Removal of red 3BS Dye from wastewater using emulsion liquid membrane process

Abstract

Emulsion Liquid Membrane (ELM) is one of the process that has very high potential for industrial wastewater treatment of dyes. In this research, Red 3BS dye was extracted from simulated wastewater using Tridodecylamine as the carrier agent, sodium hydroxide as the stripping agent, kerosene as the diluent and span 80 was used as emulsifier. The important parameters affecting the Emulsion Liquid Membrane (ELM) extraction process including external phase concentration, treat ratio (emulsion/ external phase), concentration of carrier and agitation speed were investigated. The results show that the Red 3BS dye can be extracted almost 70% from simulated wastewater. The highest Red 3BS dye extraction was obtained by using 0.07 M Tridodecylamine, 5% (w/v) Span 80, 250 rpm agitation speed, 0.5 M thiourea in 1.0 M sodium hydroxide as the stripping agent, 1:3 treat ratio and kerosene as the diluent. As a conclusion, the Emulsion Liquid Membrane has a high potential in the extraction of dye from wastewater.