An assessment conducted by a group of six membrane separation experts who examined the worldwide status of research in seven major membrane areas. These encompassed four mature technology areas: reverse osmosis, microfiltration, ultrafiltration, and electrodialysis; two developing areas: gas separation and pervaporation; and one emerging technology: facilitated transport. The information in the book is from a report prepared by Membrane Technology & Research, Inc. for the US Dept. of Energy, April 1990.