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Biogas
Biogas is a gaseous renewable energy source[1] produced from raw materials such as agricultural waste, manure, municipal waste, plant material, sewage, green waste, wastewater, and food waste. Biogas is produced by anaerobic digestion with anaerobic organisms or methanogens inside an anaerobic digester, biodigester or a bioreactor.[2] The gas composition is primarily methane (CH
4) and carbon dioxide (CO
2) and may have small amounts of hydrogen sulfide (H
2S), moisture and siloxanes. The methane can be combusted or oxidized with oxygen. This energy release allows biogas to be used as a fuel; it can be used in fuel cells and for heating purpose, such as in cooking. It can also be used in a gas engine to convert the energy in the gas into electricity and heat.[3]
After removal of carbon dioxide and hydrogen sulfide it can be compressed in the same way as natural gas and used to power motor vehicles. In the United Kingdom, for example, biogas is estimated to have the potential to replace around 17% of vehicle fuel.[4] 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. 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.
Spilsby is a market town, civil parish and electoral ward in the East Lindsey district of Lincolnshire, England. The town is adjacent to the main A16, 33 miles (53 km) east of the county town of Lincoln, 17 miles (27 km) north-east of Boston and 13 miles (21 km) north-west of Skegness. It lies at the southern edge of the Lincolnshire Wolds and north of the Fenlands, and is surrounded by scenic walking, nature reserves and other places to visit.
The town has been a rural market town for more than 700 years. It has changed little in size since the beginning of the 19th century. The town centre includes a range of small supermarkets, banks, traditional newsagents, baker, butchers, jewellers and clothing stores, together with public houses, cafes and fast-food takeaways.
At the centre of town is an open square or traditional market place, from which the four main town streets radiate. Markets take place on a Monday. As Spilsby is located within a predominantly agricultural area, much of the market produce consists of locally grown vegetables and meat.
The population of the town was 2,336 in the 2001 census, increasing to 3,045 at the 2011 Census.[1]
