초록 ▼

Contaminated aqueous systems can be cleaned using an ultra-filtration system that allows for high recovery yields of the surfactant employed therein for recycle and reuse. The system employs specific nonionic surfactants which remain polar and solvated at the higher operating temperatures of the sys

Contaminated aqueous systems can be cleaned using an ultra-filtration system that allows for high recovery yields of the surfactant employed therein for recycle and reuse. The system employs specific nonionic surfactants which remain polar and solvated at the higher operating temperatures of the system. The surfactant/contaminant containing aqueous system is ultra-filtered resulting in the surfactant passing through with the permeate at extremely high yields for recovery and reuse.

대표청구항 ▼

[ What we claim is:] [1.] A process for the recovery of surfactants from an aqueous surfactant/contaminant-containing solution wherein said solution is ultrafiltered at a pressure of less than 45 psi in order to recover said surfactant at high yields from the permeate for recycle and re-use, said pr

[ What we claim is:] [1.] A process for the recovery of surfactants from an aqueous surfactant/contaminant-containing solution wherein said solution is ultrafiltered at a pressure of less than 45 psi in order to recover said surfactant at high yields from the permeate for recycle and re-use, said process comprising the use of a nonionic surfactant that remains polar and solvated at the operating temperature of the ultrafiltration system.