Kinetics of chromium(III) transport through the double-carrier supported liquid membrane
作者： Jakub Rajewski , Paulina Łobodzin , Paweł Religa
DOI: 10.5277/PPMP160108
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摘要: The kinetics of chromium(III) transport through a supported liquid membrane containing both di-(2-ethylhexyl) phosphoric acid (D2EHPA) and bis-(2,4,4-trimethylpentyl) phosphinic (Cyanex272) as an ions carrier was investigated. It found that under characteristic concentration the carriers into organic phase provides much higher efficiency than only one extractants. In studied system optimal in is 0.16 mol/dm 0.9 for Cyanex272 D2EHPA, respectively. Moreover, authors indicate D2EHPA can act individual membrane. case stable structures with are formed membrane, which prevents effective re-extraction. Additionally, intensive stirring aqueous another factor has positive influence on double-carrier Increasing rate up to 1200 rpm shortens process time allows total re-extraction chromium.
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