Title: Removal of trivalent chromium from dilute aqueous solutions and industrial effluents using Emulsion Liquid Membrane technique

Authors: S. Venkatesan, K.M. Meera Sheriffa Begum

Addresses: Department of Petrochemical Technology, Anna University, Tiruchirappalli 620 024, Tamil Nadu, India. ' Department of Chemical Engineering, National Institute of Technology, Tiruchirappalli 620 015, Tamil Nadu, India

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.

Keywords: emulsion liquid membrane; ELM; pertraction; surfactants; carrier; electroplating effluent; tannery effluent; batch extraction; trivalent chromium; industrial effluents; wastewater treatment.

DOI: 10.1504/IJEE.2010.029832

International Journal of Environmental Engineering, 2010 Vol.2 No.1/2/3, pp.250 - 268

Published online: 02 Dec 2009 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article