화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.35, No.2, 518-525, February, 2018
DOI10.1007/s11814-017-0280-1  Export Citation
Comparative study of neodymium recovery from aqueous solutions by polyelectrolytes assisted-ultrafiltration
Mahria Hammami, Dorra Jellouli Ennigrou†, Karima Horchani-Naifer, and Mokhtar Ferid
  • Physical Chemistry Laboratory of Mineral Materials and Their Applications, National Center for Research in Materials Sciences, Technopark Borj Cedria, P. O. Box 73-8027 Soliman, Tunisia
E-mail:
The Polyelectrolyte-Assisted UltraFiltration technique has demonstrated its effectiveness in the recovery of neodymium from aqueous solutions. In this study, poly(sodium 4-styrenesulfonate) and polyethylene glycol were selected as the complexing agents. The ultrafiltration experiments were operated using a laboratory scale ultrafiltration system equipped with a polyethersulfone membrane. The effects of various parameters such as polyelectrolyte concentration, applied pressure, NaCl concentration, pH and operating time on neodymium retention and permeation flux were studied. It was observed that the better result was obtained with PSS. The maximum retention was observed at 2×10.4 mol L.1 and 3 bars for both polyelectrolytes. The results showed that the retention increased with the increase of pH. The ionic strength effect has shown a retention decrease with the increasing of salt concentration. Finally, the permeate flux declined following the increment in volume concentration factor, the retention remained constant around 98%.
Keywords:Neodymium Recovery;Polymer-assisted Ultrafiltration;Poly(sodium 4-styrenesulfonate);Polyethylene Glycol
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