碩士 / 國立臺灣海洋大學 / 輪機工程系 / 98 / Deep sea water which bears with superior fluid characteristics such as rich mineral nutrients, low temperature, much less bacteria and stable water property, etc. is expected to have great applications in the fields of aquaculture, food, drinks and energy. Deep sea water is considered to culture microalgae in this study in order to enhance their growth rate and reduce nutrient cost. The lipid extracted from the microalgae was further transesterified to produce biodiesel which is used as alternative fuel to petroleum diesel. The biomass quantity, nutrient addition, lipid content, fatty acids and biodiesel properties of the microalgae were analyzed and compared under various culturing conditions. The experimental results show that Chaetoceros muelleri had more significant variation in growing rate in comparison with that of Nannochloropsis oculata when those two microalgae were cultured in three various ocean waters including deep sea water, surface sea water and simulated sea water. The biomass quantity, growth rate and lipid content of the Chaetoceros muelleri cultured in deep sea water were 0.929 g/L, 0.11 d-1 and 28.87 wt. %, respectively while were 0.178 g/L, 0.05 d-1 and 22.84 wt. %, respectively in surface sea water. This implies the deep sea water can provide a faster growing environment for Chaetoceros muelleri than surface sea water. In addition, 50 % less nutrient was required when Chaetoceros muelleri is cultured in deep sea water than in surface sea water.
Key words: Microalgae, Deep sea water, Nutrient、Lipid content、Fatty acids
| Identifer | oai:union.ndltd.org:TW/098NTOU5484004 |
| Date | January 2010 |
| Creators | Suz-Hsien Wu, 吳思賢 |
| Contributors | Cherng-Yuan Lin, 林成原 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 103 |
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