Electrolysis: processes – compositions used therein – and methods – Electrolytic material treatment – Water – sewage – or other waste water
Reexamination Certificate
2008-01-18
2011-10-18
Hendricks, Keith (Department: 1724)
Electrolysis: processes, compositions used therein, and methods
Electrolytic material treatment
Water, sewage, or other waste water
C205S743000, C205S746000, C205S770000
Reexamination Certificate
active
08038867
ABSTRACT:
A device includes a first electrode and a second electrode spaced from the first electrode to define a volume. An anion exchange membrane and a cation exchange membrane are disposed within the volume. A controller controls a supply of electrical current from an electrical source to the first electrode and to the second electrode. The electrical current supply is controlled to switch from a first mode of operation to a second mode of operation providing electrical current having a reverse polarity during each cycle. The electrical current is supplied at a controlled cycle rate and for a controlled duration. The cycle rate is greater than about 100 hertz and less than about 10 kilohertz.
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H. Lee, S. Moon, S. Tsai. “Effects of pulsed electric fields on membrane fouling in electrodialysis of NaCI solution containing humate.” Separation and Purification Technology. vol. 27, Issue 2. May 2002. pp. 89-95.
Mishcuk et al., “Intensification of Electrodialysis By Applying a Non-Stationary Electric Field”, Colloids and Surfaces, vol. 176, pp. 195-212, 2001.
PCT International Search Report dated May 13, 2009.
Cai Wei
Cao Chun
Du Yu
Liu Yunfeng
Mao Saijun
Friday Steven A.
General Electric Company
Gioeni Mary Louise
Hendricks Keith
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