title: [Ability to survive and interactions of selected bacterial species in activated carbon filters].
abstract: The survival and the interactions of selected, hygienically relevant bacterial species in activated carbon filters was investigated. The numbers of Escherichia coli, Pseudomonas aeruginosa and P. putida increased in previously sterilized filters. After inoculation all bacteria (10(6] were adsorbed. During a period of 6-10 days the filter effluent contained no detectable bacteria. After that the colony numbers increased to a constant level of 10(4)-10(5) colony forming units (CFU)/ml effluent and 10(6)-10(7) CFU/g activated carbon. Klebsiella pneumoniae and Streptococcus faecalis died off in the filter system. If the filters were inoculated simultaneously with two species, P. putida and P. aeruginosa remained at a constant level between 10(4) and 10(5) CFU/ml. E. coli was suppressed by P. aeruginosa and died off in the presence of P. putida. As in-vitro tests indicated, P. putida did not produce inhibitory substances against P. aeruginosa or E. coli. On the other hand, P. aeruginosa showed antagonistic activities against E. coli.
mesh_terms: D018407:Bacterial Physiological Phenomena; D001431:Bacteriological Techniques; D002606:Charcoal; D013293:Enterococcus faecalis / Q000502:physiology; D004926:Escherichia coli / Q000502:physiology; D005374:Filtration / Q000295:instrumentation*; D006801:Humans; D007711:Klebsiella pneumoniae / Q000502:physiology; D011549:Pseudomonas / Q000502:physiology; D011550:Pseudomonas aeruginosa / Q000502:physiology; D014871:Water Microbiology
chemical_list: D002606:Charcoal
vernacular_title: Uberlebensfähigkeit und Wechselwirkungen ausgewählter Bakterienarten in Aktivkohlefiltern.