In the present work studies were carried out to extract a cationic dye (Methylene Blue MB) from an aqueous solution using emulsion liquid membrane process (ELM). The organic phase (membrane phase) consists of Span 80 as emulsifier. sulfuric acid solution as stripping agent and hexane as diluent. In this study. https://parisnaturalfoodes.shop/product-category/milk-kefir-grains/