Bio-Emulsion Liquid Membrane (Bio-ELM) Synthesis, by using seven different vegetable oils for wastewater treatment

Abstract Generally, Emulsion Liquid Membrane (ELM) consists of two phases the first one is the mobile phase consists of three components surfactant, carrier, and diluent. The second phase is an internal phase which consists of a stripping agent. In ELM use of bio-based materials can make membranes environmentally friendly called Bio-Emulsion Liquid Membrane (Bio-ELM). The utilization of Bio-ELM, for dye removal from aqueous solution. In this work, an emulsifier/surfactant span80, carrier n-heptane, and diluent jojoba, clove, sesame, soybean, olive, rosemary, and peppermint oil were used. Jojoba oil-based ELM removed maximum methylene blue dye as compared with other oils, so throughout work, jojoba oil ELM was used. Influence of operating conditions that affect Bio-ELM performance; Effect of surfactant concentration, carrier and stripping agent concentration, emulsification time, treat ratio, stirring speed, etc. together with initial dye concentration were investigated.