The petroleum, natural gas, and the chemical & petrochemical process industries, variously require the separation of mixtures — whether of raw feedstream materials, reactants, intermediates, or products — as comprising gases, liquids, or solutions. Membrane separations add another weapon to the arsenal of separation methods, including the upgrading of subquality natural gas reserves. This book furnishes the necessary derivations and calculations for numerically predicting the separations that can be obtained, based on the known respective membrane permeabilities of the pure components. A verstile text, Membrane Separations Technology is suitable both as a reference and a textbook for the practicing process engineer, the researcher, and chemical & petrochemical engineering faculty and students. Has cutting-edge scientific methods for liquifying and transporting natural gas. Written for the engineer in the field, for easy access to important information. Also contains problems and solutions for the student and professor in chemical engineering departments.