Chemical resources of the oceans and their extraction from sea water
Chemical resources of the oceans and their extraction from sea water.
The world ocean has a great chemical resource that can be extracted along the way – in the desalination of sea water to produce drinking water.
Chemical resources of the oceans and their extraction from sea water:
In sea water in the form of salts dissolved almost all the chemical elements of the periodic table. Of the 118 known chemical elements 70 are found in ocean and sea waters. In fact, the oceans contain inexhaustible reserves of importance for the chemical elements, albeit in low concentrations.
For example, the content of iridium in the ocean of 5.0×10-9 %, silver is 1.0×10-8 %, Germany is 6.0×10-9 %, of copper and 3.0×10-7 %, cobalt to 8.0×10-9 %, of Nickel is 2.0×10-7 %, gold and 5.0×10-9 %, uranium is 3.3×10-7 %, aluminum of 5.0×10-7 %, rubidium – 0,000012 %.
Given the huge volume of ocean water, the total quantity of dissolved chemical elements and their compounds is calculated enormous quantities. The total mass of the chemical resources of the ocean equal 50х1015 tons.
Currently, not all chemical elements are extracted from the waters of the world ocean, but only those, production of which is cost-effective. Today, the most economically justified extraction from sea water, salt cookbook (the third part of world production), bromine (about 70% of total production), magnesium (more than 61% of world production) and potassium.
Other chemical elements can be extracted from sea water along the way. So, if the desalination of sea water with the aim of obtaining fresh drinking water is the precipitate. Chemical elements can be extracted and used in the future.
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