From municipal sewage sludge, valuable substances such as lipids can be extracted for the production of biodiesel. This project develops the technical basis for this extraction.With this on site process, a molasses-like extract is to be obtained from the sewage sludge. This extract should be of sufficiently high quality to be processed into biodiesel. Furthermore, the recovery of phosphorus should at best be carried out in the same process or be easily realizable in the subsequent process step.