Crossword clues for biogas
Wiktionary
n. A mixture of methane and carbon dioxide, produced by anaerobic digestion of organic waste matter, used as a fuel
Wikipedia
Biogas typically refers to a mixture of different gases produced by the breakdown of organic matter in the absence of oxygen. Biogas can be produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste or food waste. Biogas is a renewable energy source and in many cases exerts a very small carbon footprint.
Biogas can be produced by anaerobic digestion with anaerobic organisms, which digest material inside a closed system, or fermentation of biodegradable materials.
Biogas is primarily methane and carbon dioxide and may have small amounts of hydrogen sulfide , moisture and siloxanes. The gases methane, hydrogen, and carbon monoxide can be combusted or oxidized with oxygen. This energy release allows biogas to be used as a fuel; it can be used for any heating purpose, such as cooking. It can also be used in a gas engine to convert the energy in the gas into electricity and heat.
Biogas can be compressed, the same way natural gas is compressed to CNG, and used to power motor vehicles. In the UK, for example, biogas is estimated to have the potential to replace around 17% of vehicle fuel. It qualifies for renewable energy subsidies in some parts of the world. Biogas can be cleaned and upgraded to natural gas standards, when it becomes bio-methane. Biogas is considered to be a renewable resource because its production-and-use cycle is continuous, and it generates no net carbon dioxide. Organic material grows, is converted and used and then regrows in a continually repeating cycle. From a carbon perspective, as much carbon dioxide is absorbed from the atmosphere in the growth of the primary bio-resource as is released when the material is ultimately converted to energy.
Usage examples of "biogas".
As the refuse rotted underground, it gave off biogas, chiefly methane.
The biogas rising from the pit was trapped and piped into the houses, to be used for cooking and lighting.
Slaves were despatched to see that the biogas tank was not malfunctioning.
The Odim clan was gathering in the courtyard, where slaves were still meddling inefficiently with long rods, climbing in and out of the biogas inspection pit, despite the sleet in the air.
He glared down at the scene in the courtyard, where, in front of the soldiers, slaves still worked, redding out the biogas drains, glancing mistrustingly at the invaders.
The flame drew a parabola down the darkened air and disappeared into the open trap of the biogas chamber.
The whole mansion was heated by biogas, the slave explained, and the water too.
Between the dim wall lamps, fed from the biogas chambers, skulls of phagors projected from the walls.
They excused themselves and went together to a chill rear chamber, where biogas flames hissed a continual cautionary note.
He was pushed through a courtyard where the biogas inspection pit was, and into a harness room.
The wastes fell down a pipe to biogas chambers below the Wheel, which, supplemented by vegetable and animal wastes from the monastery overhead, supplied the Wheel with its methane lighting.
Carved in this rock were two sets of alcoves: a high series containing the biogas burners, which provided the cells with what light and warmth they enjoyed, and, set twice as frequent, a lower series containing lengths of chain, firmly stapled into place.
GV Biogas and Methane Corporation, a new start-up business, drew me from the pool of available workers.
Yancy flung open the grill and let the biogas run too long before he made a spark, a soft blue explosion causing Stefan to back away.
Odim clan was gathering in the courtyard, where slaves were still meddling inefficiently with long rods, climbing in and out of the biogas inspection pit, despite the sleet in the air.