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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.
Middlesbrough (/ˈmɪdəlzbrə/ ⓘ MID-əlz-brə) is a town in the Middlesbrough unitary authority borough of North Yorkshire, England. The town lies near the mouth of the River Tees and north of the North York Moors National Park. The built-up area had a population of 148,215 at the 2021 UK census. It is the largest town of the wider urban Tees Valley area, which had a population of 678,400 in 2021.
Until the early 1800s, the area was rural farmland in the historic county of Yorkshire. The town was a planned development which started in 1830, based around a new port with coal and later ironworks added. Steel production and ship building began in the late 1800s, remaining associated with the town until the post-industrial decline of the late twentieth century. Trade (notably through ports) and digital enterprise sectors contemporarily contribute to the local economy, Teesside University and Middlesbrough College to local education.
Middlesbrough was made a municipal borough in 1853. When elected county councils were created in 1889, Middlesbrough was considered large enough to provide its own county-level services and so it became a county borough, independent from North Riding County Council. The borough of Middlesbrough was abolished in 1968 when the area was absorbed into the larger County Borough of Teesside. Six years later in 1974 Middlesbrough was re-established as a borough within the new county of Cleveland. Cleveland was abolished in 1996, since when Middlesbrough has been a unitary authority within the ceremonial county of North Yorkshire. However, since its establishment in 2016, the former area of Cleveland, including Middlesbrough, has been also governed by the Tees Valley Combined Authority, which has had a directly elected Mayor since 2017.
