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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.
Falmouth (/ˈfælməθ/ FAL-məth; Standard Written Form: Aberfala[2]) is a town, civil parish and port on the River Fal on the south coast of Cornwall, England, United Kingdom.[3] It has a total resident population of 21,797 (2011 census).
In 1540, Henry VIII built Pendennis Castle in Falmouth to defend Carrick Roads. The main town of the district was then at Penryn. Sir John Killigrew created the town of Falmouth shortly after 1613.[7]
In the late 16th century, under threat from the Spanish Armada, the defences at Pendennis were strengthened by the building of angled ramparts. During the Civil War, Pendennis Castle was the second to last fort to surrender to the Parliamentary Army.[8]
After the Civil War, Sir Peter Killigrew received royal patronage when he gave land for the building of the Church of King Charles the Martyr, dedicated to Charles I, "the Martyr".[9]
Falmouth is a charming coastal town in Cornwall, England, that offers a rich maritime heritage and a vibrant cultural scene. You can explore the town's harbour, where you can admire the historic boats, visit the National Maritime Museum, or hop on a ferry to St. Mawes or the Helford River. Falmouth is also a great place to enjoy the local cuisine, especially the fresh oysters and seafood. You can find a variety of cafes, restaurants, and speciality food outlets in the town, as well as some independent shops and galleries. Falmouth is also known for its festivals and events, such as the Falmouth Week, the Oyster Festival, and the Sea Shanty Festival, where you can experience the town's lively spirit and creativity.
