Selenium

Selenium is a trace element that is not a carbon-based compound, but a metalloid with chemical properties similar to both metals and non-metals. It is found in the earth's crust and is originated from the natural deposits of selenium-containing rocks. Its origin can also be traced to the secondary sources such as the by-products of copper, nickel, and iron refineries. Selenium has a wide range of primary uses, with i...

Selenium is a trace element that is not a carbon-based compound, but a metalloid with chemical properties similar to both metals and non-metals. It is found in the earth's crust and is originated from the natural deposits of selenium-containing rocks. Its origin can also be traced to the secondary sources such as the by-products of copper, nickel, and iron refineries. Selenium has a wide range of primary uses, with its most significant application seen in the production of electronic and electrical equipment. It is used in the manufacturing of semiconductors, solar cells, and photocells due to its unique properties that enable it to reduce defects in silicon chips. Additionally, selenium is used in the production of glass to give a red color.

Selenium is produced mainly as a by-product of the refining of other metals, such as copper, and from the electrolytic refining of copper and nickel. It can also be produced from the roasting of sulfide ores. The most common method for producing selenium is through the burning of high-selenium content materials in a furnace, followed by the condensation of the resulting vapors. Another method is through the electrolysis of selenious acid, which produces a selenium-rich anode that can be further processed.