Transport of Escherichia coli strains isolated from springs in Kampala, Uganda - Transport of Multiple Escherichia Coli Transport in Saturated Porous Media - page 103

7.4.3 Transport experiments and HYDRUS modeling
To characterize the transport of the E. coli strains isolated from springs, 40 randomly selected
strains were flushed through saturated quartz columns of 7 cm height. Maximum peak
relative breakthrough concentrations, (C/C 0 ) max , ranged from 0.06 to 0.89 representing a 1 log
unit variation, with 33 out of the 40 strains tested (82%) having a (C/C 0 ) max value greater than
0.5 ( Table 7.2 ; Fig.7. 3 ) .

1

FR01

FR02

0.8

IN01

0.6

IN03

FR04

0.4

SL01

SL20

0.2

0

0 2 4 6 8

Pore Volume (-)

Fig. 7.3: Examples of a number of breakthrough curves of E. coli strains with high

(C/C 0 ) max