Chemistry: electrical and wave energy – Processes and products – Electrophoresis or electro-osmosis processes and electrolyte...
Patent
1997-11-12
2000-01-25
Gorgos, Kathryn
Chemistry: electrical and wave energy
Processes and products
Electrophoresis or electro-osmosis processes and electrolyte...
204529, 204530, 204542, 205697, B01D 6144
Patent
active
060174331
ABSTRACT:
The invention is a process for desalting aqueous solutions, which are initially acidified to a pH of about 3 or less. Then, the acidified solution is fed into a desalting compartment of an electrodeionization cell which contains a suitable ion exchange material and is isolated from an adjacent concentrating compartments by an anion and a cation exchange membrane. The concentrate compartment contains a netting or another suitable material that promotes turbulence in a flowing feed stream. Water is supplied to the concentrate compartment. A DC current passes through the electrodeionization cell to produce a substantial desalination of the feed solution. A less acidic desalted solution and a concentrate waste solution are withdrawn from the electrodeionization cell.
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Archer Daniels Midland Company
Gorgos Kathryn
Parsons Thomas H.
Whitesel J. Warren
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