| Summary: | 碩士 === 明志科技大學 === 環境與安全衛生工程系環境工程碩士班 === 103 === As the use of the fossil fuels raises seriously environmental concerns, much attention has been paid to the research of the environmental symbiosis in recent years. People attempt to develop clean, safe and renewable energy to meet the increasing demand for the energy consuming. Among the various choice of alternative energy, biomass energy, along with the idea of the recycling, is a promising kind. Taiwan is a country founded on farming and the agricultural waste, most of which are organic like cellulose, hemicellulose, and lignin, is a useful resource for biomass reuse. However, the difference on the waste processing may affect the efficiency of the microwave induced pyrolysis. The study applied the microwave induced pyrolysis method on corn leaves, by altering the size of corn leaves and the catalyst (Al2O3) and combining with various pretreatments, observing the gaseous phase product generated by the microwave induced pyrolysis method. The laboratory conditions are controlled and the result suggests that the temperature difference can reach up to 107 degree Celsius among five sizes fractured corn leaves. The varied violently and the most differece reached yield of CO and H2 in the gaseous phase changes 11.4 % and 4.2 %. The most yield of liquid phase was up to 15 % , while the bigger size waste generates the more CO and the smaller one generates more H2. The result also suggests that adding 10 and 50 mesh Al2O3 to waste can reach a higher temperature curve than the system without catalyst. Meanwhile, the highest temperature will increase 17 degree Celsius in the condition of catalyst addition. The yield of CO and H2 increased 9.26 % and 3.5 %, while the yield of CO2 and CH4 changed less than 1%. In the catalyst addition condition both size of the catalyst have the effect of catalyzing the liquid phase product, but the effect of 10 mesh one is more significant. The affecting factor might be the specific surface area of the catalyst. The variety of pretreatment can also differ the results. The orthophosphoric acid soaking pretreatment results in the increasing of the liquid phase product but not effecting the amount of gaseous phase product. The stream explosion pretreatment retarded the gassing peak time of gas production because of catalyzing the transformation of the liquid phase product into the gaseous phase product, moreover, as adding the Al2O3, the reaction also improves the generation of CO and H2 in a smaller amount.
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