碩士 / 明志科技大學 / 生化工程研究所 / 99 / Oil fly ash collecting from a power plant is usually full of unburned carbons with many waste materials, such as trace metals, sulfuric salts, and ammonium salts, adhering to them. In order to reduce the environmental impacts caused by the disposal of the oil fly ash and even further to reutilize those waste materials, the ammonium salts were recovered using an immersion process. The obtained ammonium salts were used as an alternative nitrogen source for the autotrophic cultivation of oleaginous microalgae, Nannochloropsis oculata. The performance of autotrophic culture of microalgae using commercial ammonium sulfate was compared to the one using recovered ammonium salts. The results demonstrate that using recovered ammonium salt as the nitrogen source could obtain similar growth patterns and lipid production amount. The highest biomass yield and lipid content were 1.1 g/L and 32.41%, respectively. This result suggests that the ammonium salts recovered from oil fly ash could be a promising nitrogen source to reduce the production cost of microalgae. In addition, the residual oil fly ash can be further used to obtain valuable metal elements, such as aluminum, nickel, and vanadium.
| Identifer | oai:union.ndltd.org:TW/099MIT00723029 |
| Date | January 2011 |
| Creators | Yeh, Yea Tyam, 葉雅湉 |
| Contributors | Su, Chia Hung, 蘇家弘 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 63 |
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