University of California

Ravi Shankar Prasher

Hao Wang

Robert Kostecki

Jeffrey J Urban

Andrew Z Haddad

Justin Palmer Freedman

Akanksha K Menon

This disclosure provides systems, methods, and apparatus related to water desalination. In one aspect, a method includes generating a diluted draw solution using forward osmosis. Wastewater is on a first side of an osmotic membrane and a draw solution is on a second side of the osmotic membrane. The draw solution comprises a mixture of water and an ionic liquid. Water in the wastewater diffuses across the osmotic membrane to the draw solution to form the diluted draw solution. The diluted draw solution is heated using a photonic heater to a temperature above a lower critical solution temperature (LCST) of the ionic liquid to phase separate the diluted draw solution into the ionic liquid and treated water.

Systems and methods for water desalination using thermo-responsive ionic liquids regenerated by solar energy

A multilayer photonic stack comprising a lower plurality of alternating layers comprising at least A and B and an upper plurality of alternating layers comprising at least C and D, layer A comprises at least one of Al, Au, W, Ag, Ni, Ti, Pt, and Cr, layer B comprises at least one of AlO, AlN, MgO, SiO, TiO, SiN, MgF, TaO, SiC, Si, Ge, and Indium Tin Oxide (ITO), and layers C and D comprise at least one of AlO, AlN, MgO, SiO, TiO, SiN, MgF, TaO, SiC, Si, Ge, and Indium Tin Oxide (ITO).

Photonic near infrared heater

Growing community of inventors

Danville, CA, United States of America

Ravi Shankar Prasher