English Abstract On december 15th 1989 a workshop was held on
bioreactors for soil cleaning. The purpose was to present research results
of the last 4 years and to discuss the continuation of this research with
the parties involved. It was concluded that the main bottle necks in the
application of bioreactors are the residual concentrations in the treated
soil and a rather long residence time. beside this, problems concerning
soil analysis and sampling, implementation of gorvernmental standards and
upscaling play a major role. The final reactor design will not only be
determined by (bio-) technological potentialities, but surely also by
economical factors.
