title: Study on a new surfactant for removal of phenol from wastewater by emulsion liquid membrane.
abstract: Removal of phenol from wastewater using emulsion liquid membrane (ELM) is studied in present study. A new polyamine-type surfactant was synthesized and used for stabilizing of the emulsion phase. The results for the emulsion made by the synthesized surfactant showed much better stability and performance in the separation process compared to that by conventionally used Span 80. To determine the optimum operation conditions, the effect of several parameters such as emulsifier concentration, concentration of NaOH in the internal phase, oil to internal phase volume ratio, mixing intensity, temperature, solvent type, and stabilizer concentration have been investigated. It was found that under the optimum conditions, more than 98% of phenol can be removed in a single-stage process. The removal efficiency can be increased to 99.8% in a two-stage process.
authors.affiliation: Chemistry and Chemical Engineering Research Center of Iran, P.O. Box: 14335-186, Tehran, Iran. mortaheb@ccerci.ac.ir
authors.forename: Hamid R
authors.initials: HR
authors.lastname: Mortaheb
authors.forename: Mohammad H
authors.initials: MH
authors.lastname: Amini
authors.forename: Fateme
authors.initials: F
authors.lastname: Sadeghian
authors.forename: Babak
authors.initials: B
authors.lastname: Mokhtarani
authors.forename: Hesam
authors.initials: H
authors.lastname: Daneshyar
mesh_terms: D004655:Emulsions; D008299:Maleic Anhydrides; D008567:Membranes, Artificial; D009821:Oils / Q000737:chemistry; D010636:Phenols / Q000302:isolation & purification*; D011073:Polyamines / Q000737:chemistry; D011095:Polyethylenes; D012972:Sodium Hydroxide / Q000737:chemistry; D013501:Surface-Active Agents / Q000737:chemistry*; D013696:Temperature; D014783:Viscosity; D014865:Waste Disposal, Fluid
chemical_list: D004655:Emulsions; D008299:Maleic Anhydrides; D008567:Membranes, Artificial; D009821:Oils; D010636:Phenols; D011073:Polyamines; D011095:Polyethylenes; D013501:Surface-Active Agents; D012972:Sodium Hydroxide