Bacteria transport under unsaturated conditions [Elektronische Ressource] / vorgelegt von Grazia Gargiulo

Bacteria transport under unsaturated conditions Von der Fakultät für Mathematik, Informatik und Naturwissenschaften der Rheinisch-Westfälischen Technischen Hochschule Aachen zur Erlangung des akademischen Grades eines Doktors der Naturwissenschaften genehmigte Dissertation vorgelegt von Dottoressa in Chimica Industriale Grazia Gargiulo aus Castellammare di Stabia (Napoli) Italia Berichter: Universitätsprofessor Dr. Andreas Schäffer Universitätsprofessor Dr. Harry Vereecken Tag der mündlichen Prüfung: 19. Oktober 2006 Diese Dissertation ist auf den Internetseiten der Hochschulbibliothek online verfügbar. Abstract The aim of this work was to study the bacteria transport behaviour in different conditions using an unsaturated porous media. A column based system able to keep the unsaturated conditions was designed and developed to perform the experiments. Two bacteria strains Deinococcus radiodurans and Rhodococcus rhodochrous strongly different in hydrophobicity were employed. During the experiments the bacteria concentration in the outflow was continuously on-line measured and after the experiment the column has been dismantled to determine the retention profile. The observed data were fitted using two different models (Tufenkji et al. 2003, 2004, 2005 and Bradford et al. 2003) and the resulting coefficients were used to elucidate the transport mechanisms.