Algae will help to extract gold from hot springs. Free Technical Library News

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Algae will help extract gold from hot springs

12.12.2022

Researchers at Japan's Water and Earth Science and Technology Agency of Japan (JAMSTEC) and major engineering company IHI said they have found a way to isolate gold from hot spring water.

Molten gold is found in magma at great depths below the Earth's surface. This precious metal is believed to seep into superheated hydrothermal water, slowly rise to the surface, and solidify to form veins in the rock.

Researchers believe that hot spring water may contain gold. They noted that cyanobacteria, also called blue-green algae, can be used to isolate the metal. According to them, algae absorb gold, separating it from chlorine and other elements.

The group processed the seaweed into sheets, which they then soaked for seven months in a hot spring in Akita Prefecture in northern Japan.

According to members of the group, up to 30 g of gold can be obtained from one ton of such sheets. The largest gold mines in the world are reported to produce between 3 and 5 grams of gold from one tonne of ore.

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Interest in the Antarctic life of that period, related to the early Eocene, is now especially growing due to the fact that the world then covered the "greenhouse effect" - the level of carbon dioxide in the atmosphere was at least 390 instead of today's 600 parts per million. According to estimates, the global the temperature near the earth's surface was 5 degrees higher than now, and there was no sharp climatic division between the equator and the poles.

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