Nanotech 2014 Vol. 1
Nanotech 2014 Vol. 1
Nanotechnology 2014: Graphene, CNTs, Particles, Films & Composites

Nanostructured Coatings, Surfaces & Membranes Chapter 3

Effect of Support Structure on Permeance of Thin Film Composite Membranes

Authors: K. Ponnuru, H. Lin, E.P. Furlani

Affilation: SUNY Buffalo, United States

Pages: 249 - 252

Keywords: composite membrane, reverse osmosis, microporous support, computational model

Abstract:
The production of potable water has become a worldwide concern to meet the demand of a growing population. The reverse osmosis (RO) membrane is the leading technology for desalination installations to produce drinkable water, due to the high energy efficiency and resulting low costs. The popularization of RO membranes has been achieved by continual improvement in membrane separation performance and cost reduction. The thin dense skin layer of the thin film composite RO membrane performs molecular separation and the porous bulk of the membrane (150-200 µm) provides mechanical strength, but offers no resistance to mass transport for desalination. As the selective layer is produced thinner to enhance the water permeance, the geometric structure of the microporous support becomes more important, because the porosity and pore size may restrict the concentration profile of the water in the selective layer. This presentation will discuss the effect of the support geometry on the membrane permeance using an integral approach combining computational fluid dynamics simulations and experiments.


ISBN: 978-1-4822-5826-4
Pages: 552
Hardcopy: $209.95