Microfluidic solvent extraction of Ce (III) and Pr (III) from a chloride solution using EHEHPA (P507) in a serpentine microreactor

Shaohua Yin, Kaihua Chen, C. Srinivasakannan, Shiwei Li, Junwen Zhou, Jinhui Peng, Libo Zhang

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Extractive and separation of Pr/Ce using a Y-junction serpentine microreactor, with 2-ethylhexyl phosphoric acid mono-2-ethylhexyl ester (EHEHPA, P507), has been investigated. The results clearly indicate separation factor of Pr/Ce (> 3) is to be higher in the microfluidic extraction as compared to separation factor of around 2 to 3 for batch systems. The optimized residence time of 12 s in micro-flow is much less than that in batch system (≅ 300 s). The extraction rates for Pr and Ce are found to match first order kinetics with the rate constants being 0.2649 s− 1 and 0.2279 s− 1, respectively, which are > 20 times higher than those for batch extraction. The volumetric mass transfer coefficients (KLa) for various operating conditions vary between 0.007 and 0.57 s− 1, which decrease with increase in channel size (channel width and length). The experimentally mass transfer coefficients are compared with those with conventional extractors such as mixer settler and centrifugal extractors.

Original languageBritish English
Pages (from-to)266-272
Number of pages7
JournalHydrometallurgy
Volume175
DOIs
StatePublished - Jan 2018

Keywords

  • Extraction and separation
  • Mass transfer
  • Microreactor
  • Pr/Ce

Fingerprint

Dive into the research topics of 'Microfluidic solvent extraction of Ce (III) and Pr (III) from a chloride solution using EHEHPA (P507) in a serpentine microreactor'. Together they form a unique fingerprint.

Cite this