Electric Water

  • Author: David Bradley
  • Published: 08 July 2010
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA
  • Source / Publisher: Environ. Sci. Technol./ACS
thumbnail image: Electric Water

Mixing brine and fresh water could represent a new approach to power generation based on the thermodynamic principle of entropy.

Entropy increases when two solutions of different salt concentrations are mixed – a thermodynamic change that could generate electrical energy. Dutch technologists suggest that a sandwich of porous "supercapacitor" electrodes, ion-exchange membranes, and a spacer would represent a commercially viable approach for power production. The system could readily be scaled for generation purposes. 1000 L of river water mixing with the sea gives 2.5 MJ. Tapping all freshwater streams across the globe would amount to 2 terawatts of power, enough to satisfy current worldwide electricity demands.

Article Views: 2394

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

Bookmark and Share

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more


ChemistryViews.org on Facebook

ChemistryViews.org on Twitter ChemistryViews.org on YouTube ChemistryViews.org on LinkedIn Sign up for our free newsletter

Magazine of Chemistry Europe (16 European Chemical Societies)published by Wiley-VCH