This powerpoint presentation begins by providing a brief overview of factors impacting microbial
transport and fate in porous media. Microorganisms and surrogates studied included
C. parvum oocysts,
B. subtilis spores, and
4.5 µm microspheres. Experimental design included:
10cm and 20 cm length columns;
column orientation - vertical and horizontal;
media -
composition: >99% silica,
size range: ~0.2 - 1.2 mm,
d50: 0.2 mm and 0.6 mm, and
UC: 1.5 and 2.2;
DOM: 0 mg/L and 5 mg/L;
IS: 1mM and 100 mM KCl; and,
Rates: 1 m/d, 10 m/d, 40m/d. Preliminary conclusions indicate the following: column design can impact observed microoganism and
transport surrogate removals by filtration at water
velocities < ~10 m/d;
the presence of higher levels of NOM may counteract
the impact of column orientation (further investigation
required); and,
ionic strength can impact observed microoganism and
transport surrogate removals by filtration at water
velocities < ~10 m/d. Includes figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 2.1 MB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 17 |
| Published : | 11/01/2008 |
