Quantification and management of the microbial diversity in ecosystems.

Promotor(s): 
External promotor(s): 
W. Verstraete
Description: 

In this study a number of techniques that will evaluate bacterial diversity in ecosystems, both qualitatively and quantitatively, will be developed. The evolution of the bacterial diversity will be studied after introduction of biotic (pathogens, nitrifiers, etc.) and/or abiotic (pH, temperature, toxic substrates, and natural season-linked changes) factors. The activated sludge ecosystem has been chosen as first target for the study because it is well known at the one hand from the process operational point and from mathematical model building point, but hardly known at the other hand from the technical-microbial point. Because oxidation of ammonia and C-1 molecules is of great importance in the activated sludge and because the metabolic processes allow to be approached by molecular techniques, we will focus on these metabolic activities. Ammonia can only be removed from water by nitrification. During denitrification, which is the second step in the biological nitrogen removal, C-1 molecules (mostly methanol but also methane) are used as electron donor. 'In-depth' studies of both processes are based on new denitrifying and nitrifying isolates obtained via new approaches of isolation campaigns.

Run time: 
01/01/2002 to 01/01/2009
Project titel (NL): 
Kwantificering en management van de microbiële diversiteit in ecosystemen.
Project omschrijving (NL): 

Geen Nederlandse beschrijving.