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WARF: P07104US

Nanoporous Insulating Oxide Deionization Device for Softening and Treating Water


INVENTORS -

Marc Anderson, Kevin Leonard

The Wisconsin Alumni Research Foundation (WARF) is seeking commercial partners interested in developing an improved deionization device capable of softening and treating water.
OVERVIEWCapacitive deionization devices use high surface area carbon electrodes to remove ions from water. However, these systems perform poorly at removing Ca2+ and other multivalent cations, which are atoms or molecules that have lost a number of electrons and thus have a positive charge, from hard water. Alternatively, salt-based water deionizers (water softeners) result in a brine byproduct that is unusable in arid zones wherein water reclamation is practiced.
THE INVENTIONUW-Madison researchers have developed an improved deionization device capable of desalinating salt water, deionizing (softening) water and treating bacteria-contaminated water. This apparatus uses electrodes containing nanoporous insulating metal oxides rather than conventional carbon electrodes. The nanoporous insulating metal oxides provide superior capacitance, energy and power (see WARF reference number P06293US). The device contains two composite electrodes consisting of a conductive backing layer and a composite insulating oxide layer with an intermediate porous layer. These electrodes have the ability to remove hardening ions, salts and bacteria from residential and industrial water supplies more thoroughly than traditional methods.
APPLICATIONS
  • Desalinating salt water
  • Deionizing water
  • Treating contaminated water
KEY BENEFITS
  • Removes alkaline and alkaline earth cations (Ca2+, Na+, etc.), organic cations and organic anions from water
  • Porous member separator prevents shorting of the electrodes.
  • Manufacturing process is relatively inexpensive.
  • Provides an environmentally friendly alternative to traditional water softeners
Contact Information
For current licensing status, please contact Mark Staudt at mstaudt@warf.org or 608-960-9845.
The WARF Advantage

Since its founding in 1925 as the patenting and licensing organization for the University of Wisconsin-Madison, WARF has been working with business and industry to transform university research into products that benefit society. WARF intellectual property managers and licensing staff members are leaders in the field of university-based technology transfer. They are familiar with the intricacies of patenting, have worked with researchers in relevant disciplines, understand industries and markets, and have negotiated innovative licensing strategies to meet the individual needs of business clients.