Removal of Lead(II) from Aqueous Solution Using Triton X-114 in the Presence of Alanine or Phenylalanine as Biodegradable System
| Autor: | Mortada Daaou, Boumediene Haddou, Christophe Gourdon, Mohammed Kasmi, Abdelkader Benderrag, Jean Paul Canselier |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Alanine
Aqueous solution Chemistry General Chemical Engineering Extraction (chemistry) Phenylalanine 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Box–Behnken design 0104 chemical sciences Ion Nonionic surfactant 0210 nano-technology Nuclear chemistry |
| Zdroj: | Tenside Surfactants Detergents. 57:521-533 |
| ISSN: | 2195-8564 0932-3414 |
| DOI: | 10.3139/113.110711 |
| Popis: | The Cloud Point Extraction (CPE) of Pb(II) ion, using Triton X-114/ alanine and Triton X-114/phenyalanine as biodegradable systems, was carried out. The experimental results are expressed by four responses to surfactant concentration, amino acid concentration and temperature variations: extent of solute extraction (E), remaining solute (Xm,w) and surfactant (Xt,w) concentrations in dilute phase and volume fraction of coacervate (}C) at equilibrium. An empirical smoothing method was used, where the results were represented on three dimensional plots using the Box-Behnken design (BBD) and the response surface methodology (RSM). High extraction efficiencies (94% with alanine and 98% with phenylalanine) are reached in optimal conditions. Thereby, solute concentration reduction in the dilute phase is about 4 and 12 times with alanine and phenylalanine, respectively. The pH effect is also studied. Finally, the possibility of recycling the surfactant/amino acid system by pH change is proved. |
| Databáze: | OpenAIRE |
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