소개글
Asepn을 이용한 공정설계 레포트목차
없음본문내용
AbstractPassing through industrialization of modern society, oil was indispensable resource. The oil has low prices, a variety of use and high thermal efficiency, whereas environmental pollution and global warming problems are promoted by the harmful gases such as CO, CO2, NOx, SO2 from combustion of petroleum resources. In addition, the non-recyclable petroleum resources are depleted by the day, looking for alternative sources of energy has emerged as a hugh topic.
Bio-ethanol, bio-diesel is one alternative of above problems. Because bio-energy is extracted from organisms, it do not depleted as arable land is existed. And it does not trigger warming gases because it absorbs CO2 from atmosphere and reemit CO2 compared petroleum resources which increase the amount of CO2. However, because of low efficiency, the bio-energy by using the grain has increased the price of crop. As a result, bio-energy for humanity and the environment has triggered the shortage of food resources.
As a alternative of it is bio-energy from algae and woody resources. Bio-energy from woody resources has high cost of process because of lignin and it destroys the wood. In comparison, the bio-energy from seaweed utilize wider area of ocean and has high efficiency so it can be harvested several times. Micro-algae bio-energy has 16 times efficiency than oil palm and macro-algae bio-energy has 1.5 times efficiency than sugar cane.
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