Water Production and Energy Storage by Salinity Gradient

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Researchers at Purdue University have created a grid-scale salinity gradient for water production and energy storage. Desalination is the most strenuous and costly step in the entire water production process, and there remains a need to create the supply necessary to meet the world's demand for drinking water. Currently, water systems operate at constant power, which is often wasteful and inefficient. Most facilities are not adapted for price fluctuations or seasonal changes as a result. By implementing new configurations for reverse osmosis in water management facilities, Purdue researchers were able to control water supply based on load. This approach allows desalination facilities to set medium to high salinity when there is plenty of water and low to medium salinity when there are low water levels. In addition, this economical, reliable, and environmentally friendly solution is not limited by geographical or elevation constraints, unlike conventional plants.


Potential Applications
-Water Production
-Energy Storage
-Renewable Energy
Sep 30, 2020

Oct 1, 2019
United States
Purdue Office of Technology Commercialization
1801 Newman Road
West Lafayette, IN 47906

Phone: (765) 588-3475
Fax: (765) 463-3486
Email: otcip@prf.org