Process for separating salts in seawater

Details Process for separating salts in seawater Process for separating salts in seawater

1989-05-30

1990-09-11

Hruskoci, Peter

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group iib metal

210724, 210726, 210737, 210912, 159 471, 159DIG23, 203 10, 203 35, 203 36, 203 37, 203 48, 23296, 23300, 423164, 423167, 423178, B01D 902

Patent

active

049561570

ABSTRACT:
A process for obtaining available elements from seawater is described, which process includes two separation steps. The first separation step involved adjusting the pH of seawater to a low pH by adding a strong acid having sulphate ion, adding a strongly alkaline agent thereto in amount sufficient to provide a high pH and separating the precipitate formed thereby from the filtrate. The second separation step involves concentrating the filtrate, cooling the concentrated filtrate and separating a precipitate thereby formed. Each precipitate and each filtrate obtained in these steps has characteristic components and can be utilized for many purposes, for example, for food additives, as a solvent for paint, as combustion aids, or as alkaline agents for neutralization etc.

REFERENCES:
patent: 1697336 (1929-01-01), Yngve
patent: 1894514 (1933-01-01), Hechenbleikner
patent: 2587001 (1952-02-01), Seailles
patent: 3262865 (1966-07-01), Waters, Jr.
patent: 4755303 (1988-07-01), Sweat

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