EFFECT OF CARRIER-SOLVENT COMBINATION AND STRIPPING SOLUTIONS ON ZINC TRANSPORT BY SUPPORTED LIQUID MEMBRANE
S Altin, Melih Ozguven
article (Uluslararası, Hakemli) | Yazar(lar): S Altin, Melih Ozguven | Yıl: 2011 | Dergi/Kurum: FRESENIUS ENVIRONMENTAL BULLETIN | İndeks: WOS.SCI | Anahtar Kelimeler: Supported liquid membrane, zinc, transport, Aliquat336, metal removal — Özet: This study analyzed the zinc transport in supported liquid membrane (SLM)
This study analyzed the zinc transport in supported liquid membrane (SLM) systems in which different anionic (Aliquat336) and cationic (D2EHPA) carriers, different solvents (kerosene and toluene) and different feed (deionized water and HC1) / stripping solutions (H(3)PO(4), HCl and H(2)SO(4)) were used. The results were modeled according to steady state (Fick's first law) and non-steady state kinetics approaches and the concordance of the models was discussed. It was observed from the experimental studies that 80.4 % zinc transport could be achieved when deionized water was used as feed solution, kerosene/ D2EHPA (0.01 M) as membrane solution combination and H(3)PO(4) (0.5 M) as stripping solution. Whilst the zinc transport efficiency was found to be 86.5 % when HCl (1.0 M) was used as feed solution, toluene-Aliquat336 (0.02 M) as membrane solution combination and HCl (0.5 M) as stripping solution. Modeling studies established that the non-steady state approach better represented zinc transport. It was therefore concluded that the zinc transport mechanism was affected by interface reactions rather than diffusion.