English 
Mitsubishi Heavy Industries (MHI) has tested its new Mitsubishi Membrane Dehydration System (MMDS®) at a pilot plant in Nagasaki. The test achieved ethanol purity levels above 99.5 vol%, meeting Japan’s fuel standards. This is a big step for better bioethanol production. It helps make cleaner fuel options and meets the growing demand for Sustainable Aviation Fuel (SAF).
The MMDS® system uses a molecular sieve membrane separation process instead of the traditional pressure swing adsorption (PSA) method. This innovation cuts energy use by over 30%. It also separates ethanol and water in the liquid phase. This leads to smaller plant designs and lower operating costs. MMDS® can cut costs and make bioethanol production greener. It improves the energy-intensive dehydration stage.
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三菱重工 plans to build a demo plant using these pilot results. This will help speed up commercialization. The initiative matches industry trends to grow bio-based fuels. It also helps create carbon-neutral energy solutions that don’t depend on hydrogen.
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