碩士 / 國立高雄應用科技大學 / 化學工程與材料工程系碩士在職專班 / 103 / In recent years, the development of industry and technology, leads to the large-scale utilization of fossil fuels. Emissions generated by fossil fuels would continuely increase, resulting in a global warming phenomenon. In addition to indirectly affect the ecology, this effect can also change the human living space.While carbon dioxide is the largest greenhouse gas in the exhaust gas, it is important to capture and sequester carbon dioxide from flue gass. Preliminary analysis suggests that the most cost-effective capture costs must be below the US $ 30 per tonne. Therefore, the development of high adsorption capacity, high stability and low-cost adsorbent material is considered to be urgent.
Calcium oxide (CaO) is on of the most widely used materials to capture carbon dioxide. CaO is also used to clean air in the submarine unit system. The objective of this study is to reuse the waste material from submarines clean air device by impragnating different amounts of Na+, Cs+. The resultant materials are tested as the high-temperature carbon dioxide adsorbent. Firstly recycling waste material is treated at high temperature calcination. Then, impregnation of NaCl, CsOH, CsCl onto tne heat-treated sorbents is carried out. Different amounts of Na+, Cs+ (2%, 10%, 20%, 40%) can be supported on a waste material, and followed by high temperature. By using a variety of physical and chemical characterizations, such as powder X-ray diffraction (XRD), nitrogen adsorption / desorption isotherms (BET), fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and thermogravimetric analyzer (TGA), the physicochemical properties and CO2 adsorption-desorption performance of sorbents can be understood. The repeated adsorption-desorption cycle tests, were also investigated in this study.
The results show that loading species and concentration can affect adsorption. In this experiment, 2% NaCl-modified adsorbents have better adsorption capacity, but with CsOH-modified composite adsorbent has the best cycle stability.
| Identifer | oai:union.ndltd.org:TW/103KUAS1063017 |
| Date | January 2015 |
| Creators | Chen,Ting-Chi, 陳丁綺 |
| Contributors | Liu,Shou-Heng, 劉守恒 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 76 |
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