Structure and microbial diversity of biofilms on different pipe materials of a model drinking water distribution systems
Artykuł w czasopiśmie
MNiSW
20
Lista A
| Status: | |
| Autorzy: | Rożej Agnieszka, Cydzik-Kwiatkowska Agnieszka, Kowalska Beata, Kowalski Dariusz |
| Rok wydania: | 2015 |
| Wersja dokumentu: | Drukowana | Elektroniczna |
| Język: | angielski |
| Numer czasopisma: | 1 |
| Wolumen/Tom: | 31 |
| Strony: | 37 - 47 |
| Data nominalna: | 2014 |
| Web of Science® Times Cited: | 62 |
| Scopus® Cytowania: | 68 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| The experiment was conducted in three model drinking water distribution systems (DWDSs) made of unplasticized polyvinyl chloride (PVC), silane cross-linked polyethylene (PEX) and high density polyethylene (HDPE) pipes to which tap water was introduced. After 2 years of system operation, microbial communities in the DWDSs were characterized with scanning electron microscopy, heterotrophic plate count, and denaturing gradient gel electrophoresis. The most extensive biofilms were found in HDPE pipes where bacteria were either attached to mineral deposits or immersed in exopolymers. PVC biofilm did not contain mineral deposits but was made of single cells with a high abundance of Pseudomonas aeruginosa, which can be harmful to human health. The members of Proteobacteria and Bacteroideteswere found in all biofilms and the water phase. Sphingomonadales and Methylophilaceaebacteria were found only in PEX sam-ples, whereas Geothrix fermentans, which can reduce Fe(III), were identified only in PEX biofilm. The DNA sequences closely related to the members of Alphaproteo-bacteria were the most characteristic and intense ampli-cons detected in the HDPE biofilm |
