02366nas a2200205   4500008004100000022001400041245008900055210006900144260011000213300001600323490000600339520156300345100002301908700002301931700002301954700002301977700002302000700002702023856011002050       2014                        eng d  a2046-206900aEmulsion ionic liquid membranes (EILMs) for removal of Pb(II) from aqueous solutions0 aEmulsion ionic liquid membranes EILMs for removal of PbII from a  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcOCT  a52316-523230 v43 a<p>Ionic liquids (ILs) are playing increasingly important roles in the membrane separation processes. The present manuscript discusses the removal of Pb(II) ions from aqueous solution using an emulsion ionic liquid membrane (EILM) process. Initially, the emulsion liquid membrane (ELM) was prepared by stirring strip phase (sulphuric acid) and organic phase (surfactant: span 80, extractant: D2EHPA, diluent: hexane) together under high speed agitation. Note that, the parameters of the ELM process such as emulsification speed, pH of the feed phase, treat ratio, extractant and surfactant concentrations were studied for the maximum removal of Pb(II) ions. The role of IL was explored by adding hydrophobic IL, octylmethylimidazole hexafluorophosphine ([OMIM][PF6]), in the organic phase. The performance of ELM with and without IL was compared on the basis of stability, enrichment factor and the removal efficiency for Pb(II). The results showed that the percentage of Pb(II) extraction was complete by the emulsion membrane with IL (EILM) in comparison to the 97% achieved by neat ELM. Further, the stability and the enrichment factor of the EILM were found to be 2-3 times greater than that of the ELM. The FT-IR spectroscopic analysis revealed that bond interactions between IL and membrane phase components avoided the coalescence of internal phase droplets and enhanced the emulsion stability. The results obtained in this work support the use of the IL [OMIM][PF6] as both a stabilizer and carrier for the overall improvement of the ELM process.</p>1 aLende, Avinash, B.1 aDinker, Manish, K.1 aBhosale, Vikas, K.1 aKamble, Sanjay, P.1 aMeshram, Pawan, D.1 aKulkarni, Prashant, S.  uhttps://library.ncl.res.in/content/emulsion-ionic-liquid-membranes-eilms-removal-pbii-aqueous-solutions-001967nas a2200241   4500008004100000022001400041245009100055210006900146260000800215300001100223490000700234520119300241653001701434653001301451653001901464653001501483653001501498100002301513700002401536700002301560700002701583856011501610       2019                        eng d  a2214-714400aSeparation of nitroaromatics from wastewater by using supported ionic liquid membranes0 aSeparation of nitroaromatics from wastewater by using supported   cDEC  a1009250 v323 a<p>Nitroaromatics have been released into wastewater during its production and application, thus, contaminating the ecosystem. The stringent discharge limits of industrial effluents have led to the development of sustainable technologies for removal of nitroaromatics from wastewater. In the present investigation, separation of nitroaromatic compounds such as TNT, TNP and Tetryl from model wastewater was investigated by using supported ionic liquid membrane (SILM) process. Various aliquat 336 based ionic liquids (ILs) were synthesised and characterized, and immobilized in PTFE and PVDF supports for the preparation of SILMs. The key parameters such as type of IL and striping phase, feed phase pH, selectivity for SILM, extraction kinetics and reuse of SILM were studied, in detail. The size of IL-anion plays an important role in removal process. The SILM was found to be selective for TNP over other nitroaromatics. Maximum separation of TNP (&lt; 95%) was achieved with IL, [A336][SCN] within 12 h. Selectivity and reuse of the membrane indicate the potential of SILM technology as a sustainable chemical process for the treatment of nitroaromatics contaminated wastewater.</p>
10aIonic liquid10aMembrane10aNitroaromatics10aSeparation10awastewater1 aBhosale, Vikas, K.1 aChana, Harpreet, K.1 aKamble, Sanjay, P.1 aKulkarni, Prashant, S.  uhttps://library.ncl.res.in/content/separation-nitroaromatics-wastewater-using-supported-ionic-liquid-membranes