Supported ionic liquid and polymer inclusion membranes for metal separation

Ionic liquids membranes for liquid separation: status and challenges

“…For the application of SILMs in metal extraction reported by Özevci et al , the [Bmim][NTf 2 ] IL served as the cation exchanger with the extracted metal complex to maintain the electrical neutrality. 161 Such behavior is unfavorable at the feed/membrane interface due to progressive IL dissolution in the aqueous phase. In case of ILPMs and PILMs, the functionalized ILs exhibited strong chemical interaction with the target component in the aqueous solutions, resulting in improved rejection ratio for specific metals or organic substances.…”

3D mesoporous polycalix-functionalized dual Brønsted–Lewis acidic double-charged DABCO-based ionic liquid: a powerful and recyclable supramolecular polymeric catalyst for the synthesis of spiro-fused[4H-pyran]

“…23 Also, PSILs are a developing trend as they include the unique features of ILs, i.e., mechanical and thermal stability, nonflammability, low volatility, and high activity under mild conditions that enhance the ability of the process. 24,25 Over recent decades, many attempts have been made to use PSILs as antimicrobial reagents 26 and lubricants, 27 in fuel desulfurization, 28 and as catalysts for different purposes 24,29 as well as in metal separation, 30 as adsorbents, 31 and so on.…”

Three- and Multi-Phase Extraction as a Tool for the Implementation of Liquid Membrane Separation Methods in Practice

“…Liquid membrane separations (bulk [ 1 , 2 , 3 ], supported [ 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ], emulsion [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 ]) combining extraction and stripping processes in a single mass-transfer unit allow the separation of species on their partition between two aqueous phases. Mass transfer occurs through an intermediate organic phase (mass-transfer medium).…”