STUDIES REGARDING THE FORMATION AND TEMPORAL DYNAMICS OF BACTERIAL BIOFILMS ON THE HYDROPHILE SURFACE OF GLASS IN STATIC AND DYNAMIC CONDITIONS
Journal Title: Journal of Science And Arts - Year 2010, Vol 13, Issue 2
Abstract
The biofilms represent communities of prokaryotes and eukaryotes that are formed in different types of hydrophile and hydrophobe surfaces determining the occurrence of microfouling, biocorrosion and the reduction of materials efficiency. The generation of biofilms was accomplished based on a comparative study using seawater as culture medium and glass slides as artificial support for the adherent cells. Thus, three experimental systems were used (containers, bioreactor and aquarium), which permitted the use of static and dynamic study methods. The temporal dynamics of a biofilm is accomplished quickly. Only three days after the immersion of the artificial substrate, a dense layer of cells is formed on the hydrophile surface of glass and 15-21 days later, depending on the thickness of the biofilm, detachment and dispersion phenomena occur. The formation of biofilms in static conditions occurs more quickly from density of 12·10[sup]2[/sup] cel/mm[sup]2[/sup] to 59·10[sup]2[/sup] cel/mm[sup]2[/sup], because the speed of water recirculation influences the number of adherent bacteria.
Authors and Affiliations
AURELIA MANUELA MOLDOVEANU, IOAN I. ARDELEAN
Keywords
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