RNG or renewable natural gas (biomethane) is a renewable gas obtained by putting raw biogas through a purification process called upgrading. Raw biogas can be obtained from anaerobic digestion of various raw materials: agricultural biomass (by-products, agricultural waste and animal waste), agro-industrial waste (waste from the processing of the food chain) or the organic fraction of municipal solid waste (OFMSW).
\nOnce the biogas-to-RNG upgrading has been carried out, it must be refined, in order to eliminate the components that are not suitable for feeding the gas into the network (CO₂).
","question":"What is RNG?"},{"id":"DatoCmsFaq-46149982-en-US","answer":"When RNG derives from waste or scraps, it is a totally renewable fuel, which on one hand can guarantee an increase in the self-supply capacity of each individual State, thus reducing dependence on supplies from third countries, and on the other can ensure more competitive prices.
\nAccording to a recent report by the European Biogas Association, RNG currently has 30% lower costs than natural gas, which has been the subject of a surge in prices in recent months, due to the energy crisis linked to the situation in Ukraine.
\nIf supported by legislation, by 2030 renewable natural gas production plants could contribute to the supply of 10% of all gas consumed in the European Union.
","question":"Why will RNG play a fundamental role in the energy transition?"},{"id":"DatoCmsFaq-46149983-en-US","answer":"There are various biogas-to-RNG upgrading technologies available on the market, based on different chemical and physical principles relating to gas separation. The membrane-based system is the most widely used worldwide and consists of particular polymeric materials that have a selective permeability in separating CH4 and CO2.
","question":"What is the best performing upgrading technology to date?"},{"id":"DatoCmsFaq-46149984-en-US","answer":"The upgrading process is divided into three stages: filtration of biogas from an anaerobic digester for removing water and pollutants and compression; purification of pollutants (H2S, VOCs) by passing through an activated carbon bed; upgrading, i.e. separation of methane from carbon dioxide. Find out more about the process.
","question":"How does a membrane upgrading plant work?"},{"id":"DatoCmsFaq-46149985-en-US","answer":"The three stages of the process make it possible to best purify the biogas whilst respecting the network specifications, without the use of chemicals and with the lowest possible energy consumption. Other advantages are high scalability and flexibility such as for example, operation even with partial loads (ideal for any future plant expansion).
","question":"What are the advantages of membrane technology?"},{"id":"DatoCmsFaq-46149986-en-US","answer":"Absolutely, yes. In the event of difficulties or inability to connect to the gas network, it is possible to liquefy the RNG produced, so that it is transported with cryogenic tankers, thus favouring plants that do not have access to the gas pipeline.
\nLiquid renewable natural gas has significant competitive advantages, including the fact that it is three times thicker than compressed natural gas and that, compared to the latter, it guarantees a greater cruising range for vehicles that use it as fuel. Find out more about the process
","question":"I don't have the ability to connect to the network. Can I still invest in a RNG plant?"},{"id":"DatoCmsFaq-46149987-en-US","answer":"Both when converting an existing biogas plant or when constructing a RNG plant from scratch, the choice of the partner is essential to have a guarantee on the long-term investment.
\nAB, whose experience covers more than 860 installed biogas plants, is already active in the RNG sector at an international level with numerous references and can guarantee assistance during all phases of the project (from feasibility, during the authorisation process, up to the design and construction of the plant - which take place in our hub in Italy - and to implementing the system). A fundamental aspect is the maintenance service, which guarantees reduced intervention times, 24/7 assistance and availability of spare parts, to maintain maximum performance throughout the life of the plant itself.
","question":"Why is it important to rely on a partner who can follow the all-round 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