Selective Removal of Copper from an Aqueous Solution Using Ligand-Modified Micellar-Enhanced Ultrafiltration Using an Alkyl-β-diketone Ligand

The partitioning of emulsifiers in o/w emulsions: A comparative study of SANS, ultrafiltration and dialysis

“…During UF, the additional transfer of emulsifier through the membrane is ascribed to a concentration polarisation above the membrane and the migration of the emulsifier onto the pore surface [11]. Monomer concentrations determined in the present study are in the same magnitude as reported in the literature [11,35,36]. As described by Christian et al [5], the surfactant concentration in the permeate cell of a dialysis experiment becomes close to the cmc after some hours, and thereafter increases very slowly over time.…”

Recovery of surfactant SDS and Cd2+ from permeate in MEUF using a continuous foam fractionator

“…Few studies have been conducted on the leakage of surfactant monomers (surfactant molecules not in the micelle form) through the ultrafiltration membrane. This can add substantial expense to the separation or make the process effluent stream environmentally unacceptable [5][6][7].…”

Metal ion extraction in microheterogeneous systems

“…When an acidic chelating agent is involved, adding acid allows one to back extract the metal [42]. By adding a strong complexing hydrophilic agent, copper and cadmium have been back-extracted from SDS micelles [43].…”