Permeation of As (III) from hydrochloric acid solutions using an o-xylene supported liquid membrane

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Abstract

An o-xylene-ME-24 supported liquid membrane was prepared for the permeation of As(III) in a hydrochloric acid solution. The partition coefficients of As (III) at various HCl concentrations were measured. The overall permeation coefficients obtained were 0.54-1.9X 10-3 cm/s, depending on HCl concentration of the feed phase and the stirring speed. The overall permeation coefficient for the feed phase of 9.6 M HCl levelled off as the stirring speed was increased beyond 800 min-1. The minimum feed aqueous film resistance obtained was 480 s/cm, and the membrane resistance was 340 s/cm. The governing resistance of As(III) permeation in the system is the feed aqueous film resistance when the feed phase HCl concentration is greater than 7.2 M.

Original languageEnglish
Pages (from-to)7-18
Number of pages12
JournalHydrometallurgy
Volume27
Issue number1
DOIs
Publication statusPublished - 1991 Jan 1

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

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