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Hydrogen sulfide is a chemical compound with the formula H 2 S.It is a colorless chalcogen-hydride gas, and is toxic, corrosive, and flammable, with trace amounts in ambient atmosphere having a characteristic foul odor of rotten eggs. [11]
Instead of releasing oxygen gas while fixing carbon dioxide as in photosynthesis, hydrogen sulfide chemosynthesis produces solid globules of sulfur in the process. Mechanism of Action. In deep sea environments, different organisms have been observed to have the ability to oxidize reduced compounds such as hydrogen sulfide. [7] Oxidation is the ...
Venenivibrio stagnispumantis gains energy by oxidizing hydrogen gas.. In biochemistry, chemosynthesis is the biological conversion of one or more carbon-containing molecules (usually carbon dioxide or methane) and nutrients into organic matter using the oxidation of inorganic compounds (e.g., hydrogen gas, hydrogen sulfide) or ferrous ions as a source of energy, rather than sunlight, as in ...
In oil refineries, that stripped gas is mostly H 2 S, much of which often comes from a sulfur-removing process called hydrodesulfurization. This H 2 S-rich stripped gas stream is then usually routed into a Claus process to convert it into elemental sulfur. In fact, the vast majority of the 64,000,000 metric tons of sulfur produced worldwide in ...
Hydrogen sulfide is a very toxic and corrosive gas characterised by a typical odour of "rotten egg". −85.7: −60.20: 7783-06-4: CdS: Cadmium sulfide can be used in photocells. 1750: 1306-23-6: Calcium polysulfide ("lime sulfur") is a traditional fungicide in gardening. CS 2: Carbon disulfide is a precursor to organosulfur compounds. −111.6 ...
Sulfur reduction metabolism is an ancient process, found in the deep branches of the phylogenetic tree. [15] Sulfur reduction uses elemental sulfur (S 0) and generates hydrogen sulfide (H 2 S) as the main end product. This metabolism is largely present in extreme environments where, especially in recent years, many microorganisms have been ...
The process is named after the Gildler Company, which constructed the first American plant to implement it. The method is an isotopic exchange process, where isotopes of hydrogen are swapped between hydrogen sulfide (H 2 S) and water (H 2 O), also known as "light" water, that produces heavy water over several steps. This process is highly ...
The process uses reduction-oxidation chemistry to oxidise the H 2 S into elemental sulfur, in an alkaline solution containing vanadium as an oxygen carrier. [2] The process earned the NWGB a Queen's Award to Industry in 1968. Although it was used in the gas industry for only a relatively short time, the process was licensed by the NWGB and used ...