A low-energy forward osmosis process to produce drinking water

Forward osmosis (FO) represents a tremendous and untapped opportunity with the potential to solve the global water crisis. The biggest challenge facing the application of FO technology is the economical separation of drinking water from its draw solution. Leveraging advances in nanotechnology, we he...

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Bibliographic Details
Main Authors: Bai, Hongwei, Liu, Zhaoyang., Lee, Jonathan., Sun, Darren Delai
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2012
Subjects:
Online Access:https://hdl.handle.net/10356/93848
http://hdl.handle.net/10220/7532
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Institution: Nanyang Technological University
Language: English
Description
Summary:Forward osmosis (FO) represents a tremendous and untapped opportunity with the potential to solve the global water crisis. The biggest challenge facing the application of FO technology is the economical separation of drinking water from its draw solution. Leveraging advances in nanotechnology, we herein describe a novel draw solute separation system which mimics a natural "destabilization" phenomenon with the help of superparamagnetic nanoparticles, thus separating drinking water from draw solution without any intensive energy, such as, hydraulic pressure or heat. Also this process is not afflicted by the commonly observed problem of salts reverse diffusion. All these characteristics of this novel draw solution separation system make FO to be an eco-sustainable process for the production of drinking water from wastewater without any waste.