Use of Micellar-Enhanced Ultrafiltration to Remove Dissolved Organics from Aqueous Streams

Ultrafiltration of Surfactant Solutions

“…A surfactant added to the aqueous stream forms micelles which bind pollutant molecules. These micelles, having a large molecular weight, are retained by the membrane while monomeric surfactants with concentrations close to critical mi- 1 To whom correspondence should be addressed. E-mail: jan.szymanowski@ put.poznan.pl.…”

“…Micellar-enhanced ultrafiltration (MEUF) has been proposed for water cleanup. The effectiveness of MEUF in removing organic compounds (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17), including phenols (1)(2)(3)(4)(5)(6)(7)(8), from aqueous streams is due to the fact that surfactant micelles containing these pollutants are too large to pass through the pores of the ultrafilter. A surfactant added to the aqueous stream forms micelles which bind pollutant molecules.…”

Ultrafiltration and Alumina Adsorption of Micelles for the Preconcentration of Copper(II) in Water

“…This process has been studied for the removal of organic pollutants and heavy metal ions from water. [3][4][5][6][7] To the best of our knowledge, however, MEUF has not been used for the preconcentration of trace metals at ng ml -1 levels before the instrumental determination steps.…”

Removal of Radioactive Cations and Anions from Polluted Water Using Ligand-Modified Colloid-Enhanced Ultrafiltration

“…A low concentration of surfactant is present in monomeric form and passes through the membrane upon ultrafiltration. [17,18] However, surfactant is required only when some organic material needs to be solubilized in the micellar interior. For the contaminated solutions of current interest the problem of monomer leakage can be eliminated by utilizing a water-soluble polyelectrolyte to replace the surfactant.…”