Compositions for controlling phytoplankton contamination
AssigneeBluegreen Water Technologies Ltd.
InventorsMoshe Harel, Oleg Yu. Berezin
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Abstract
A composition for mitigating, inhibiting, ameliorating and/or eliminating phytoplankton growth in a waterbody, the composition comprising an active ingredient at concentration of 80.0-99.5% (w/w) of the composition and a coating material at concentration of 0.5-20% (w/w) of the composition; wherein the critical surface tension of the composition is between 15-60 dyn/cm and wherein the relative density of the composition, prior to being submerged in water, is above 1 g/cm3.
Claims11
A composition for mitigating, inhibiting, and/or eliminating phytoplankton growth in a waterbody, the composition consists of a plurality of coated granules;
- each of the coated granules comprises:
- an algaecide at a concentration of 80.0-99.5% (w/w) of the composition, wherein the algaecide is selected from a copper based algaecide, an aluminum based algaecide, or any combination thereof wherein the algicide has a relative density above 1.0 g/cm3;
- and
- a hydrophobic water insoluble coating material coating the algaecide and being present at a concentration of 0.5-20% (w/w) of the composition, wherein the coating material is selected from a saturated or unsaturated fatty acid, a saturated or unsaturated fatty acid ester, a triglyceride, and any combination thereof;
- wherein the critical surface tension of the composition is between 15-60 dyn/cm, the melting temperature of the coating material is 50-90° C., and an acid value of the coating material is 3-8 mg KOH per gram;
- and wherein the relative density of the composition, prior to being submerged in water is above 1.0 g/cm3, and wherein upon submerging said composition in water the composition is configured to sink immediately after being submerged, and to undergo surfacing 0.25-60 minutes after being submerged in water.
Dependencies are inferred from the claim text.