Method and composition for stabilizing earth and sand to prevent soil erosion
AssigneeImpermeable AS
InventorsTerje Östvold, Tore Larsen, Öyvind Gustavsen, Katerina Kofina, Takis Paraskevas, Petros Koutsoukos, Marianna Lioliou
Life of this patent
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Abstract
Method for stabilizing sand and earth by precipitation of struvite, comprising applying an aqueous solution of salts comprising: a) Mg2+ ions of a concentration 10-200 mM, b) NH4+ ions either added in the form of ammonium salt or from decomposition of added urea, of concentration 10-200 mM, c) anions added as part of corresponding cations, d) polyphosphate (Na5P3O10/Na3P3O9) of concentration 10-100 mM, e) a catalyst chosen among acidic and alkaline phosphatase.
Claims12
Method for stabilizing sand and earth by precipitation of at least one mineral, said method comprising applying to the sand an aqueous solution of salts comprising:
- a) Mg2+ ions of concentration 10-200 mM
- b) NH4+ ions added either as an ammonium salt or from decomposition of added urea, of concentration 10-200 mM
- c) anions added as part of corresponding cations
- d) polyphosphate (Na5P3O10/Na3P3O9) of concentration 10-100 mM
- e) a catalyst chosen among acidic or alkaline phosphatase.
Stabilizing composition for sand and earth or mixtures of sand and earth by precipitation of at least one mineral, said composition comprising:
- a) Mg2+ ions of concentration 10-200 mM
- b) NH4+ ions added either as an ammonium salt or from decomposition of added urea, of concentration 10-200 mM
- c) anions added as part of corresponding cations
- d) polyphosphate (Na5P3O10/Na3P3O9) of concentration 10-100 mM
- e) a catalyst chosen among acidic or basic (alkaline) phosphatase.
Dependencies are inferred from the claim text.