Abstract
The transport of Zn(II) ions across polymer inclusion membranes (PIMs) with acetylacetone (ACAC) or di(2-ethylhexyl)phosphoric acid (D2EHPA) as carriers was studied. Polymeric membranes consisting of polyvinylchloride (PVC) as the support, bis(2-ethylhexyl)adipate (DAO) as plasticizer, and ACAC or D2EHPA as ion carriers were investigated. The highest recovery factors for Zn(II) ions were observed in the case of a membrane containing 20% acac (99.6%) and 60% D2EHPA (56.3%). The prepared PIMs were examined using atomic force microscopy (AFM) techniques. Their mechanical properties were also determined. The influence of membrane morphology and mechanical properties on the zinc transport process was discussed.
Highlights
Polymer inclusion membranes (PIMs) were first prepared as Solvent Polymeric Membranes (SPMs), in 1963, by Bloch [1]
Arslana et al proved that sodium diethyldithiocarbamate (NaDDTC) is an effective, innovative zinc ion carrier, thanks to which transport across the membranes based on cellulose triacetate (CTA) and o-NPOE resulted in the 96% recovery of Zn [39]
To determine pHmeasured of the feed phase composition of the receiving transported across the membrane was calculated from the formula: preliminary transport test with polymer inclusion membranes (PIMs) doped with 20% of ACAC (2) was performed
Summary
Polymer inclusion membranes (PIMs) were first prepared as Solvent Polymeric Membranes (SPMs), in 1963, by Bloch [1]. The authors of the document had in mind to obtain a good ecological status of waters by various methods, by reduction or, if possible, elimination of the emissions of highly hazardous substances formed in industrial processes, such as heavy metals, including lead, cadmium, chromium, copper, nickel, or zinc This legislative measure clearly indicates the necessity of devising procedures resulting in a reduction of environmental emissions of these metals [28]. PIMs. Arslana et al proved that sodium diethyldithiocarbamate (NaDDTC) is an effective, innovative zinc ion carrier, thanks to which transport across the membranes based on CTA and o-NPOE resulted in the 96% recovery of Zn [39]. The structure of the PVC membranes has so far only been studied for commercial carriers (Aliquat 336, TOA, Cyphos® IL 104, D2 EHPA) [4,37,42]
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