Method of producing useful products from seawater and...

Details Method of producing useful products from seawater and... Method of producing useful products from seawater and...

2007-08-28

2007-08-28

Pratt, Helen (Department: 1761)

Food or edible material: processes, compositions, and products

Processes

Treatment of liquid with nongaseous material other than...

C426S425000, C426S464000, C071S011000, C071S023000, C071S025000

Reexamination Certificate

active

11228939

ABSTRACT:
A process is provided for the recovery of useful products, including fertilizers and nutritional supplements, from the organic matter and minerals contained in seawater and other brines. The dissolved organic carbon-based chemicals and suspended particulate carbon-based organic matter are co-precipitated together with the contained magnesium and/or calcium, along with incidental trace minerals, entrained water and water of hydration. An alkali base and/or alkaline earth base are added to the brine until a pH of 10.75 to 11.0 is achieved. The settled or non-dry filtered or centrifuged precipitate is utilized as a slurry and the supernatant brine is discarded.

REFERENCES:
patent: 2404550 (1946-07-01), Thomsen
patent: 2606839 (1952-08-01), Evans
patent: 2934419 (1960-04-01), Cook
patent: 3071457 (1963-01-01), Murray
patent: 3374081 (1968-03-01), Miller
patent: 3775132 (1973-11-01), Richards, Jr.
patent: 4015971 (1977-04-01), Barannik et al.
patent: 4448682 (1984-05-01), Moritz
patent: 4634533 (1987-01-01), Somerville
patent: 5074901 (1991-12-01), Alderman
patent: 6147229 (2000-11-01), Rasmussen et al.

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