamine300 was used as a tracer to determine the membrane stability. The polarity of the diluents was found to be the main factor influencing the extraction performance and stability of a liquid membrane. The decreasing of polarity of the diluent can prolong the membrane stability, but the percentages of extraction and stripping decreased. The longest lifetime, 200 minutes, was obtained by using hexane as a diluent with the polarity index of 0.1. Korean Institute of Chemical Engineers, Seoul, Korea, 2012 Cobalt nationallicence Nickel nationallicence Hollow Fiber nationallicence Liquid Membrane nationallicence Stability nationallicence Leepipatpiboon Natchanun Chromatography and Separation Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, 10330, Patumwan, Bangkok, Thailand aut Pancharoen Ura Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 10330, Patumwan, Bangkok, Thailand aut Ramakul Prakorn Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, 73000, Nakhon Pathom, Thailand aut Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/1(2013-01-01), 194-200 0256-1115 30:1<194 2013 30 11814 https://doi.org/10.1007/s11814-012-0111-3 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11814-012-0111-3 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Leepipatpiboon Natchanun Chromatography and Separation Research Unit, Department of Chemistry, Faculty of Science, Chulalongkorn University, 10330, Patumwan, Bangkok, Thailand aut NATIONALLICENCE 700 1- Pancharoen Ura Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, 10330, Patumwan, Bangkok, Thailand aut NATIONALLICENCE 700 1- Ramakul Prakorn Department of Chemical Engineering, Faculty of Engineering and Industrial Technology, Silpakorn University, 73000, Nakhon Pathom, Thailand aut NATIONALLICENCE 773 0- Korean Journal of Chemical Engineering Springer US; http://www.springer-ny.com 30/1(2013-01-01), 194-200 0256-1115 30:1<194 2013 30 11814 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer