Precipitation of colloidal materials from aqueous systems by ele

Details Precipitation of colloidal materials from aqueous systems by ele Precipitation of colloidal materials from aqueous systems by ele

1986-02-14

1988-06-07

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

204130, 204248, 204249, 204275, 204284, 204290R, 204292, 204302, C02F 146

Patent

active

047494573

ABSTRACT:
A method of precipitating colloidal materials from aqueous systems and a dynamic bimetallic galvanic cell is disclosed, said cell including a metallic electrode which provides a source of flocculating agent and an inert electrode to which the metallic electrode is short circuited. When water containing colloidal particles is passed through the galvanic cell and the electrodes are short circuited, the metallic electrode provides a source of flocculating agent which coprecipitates with the colloidal particles, forming a sediment which can be readily removed. The cell is constructed to maximize the contact between the water and the electrode surfaces and to maintain the metallic electrode short circuited against the inert electrode as the metallic electrode is consumed.

REFERENCES:
patent: 1222637 (1917-04-01), Landreth
patent: 2724688 (1955-11-01), Gruner
patent: 3256504 (1966-06-01), Fidelman
patent: 3392102 (1968-07-01), Koch
patent: 3425925 (1969-02-01), Fleischman
patent: 3474014 (1969-10-01), Aul
patent: 3928155 (1975-12-01), Woodhouse
patent: 4152229 (1979-05-01), Soltys et al.

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