Abstract
This paper reports a study of batch extraction of trivalent chromium from dilute aqueous solutions as well as electroplating and tannery effluent by Emulsion Liquid Membrane (ELM) technique. An experimental study was performed to optimise the pH of the aqueous external phase based on distribution coefficient of solute between aqueous external phase and organic (membrane) phase. The batch extraction was carried out under various experimental conditions such as agitation time, agitation speed, treat ratio (E/M ratio), solute concentration in the feed phase, internal phase reagent concentration and carrier concentration in membrane phase on the percentage recovery of trivalent chromium from dilute aqueous solutions and industrial effluents.
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