碩士 / 國立中正大學 / 分子生物研究所 / 104 / In Taiwan, there is high density of semiconductor factories which produce high contents of heavy metals including emerging contaminants- molybdenum (Mo), indium (In) and gallium (Ga). The living organisms in the wastewater of semiconductor factories should have the resistance to harsh environments and have ability to absorb or adsorb metal ions. We identified Chloroidium saccharophilum, a strain of microalgae, from water in Ke-ya-Shi containing wastewater of many semiconductor factories of Hsinchu in Taiwan. In addition, Desmodesmus sp. was collected from Tranquility Lake of National Chung Cheng University in Chiayi , Taiwan. The growth of algae usually requires certain metal ions as micronutrients, particularly Mo. Thus, the microalgae were used to remove Mo and In from water samples, and, at the same time, the microalgae remained fat-production to be biomass. As the results, microalgae is resistant to metal-stress, is capable to remove the metal from water samples, and produces fat for 25% of cell weight. Finally, we tested the adsorption mechanism of metal-removal with dried microalgae. Dried microalgae can adsorb molybdenum in a short time to reduce molybdenum in the water. Conclusively, Chloroidium saccharophilum and Desmodesmus sp. have double effects in water purification and high lipid content as a source of biofuels.
| Identifer | oai:union.ndltd.org:TW/104CCU00061066 |
| Date | January 2016 |
| Creators | Du Cheng-Wei, 杜承偉 |
| Contributors | Lee Cheng-I, 李政怡 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 101 |
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