@article {8850, title = {Effect of Corroded and non Corroded Pipe Materials on Biofilm Formation in Water Distribution Systems}, journal = {World Applied Sciences Journal}, volume = {34}, year = {2016}, month = {11/2016}, pages = {214-222}, type = {Research}, chapter = {214}, abstract = {The effect of pipe materials on biofilm formation in drinking water distribution system was studied
using simulated drinking water distribution system. Biofilm was grown on different pipe materials under laminar
flow rate (Reynolds number: 2000). The parameters analyzed were the numbers of cultivable bacteria using
chromogenic media. The impact of different pipe materials were assessed after the biofilms reached steady-state.
The total numbers of Salmonella Typhimuruim biofim was mostly higher than Listeria monocytogenes
biofim cells. The steady-state of L. monocytogenes and S. Typhimuruim biofilm gorwon on PVC, PP and PE
pipe materials was achieved in 70 days. While, steady-state biofilm formed in R material was at 60 days of
L. monocytogenes and 80 d ays of S. Typhimuruim. In addition to, steady-state biofilm formed in I pipe
material was achieved in 60 days of L. monocytogenes with total numbers of biofilm cells (108 CFU/cm2) and
70 days of S. Typhimuruim with total numbers of biofilm cells (109 CFU/cm2). In case of biofilm formed in Cu,
L. monocytogenes and S. Typhimuruim biofilm have no steady-state. These results concluded that, the plasticbased
materials are the most appropriate to be used for carrying the drinking water. While, the iron pipes are
not recommended for carrying water in DWDS.}, keywords = {Biofilm Pathogenic bacteria Pipe materials Flow rate Steady-state EPS}, doi = {10.5829/idosi.wasj.2016.34.2.81}, url = {https://www.idosi.org/wasj/wasj34(2)16/10.pdf}, author = {Bahaa A. Hemdan and M. Azab Elliethy} }