Separation of anionic surface-active agents in an integrated ion exchange-sedimentation-ultrafiltration purification system

• Autorzy: Kowalska I.
• Języki publikacji: EN

Abstrakty

EN

The efficiencies of separation of anionic surface-active agents (ASAAs) from aqueous solutions below the critical micelle concentration were determined in an integrated purification system combining ion exchange, sedimentation and ultrafiltration. The tests were carried out using five types of anion-exchange resins (strongly and weakly basic) and flat polyethersulfone membranes with cut-off values of 5, 10 and 30 kDa. Combination of ion exchange and low-pressure membrane separation processes was found to facilitate effective separation of ASAAs from aqueous solutions below the critical micelle concentration. Integration of both unit processes was observed to be most beneficial in the case of membrane with the highest cut-off (30 kDa), which was characterized by low ASAA retention factors when ultrafiltration was carried out as a standalone process. The presence of the ion-exchange resin was also found to allow a significant reduction in membrane fouling and retention of high hydraulic efficiency.

Słowa kluczowe

EN

ion exchange; ultrafiltration; purification; anion exchange resins; critical micelle concentration; anionic surfactants

PL

wymiana jonowa; ultrafiltracja; oczyszczanie; żywica anionowymienna; krytyczne stężenie micelarne; anionowa substancja powierzchniowo czynna

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2010
• Tom: Vol. 36, nr 3
• Strony: 33--42
• Opis fizyczny: bibliogr. 20 poz.

Twórcy

autor

Kowalska I.

• Wrocław University of Technology, Institute of Environment Protection Engineering, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław,

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