Separation of copper and nickel from synthetic wastewater by polymer inclusion membrane containing di(2-ethylhexyl)phosphoric acid

Ncib, Sana; Chibani, Amel; Barhoumi, Afef; Larchet, C.; Dammak, L.; Elaloui, Elimame; Bouguerra, Wided

doi:10.1007/s00289-022-04634-z

Cited by 5 publications

(1 citation statement)

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“…found that cross‐linking PIM containing NPOE as plasticizer separated zinc, copper and nickel in the same order found in this work. For the separation of Ni II and Cu II from ternary mixture, the result could be explained by the size of the hydrated ions of nickel and copper, as the radius of the hydrated Cu II (i. e., 0.206 nm) is smaller compared to the radius of the hydrated Ni II (i. e., 0.302 nm) [49] . Therefore, Ni II ions are surrounded by a bigger number of water molecules than Cu II ions which facilitate the interaction between the D2EHPA and copper ions that are more hydrophobic than Ni II ions.…”

Section: Resultsmentioning

confidence: 99%

Effect of Plasticizer Type on Polymer Inclusion Membranes Properties and Performance for Zinc Separation

Mahmoud,

Othmen,

Ncib

et al. 2024

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The goal of the present study is to evaluate the effect of plasticizer in PIMs properties and performance for zinc separation. Membranes were prepared by casting a solution containing poly (vinyl chloride) (PVC) as base polymer, di (2‐ethylhexyl) phosphoric acid (D2EHPA) as carrier, and 2‐nitrophenyl octyl ether (NPOE) or tris (2‐butoxyethyl) phosphate (TBEP) as plasticizers. The newly developed PIMs transported practically all ZnII ions from a feed phase at pH 5 to a 1 M H2SO4 stripping phase. The results showed that the transport flux and its efficiency depend on the chemical nature of the plasticizer. It can be perceived that NPOE (with dielectric constant of 23.1) produced the highest transport flux of zinc (J0=1.62±0.05 10−5 mol m−2 s−1). The single ion transport of zinc was significantly higher than the binary and ternary mixtures. In ternary solution, the transport efficiency for metal ions was in the order of ZnII>CuII>NiII. The transport efficiency of the PVC/NPOE/D2EHPA membrane remained constant until the seventh use. The findings of this work will allow the invention of advanced separation technology ensuring the sustainability of metal resources.

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Section: Resultsmentioning

confidence: 99%