According to a recent report by the BBC website, British scientists have proved through experiments that microwave irradiation can turn food residues into important chemicals and biofuels. The new method enables people to dispose of waste food in factories or homes, which not only provides recyclable energy, but also helps solve the problem of increasing food waste worldwide.

Professor James Clark of York University in the United Kingdom introduced the technology at the British Science Festival held recently, and they plan to build a demonstration device in York by the end of this year. He said that using highly focused microwaves, any organic food waste can be turned into useful compounds for use in materials science and biofuel applications.

Many farms, factories and consumers' homes around the world produce large amounts of organic waste that is not used. For example, in Africa, the process of making cassava produces 228 million tons of discarded starch each year; in Europe, the production of coffee produces 3 billion tons of waste each year. Most of the waste in the UK comes from agricultural residues, including discarded unused leaves, stalks, cereal plants, and crop shells. In Brazil, when manufacturers produce orange juice, 8 million tons of orange peels are discarded each year.

Brazil Orange Peel Development Corporation (OPEC) plans to introduce new technologies developed by York University to extract biofuels and chemicals from orange peels and waste. Clark explained: "Cut orange peels into small pieces and put them in the microwave field to concentrate the microwave field (just like using a domestic microwave oven, but with higher energy), it will activate cellulose and induce them to release. A large number of chemicals, for example, one of the chemicals, lemon essential oil, can be used directly to make perfumes or other chemicals that people desperately need. The chemicals extracted from these orange peels can eventually be used to make biofuels that replace petroleum . "

Clark said that the microwave technology will be able to process any substance containing cellulose, especially suitable for processing paper and cards. Although this technology is still in the testing stage, it can be used to treat a lot of waste and can be applied to various scales. At present, because of the large amount of energy required to manufacture microwaves, there are some restrictions on the size of the equipment, but this microwave machine can eventually be as large or small as it can be used in the home or in large-scale industrial production. Very easy to transport.

Demonstration equipment will be built by the end of this year to test the concept. The equipment is expected to process 10 kg of waste per hour. R & D personnel speculate that if the technology is commercially viable, a device costing $ 1 million will be able to process approximately 6 tons of waste per hour. All food waste generated by farms, factories and households can eventually be recycled into clean renewable energy and chemicals.

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