Biogas is a gaseous renewable energy source 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. The gas composition is primarily methane and carbon dioxide and may have small amounts of hydrogen sulfide, 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.
Bristol Airport, at Lulsgate Bottom, on the northern slopes of the Mendip Hills, in North Somerset, is an international airport serving the city of Bristol, England, and the surrounding area. It is 7 nautical miles southwest of Bristol city centre. Built on the site of a former RAF airfield, it opened in 1957 as Bristol (Lulsgate) Airport, replacing Bristol (Whitchurch) Airport as Bristol's municipal airport. From 1997 to 2010, it was known as Bristol International Airport. In 1997, a majority shareholding in the airport was sold to FirstGroup, and then in 2001 the airport was sold to a joint venture of Macquarie Bank and others. In September 2014, Ontario Teachers' Pension Plan bought out Macquarie to become the sole owner.
A Natural Gas Vehicle (NGV) utilizes compressed natural gas (CNG) or liquefied natural gas (LNG) as an alternative fuel source. Distinguished from autogas vehicles fueled by liquefied petroleum gas (LPG), NGV's rely on methane combustion, resulting in cleaner emissions due to the removal of contaminants from the natural gas source.
Reading Transport Limited, trading as Reading Buses, is an English municipal bus operator owned by Reading Borough Council, serving the towns of Reading, Bracknell, Newbury, Slough, Windsor, Maidenhead, Wokingham and the surrounding areas in the counties of Berkshire, Oxfordshire, Surrey and Hampshire, as well as parts of Greater London.
Environmental technology (envirotech) is the use of engineering and technological approaches to understand and address issues that affect the environment with the aim of fostering environmental improvement. It involves the application of science and technology in the process of addressing environmental challenges through environmental conservation and the mitigation of human impact to the environment.
Anaerobic digestion is a sequence of processes by which microorganisms break down biodegradable material in the absence of oxygen. The process is used for industrial or domestic purposes to manage waste or to produce fuels. Much of the fermentation used industrially to produce food and drink products, as well as home fermentation, uses anaerobic digestion.
A garbage disposal unit (also known as a waste disposal unit, food waste disposer (FWD), in-sink macerator, garbage disposer, or garburator) is a device, usually electrically powered, installed under a kitchen sink between the sink's drain and the trap. The device shreds food waste into pieces small enough—generally less than 2 mm (0.079 in) in diameter—to pass through plumbing.
Renewable natural gas (RNG), also known as biomethane, is a biogas which has been upgraded to a quality similar to fossil natural gas and has a methane concentration of 90% or greater. By removing CO2 and other impurities from biogas, and increasing the concentration of methane to a level similar to fossil natural gas, it becomes possible to distribute RNG via existing gas pipeline infrastructure. RNG can be used in existing appliances, including vehicles with natural gas burning engines (natural gas vehicles).
Wessex Water Services Limited, known as Wessex Water, is a water supply and sewerage utility company serving an area of South West England, covering 10,000 square kilometres including Bristol, most of Dorset, Somerset and Wiltshire and parts of Gloucestershire and Hampshire. Wessex Water supplies 1.3 million people with around 285 million litres of water a day.
The majority of public transport users in the Bristol Urban Area are transported by bus, although rail has experienced growth and does play an important part, particularly in peak hours. There were plans for a light rail system, however this has now been dropped although it remains in the long-term local transport plan.
Second-generation biofuels, also known as advanced biofuels, are fuels that can be manufactured from various types of non-food biomass. Biomass in this context means plant materials and animal waste used especially as a source of fuel.
First West of England is a bus operator providing services in Bristol, Bath, Somerset, South Gloucestershire, Worcestershire and Wiltshire. It is a subsidiary of FirstGroup.
The Big Lemon is a bus and coach operator in Brighton, East Sussex, Bristol and Bath. It is registered as a Community Interest Company.
Bristol was ranked in 2008 as the UK's most sustainable city by the environmental charity Forum for the Future, and in 2015 it received the European Green Capital Award. The Bristol Green Capital initiative is managed by a partnership supported by the City Council. Bristol is home to the environmental charities Sustrans, the Soil Association, and the Centre for Sustainable Energy. The city provides a range of recycling services for household waste.
Reading's location in the Thames Valley at the confluence of the River Thames and River Kennet, and on both the Great Western Main Line and the M4 motorway, some 40 miles (64 km) west of London has made the town an important location in the nation's transport system.
Wessex Bus was a bus operator in the West of England that operated from June 2007 until September 2018.
Harvest Power, Inc. was a privately held organics management company headquartered in Waltham, Massachusetts, United States that specializes in converting food waste and yard waste into biofuel, compost, mulch and fertilizer. In 2014 Fast Company named it one of the most innovative companies in the world. In August of 2020 Harvest Power Orlando ceased operations for unknown reasons and all assets were put up for sale; the company was dissolved in April 2021.
MetroBus is a bus rapid transit system in Bristol, England, created as a joint project between Bristol, North Somerset and South Gloucestershire councils. The first route, service m3, began operations on 29 May 2018, followed by m2 on 3 September 2018, m1 on 6 January 2019 and m4 on 22 January 2023.
The Bath Bus Company is a bus operator in the United Kingdom which runs open top tours in Bath, Bristol and Cardiff, and the 'Bristol Air Decker' service between Bath and Bristol Airport. The company has been a subsidiary of the French RATP Group since 2011.
On 3 December 2020, at about 11:20 GMT, a silo containing biosolids exploded in Avonmouth, Bristol, UK, killing four men, including a 16-year old apprentice, and injuring another person. Avon and Somerset Police declared a major incident, and a doctor and specialist paramedic in critical care from the nearby Great Western Air Ambulance headquarters attended the incident by both their rapid response car and emergency helicopter.
