کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
596617 | 1454043 | 2008 | 6 صفحه PDF | دانلود رایگان |
The removal of palladium, present as Pd(II), from aqueous solutions has been performed by a micellar-enhanced ultrafiltration process employing the cationic surfactant dodecyl-trimethylammonium chloride (DTAC). The effect of surfactant concentration and solution pH were investigated. Addition of DTAC at concentrations above the critical micellar concentration results in Pd(II) removal exceeding 95%.The possibility of Pd(II) recovery from the retentate was also examined. After the ultrafiltration process, metal ions are concentrated on the micelle surface. The addition of a strong electrolyte can be very useful to expel the metal from the micelles. Our results show that addition of aqueous MgCl2 at a concentration of 0.8 M enables us to recover palladium with a yield of 66%.
Journal: Colloids and Surfaces A: Physicochemical and Engineering Aspects - Volume 329, Issues 1–2, 15 October 2008, Pages 12–17