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Forward Osmosis

Membrane Processes

  1. Jeffrey McCutcheon,
  2. Liwei Huang

Published Online: 27 SEP 2013

DOI: 10.1002/9781118522318.emst081

Encyclopedia of Membrane Science and Technology

Encyclopedia of Membrane Science and Technology

How to Cite

McCutcheon, J. and Huang, L. 2013. Forward Osmosis. Encyclopedia of Membrane Science and Technology. 1–19.

Author Information

  1. University of Connecticut, Storrs, CT

Publication History

  1. Published Online: 27 SEP 2013

Abstract

Engineered osmosis (EO) is an emerging membrane separations platform capable of purifying water, dewatering solutions, or generating power. An osmotic agent, or draw solution, is used to drive water by osmosis across a membrane. This flow is then harnessed for purification or power generation. This chapter offers an overview of the EO platform technology through discussion of its promised benefits, its challenges, and its role in the future of membrane separations.

Keywords:

  • forward osmosis;
  • pressure-retarded osmosis;
  • direct osmotic concentration;
  • osmotic dilution;
  • concentration polarization