| Autor: |
Ncib, Sana, Chibani, Amel, Barhoumi, Afef, Larchet, Christian, Dammak, Lasaad, Elaloui, Elimem, Bouguerra, Wided |
| Předmět: |
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| Zdroj: |
Polymer Bulletin; Nov2023, Vol. 80 Issue 11, p12177-12192, 16p |
| Abstrakt: |
This paper describes a selective process of copper and nickel using a prepared polymer inclusion membrane (PIM) composed of 45 wt% cellulose triacetate (CTA), 40 wt% of di(2-ethylhexyl) phosphoric acid (D2EHPA) and 15 wt%. of acetylated kraft lignin (AKL), adopting as matrix modifier. To characterize the distribution of different constituents, membranes were characterized by attenuated total reflectance infrared spectroscopy (ATR-IR). The mechanical properties were also explored by examining the influence of D2EHPA concentration in PIM composition, and best membrane was obtained with using an amount of 40% wt. The surface and cross-sectional morphology of the membrane was inspected by scanning electron microscopy (SEM). The influence of feed phase pH and strip phase composition on removal performance was explored. Results indicate that the percentage of extraction is highly dependent on pH of the feed solution and the pH value is 5 for the maximum separation. The influence of nitric acid concentration in strip solution was examined, and it was found that the percentage of extraction and stripping is further increased due to the difference of driving force. The results indicated that PIM was able to extract 88% of Cu over only 25% of Ni. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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