Mass-transfer model for humic acid removal by ultrafiltration

• Autorzy: Galambos I. , Csiszar E. , Bekassy-Molinar E. , Vatai G.
• Języki publikacji: EN

Abstrakty

EN

Humic acid (HA) molecules present in the soil dissolve in the water and can be found also in the well water. They have different size, molecular weight and structure. It is important to remove these molecules because they build carcinogenic by-products when they react with disinfectants. Membrane filtration can be an effective method of removing humic acid from water. Earlier experiments have proved that ultrafiltration membranes are proper for this task. The aim of this study was to find a new formula which helps to design a well-water filtration. We needed to model the mass transfer during the membrane filtration and to calculate the mass-transfer coefficient. The calculations were carried out in two ways: by using the results of laboratory measurements and criterial equations and by using heat-transfer analogy. The results reveal that the values measured and calculated are in agreement, the heat-transfer analogy can be applied and the equations are useful for designing the membrane for drinking water treatment.

Słowa kluczowe

EN

mass-transfer model; humic acid; membrane filtration; drinking water; natural organic matter; disinfection by-product

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2005
• Tom: Vol. 31, nr 3-4
• Strony: 145--152
• Opis fizyczny: Bibliogr. 11 poz., tab., rys.

Twórcy

autor

Galambos I.

• Corvinus University of Budapest, H-1118 Budapest, Ménesi út. 44, Hungary

autor

Csiszar E.

• Corvinus University of Budapest, H-1118 Budapest, Ménesi út. 44, Hungary

autor

Bekassy-Molinar E.

• Corvinus University of Budapest, H-1118 Budapest, Ménesi út. 44, Hungary

autor

Vatai G.

• Corvinus University of Budapest, H-1118 Budapest, Ménesi út. 44, Hungary

Bibliografia

• [1] WANG Y., COMBE C., CLARK M., The effect of pH and calcium on the diffusion coefficient of humic acid, Journal of Membrane Science, 2001, 183, pp. 49–60.
• [2] ALBORZFAR M., JONSSON G., GRON C., Removal of natural organic matter form two types of humic ground waters by nanofiltration, Water Research, 1998, 32 (10), pp. 2983–2994.
• [3] DOMANY Z., GALAMBOS I., VATAI GY., BÉKÁSSY-MOLNÁR E., Humic substances removal from drinking water by membrane filtration, Desalination, 2002, 145, pp. 333–337.
• [4] GALAMBOS I., VATAI GY., BÉKÁSSY-MOLNÁR E., Membrane screening for humic substances removal, Desalination, 2004, 162, pp. 111–116.
• [5] PERMINOVA I., FRIMMEL F., KOVALEVSKII D., ABBT-BRAUN G., KUDRYAVTSEV A., HESSE S., Development of a predictive model for calculation of molecular weight of humic substances, Water Research, 1998, 32 (3), pp. 872–881.
• [6] MULDER M., Basic Principles of Membrane Technology, Kluwer Academic Publishers, The Netherlands, 1997.
• [7] TREYBAL R.E., Mass-transfer operations, McGraw-Hill Book Company, New York.
• [8] FALTIN H., Műszaki hőtan (in Hungarian), Műszaki könyvkiadó, Budapest, 1970.
• [9] PERRY J.H., Vegyészmérnökök kézikönyve (in Hungarian), Műszaki Könyvkiadó, Budapest, 1968.
• [10] CHO J., AMY G., PELLEGRINO J., Membrane filtration of natural organic matter: initial comparison of rejection and flux decline characteristics with ultrafiltration and nanofiltration membranes, Water Research, 1999, 33 (11), pp. 2517–2625.
• [11] SEIDEL A., ELIMELECH M., Coupling between chemical and physical interactions in natural organic matter (NOM) fouling of nanofiltration membranes: implications for fouling control, Journal of Membrane Science, 2002, 203, pp. 245–255