Cake porosity analysis using 1D-3D fractal dimensions in coagulation-microfiltration of NOM

Water Science and Technology : a Journal of the International Association on Water Pollution Research
G S Raspati, T O Leiknes

Abstract

Fouling during coagulation-ceramic microfiltration of natural organic matter was investigated. Two process configurations (inline coagulation (IC) and tank coagulation (TC)) and two process conditions (types of coagulants-aluminum-based PAX and iron-based PIX-and G-values) were studied. The rate of irreversible fouling corresponding to the increase of initial transmembrane pressure after backwash of IC-PAX was lowest followed by TC-PAX and TC-PIX, while the performance of IC-PIX was found worst. The 1D and 2D fractal analysis revealed that flocs from IC were morphologically different from those of TC, leading to different filtration characteristics. The 3D fractal analysis revealed two groups of morphologically similar flocs: one led to successful filtration experiments, whereas the other led to unsuccessful ones. Cake porosity was found dependent on the floc morphology. Thus, such an approach was found complementary with fouling analysis by means of a membrane fouling model and minimization of fouling phenomenon was achieved by combining the two approaches.

References

Sep 8, 2001·Water Research·X Y Li, B E Logan
Mar 5, 2004·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·F Maggi, J C Winterwerp
Sep 30, 2005·Environmental Science & Technology·Sangyun A LeeT David Waite
May 11, 2006·Environmental Science & Technology·Pyung-Kyu ParkSangho Lee

❮ Previous
Next ❯

Related Concepts

Related Feeds

Blood Clotting Disorders

Thrombophilia includes conditions with increased tendency for excessive blood clotting. Blood clotting occurs when the body has insufficient amounts of specialized proteins that make blood clot and stop bleeding. Here is the latest research on blood clotting disorders.