Direct Removal of Algae Using Their
Electrochemical Property
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| Yoshie TANIMURA1) and Masao KURODA2) |
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1) Department of Civil Engineering, Gunma National College
of Technology
2) Department of Civil Engineering, Gunma University |
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(Received March 2, 2001)
(Accepted November 13, 2001)
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Abstract
In this study, a new method has been developed for the direct
removal of algae from eutrophic water. A pair of electrodes
consisted of copper (or aluminum) plate cathode and aluminum
plate anode was set in an eutrophic water suspended algae, and
then direct current was applied. The applied current and
concentration of algae were varied in the range of 10-180 mA and
1.00X108-9.96X108cells·ml-1,
respectively.
As algae have negative charge in water, they migrated to the
anode and then adhered on its surface. The adhered algae were
easily detached from the anode and removed from the water at
high efficiency. The accumulation rate of algae on the surface
of anode was increased with increasing applied electric current
and initial concentration of algae. |
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| Key words: electrochemical method, algae removal,
electrophoresis, aluminum electrode, eutrophication |
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