Biogas is a renewable gaseous fuel generated from organic materials including agricultural residues, manure, municipal waste, plant matter, sewage, wastewater, green waste, and food waste. Biogas is p
An Indonesian community installs a cylindrical plastic biogas reactor in order to turn their organic waste into energy, 2007
"Biogaståget Amanda" ("Amanda the Biogas Train") train near Linköping station, Sweden
Biogas fueling station in Mikkeli, Finland
Inauguration of a Südzucker biogas plant in Drochia with interview of Octavian Armașu, 2012.
Hydrogen sulfide or hydrogen sulphide is a chemical compound with the formula H2S. It is a colorless, toxic, and flammable hydrogen chalcogenide gas. Trace amounts in the ambient atmosphere have a cha
Biogas
…an anaerobic digester or other type of bioreactor. The gas composition is primarily methane (CH 4) and carbon dioxide (CO 2) with small amounts of hydrogen sulfide (H 2S) produced as a byproduct. Biogas is typically saturated with water vapour as a result of anaerobic micro-organisms living in water. Trace quantities…
Deposit of sulfur on a rock, caused by volcanic gas
A drained pond, showing the layer of sludge on the bottom; its black colour is due to the presence of metal sulfides, the result of reactions with hydrogen sulfide produced by bacteria.
A hydrogen sulfide bloom (green) stretching for about 150 km (93 mi) along the coast of Namibia. As oxygen-poor water reaches the coast, bacteria in the organic-matter rich sediment produce hydrogen sulfide, which is toxic to fish.