Contains papers presented at the joint conference event of the 9th Symposium on Process Systems Engineering (PSE'2006) and the 16th European Symposium on Computer Aided Process Engineering (ESCAPE-16), held in Garmisch - Partenkirchen, Germany, from July 9 July 13, 2006.

It reviews and presents the latest developments and current state of Process Systems Engineering and Computer Aided Process Engineering. It contains papers presented at a joint conference event, bringing together an international community of researchers and engineers interested in computing-based methods in Process Engineering.