Discusses recent developments and future directions in the field of membrane separation systems. Describes research needed to bring energy-saving membrane separation processes to technical and commercial readiness for commercial acceptance within the next 5 to 20 years. Pays particular attention to identifying currently emerging innovative processes.Volume I Executive Summary Assessment Methodology Introduction Government Support of Membrane Research Analysis of Research Needs Appendix A: Peer Reviewers' Comments Volume II Introduction to Volume II Membrane and Module Preparation Gas Separation Facilitated Transport Reverse Osmosis Microfiltration Ultrafiltration Electrodialysis Glossary of Symbols and AbbreviationsDiscusses recent developments and future directions in the field of membrane separation systems.