碩士 / 國立高雄海洋科技大學 / 水產養殖研究所 / 101 / Due to the depletion of global energy crisis today, the price of the fossil fuel continues to skyrocket and the development of biomass energy gets the attention again. Nannochloropsis oculata is a kind of excellent biofuel crop that is oil-rich, fast-growing and does not occupy much land area. LED is saving, long lasting, with high luminous efficiency. Due to the rapid and successful development in recent years, it can now be used the light source of the plants as well. This research uses LED as a light source to cultivate Nannochloropsis oculata at night, and to explore the optimum growth conditions, harvesting methods, biodiesel conversion yield and to analyze its cost. The experiment was conducted with three kinds of lights (natural sunlight, full LED lighting, LED lighting at night), three kinds of salinity (10,20,30‰)and three kinds of nutrient concentrations (ammonium sulfate, urea, superphosphate ratio of 60,30,30 mg/L; 180,90,90 mg/L; 300,150,150 mg/L). In the test results, the best cultivation conditions is with LED lighting at night; 20‰; ammonium sulfate, urea, superphosphate ratio of 60,30,30 mg/L. Harvesting method was carried out by multiple poly aluminum coagulation, dosage is 1 g/L for the best. Conversion yield of biodiesel is 58.90 L per year; therefore it is assessed that this mode is not workable. If it is changed to produce Nannochloropsis oculata powder to analyze the cost, the annual output value would be 1,440,000 NTD, the total investment cost would be about 583,578 NTD, 856,422 NTD of net profit as, PE ratio would be 0.68, and return would be 146.75%.
| Identifer | oai:union.ndltd.org:TW/101NKIMT086002 |
| Date | January 2013 |
| Creators | Hsu, Tzu-Yen, 許自研 |
| Contributors | Huang, Kuei-Ming, 黃貴民 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 107 |
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