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US 4,398,937 AGranted
Selective algaecides for control of cyanochloronta
AssigneeThe University of Southern Mississippi
InventorsRobert T. van Aller, George F. Pessoney
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AssigneeThe University of Southern Mississippi
InventorsRobert T. van Aller, George F. Pessoney
Estimating the term…
This invention relates to the selective control of algae in ponds, sewage lagoons, cooling towers, lakes, and other bodies of water, including managed bodies of water, and deals particularly with the use of certain long-chain fatty acids and salts thereof for chemical control of Cyanochloronta (blue-green algae). Stimulation of Chlorophycophyta (green algae) is achieved by the use of one embodiment of this invention. Application of the invention to bodies of water used in aquaculture eliminates earthy, musty flavors and other disagreeable flavors associated with blue-green algae in fish and other cultured organisms. Furthermore, a more balanced diversity of planktonic organisms can be maintained which makes oxygen depletion problems more manageable.
A method of selectively controlling the growth of blue-green algae and yellow-green algae while maintaining a desirable balance of planktonic organisms in bodies of water in which populations of harmful blue-green algae are reduced in numbers leaving green algae and their oxygen producing capacity and food value substantially unreduced comprising adding from about 0.01 to about 100 ppm of a fatty acid compound selected from the group consisting of 9, 10-dihydroxystearic acid, Dodecanoic acid, Linoleic acid and Ricinoleic acid to the aqueous medium.
A method of substantially eliminating blue-green algae from sewage lagoons comprising adding from about 0.01 to about 100 ppm of a fatty acid compound selected from the group consisting of 9, 10-Dihydroxystearic acid Dodecanoic acid, Linoleic acid and Ricinoleic acid to said sewage lagoon.
A method of maintaining a desirable balance of planktonic organisms in bodies of water comprising adding from about 0.01 to about 100 ppm of a fatty acid compound selected from the group consisting of 9, 10-Dihydroxystearic acid, Dodecanoic acid, Linoleic acid and Ricinoleic acid to said body of water.
Dependencies are inferred from the claim text.