Evaluation of effectiveness of adsorption process in removal of surfactants from water

• Autorzy: Kaleta J.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of laboratory tests on the possibilities of utilizing active carbons produced in Poland (WD-ekstra, WG-12, WG-15, AG-5 and DTO) for removing surfactant substances from water. The objective of the tests was to arrive at quantitative formulation of the adsorption process as well as to determine the effect of various factors on the process. Attempt was undertaken to cope with the tasks set in the study purpose using model experimental setups. Model solution with anionic surfactant, Aerosol OT-100, in the concentration of 5.00 mg/dm3, prepared using distilled water, was applied as adsorbate. The processes of adsorption, conducted in a batch mode, were best described by Freundlich isotherms. The adsorption capacity of the active carbons tested was calculated on the basis of the isotherms. The flow conditions were created by column filtration method. On the basis of the results obtained, the breakthrough curves, the so-called isoplanes, were prepared and served in turn to determine the adsorption capacities under flow conditions. The DTO carbon exhibited the highest values of adsorption capacities, as determined under both no flow and flow conditions. The exit curves (isoplanes) were also utilized to determine the mass penetration zone (the adsorption front height), as well as to calculate the rate of mass-exchange zone advance. The adsorption front height for the carbons tested was five times lower than the adsorption bed height, thus confirming a high effectiveness of active carbons in detergent removing.

Słowa kluczowe

EN

adsorption; water purification; surfactants; detergents

PL

adsorpcja; oczyszczanie wody; węgiel aktywny; związki powierzchniowo czynne; detergenty

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2010
• Tom: Vol. 36, nr 1
• Strony: 103--112
• Opis fizyczny: bibliogr. 9 poz.

Twórcy

autor

Kaleta J.

• Department of Water Protection and Purification, Technical University of Rzeszów, al. Powstanców Warszawy 6, 35-959 Rzeszów,

Bibliografia

• [1] BASAR C.A., KARAGUNDUZ A., CAKICI A., KESKINLER B., Removal of surfactants by powdered activated carbon and microfiltration, Wat. Res., 2004, No. 38, 2117–2124.
• [2] CSERHATI T., FORGACS E., OROS G., Biological activity and environmental impact of anionic surfactants, Environmet International, 2002, No. 28, 337–348.
• [3] GALASSIS S., GUZZELLA L., MINGAZZINI M., VIGANO L., CAPRI S., SORA S., Toxical and chemical characterization of organic micropollutants in rivier Po waters (Italy), Wat. Res., 1992, No. 1, 19–27.
• [4] GRANT R.L., YAO C., GABOLDON D., ACOSTA D., Evaluation of surfactant cytotoxicity potential by primary cultures of ocular tissues: I. Characterization of rabbit corneal epithelial cells and initial injury and delayed toxicity studies, Toxicology, 1992, No. 76, 153–176.
• [5] KALETA J., Detergenty w środowisku wodnym, Inżynieria i Ochrona Środowiska, Politechnika Częstochowska, Częstochowa, 2005, t. 8, nr 1, 99–115.
• [6] KOWAL A.L., ŚWIDERSKA-BRÓŻ M., Oczyszczanie wody, PWN, Warszawa–Wrocław, 1996.
• [7] NARKIS N., BEN-DAVID B., Adsorption of non-ionic surfactants on activated carbon and mineral clay, Wat. Res., 1985, No. 19, 815–824.
• [8] Rozporządzenie Ministra Środowiska z dnia 27 listopada 2002 r w sprawie wymagań, jakim powinny odpowiadać wody powierzchniowe wykorzystywane do zaopatrzenia ludności w wodę przeznaczoną do spożycia (DzU, Nr 204, poz. 1728).
• [9] VERGE C., MORENO A., Effects of anionic surfactants on Daphna magna, Tenside Surfactants Deterg., 2000, No. 37, 172–175.