C - Chemistry – Metallurgy – 05 – G
Patent
C - Chemistry, Metallurgy
05
G
31/21, 71/53, 40
C05G 3/04 (2006.01) C09K 17/00 (2006.01) C09K 17/42 (2006.01)
Patent
CA 1221849
ABSTRACT OF THE DISCLOSURE A stable, concentrated solution intended for subsequent aqueous dilution and application to sodium contaminated soils for the productive reclamation thereof is prepared by a process comprising: (a) preparing an initial aqueous solution having a concentration in the range of from about 1 to 4% by weight of a water soluble calcium or magnesium salt and dissolving therein from about 1 to 2% by weight of a water soluble polymer having an average molecular weight of at least about 1,000,000; (b) preparing a substantially saturated aqueous solution of the water soluble calcium or magnesium salt employed in step (a); and (c) mixing from about 5 to 20% by volume of the polymer-containing solution of step (a) with from about 80 to 95% by volume of the substantially saturated solution of step (b) to obtain the stable, concentrated solution. A particularly preferred salt is calcium nitrate and particularly preferred polymers are high molecular weight anionic polyacrylamide polymers. Sodium contaminated soils are productively reclaimed by applying to the surface of such soils an effective volume of a treatment solution obtained by diluting the concentrated solution with sufficient water to provide a treatment solution having a viscosity of no more than about 3 cP (25°C).
446458
Amerigo Technology Limited
Kirby Eades Gale Baker
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