碩士 / 國立暨南國際大學 / 土木工程學系 / 104 / The waste water with nitrogen and phosphorus was discharged into natural water and made water body become an eutrophication water. There are a lot of algae in eutrophication water, if the algae can be collected and made into bio-ethanol can not only solve eutrophication problem and purify water but also achieve the spirit of green technology by reusing the wastes.This study collected microalgae from eutrophicated lake water, after suitable pre-treatment (drying, crushing, grinding and sieving), acid hydrolysis and fermentation, algae collected from eutrophicated lake water can be made into bioethanol. The effect of fermentation conditions, compose of hydrolysate and by-products was discussed. Optimum ferment conditions by Pichia stipitis (BCRC 21775) are 25 ℃, initial pH 6, pH 8 for iron removal and initial cell density 2 g yeast / L. Under optimum conditions, the largest ethanol production is 721 mg / L and conversion rate can achieve 90% of theoretical yield, the final alcohol yield is 0.023 g ethanol / g biomass. Microalge-bioethanol is feasible technology and it can achieve the green spirit by purifying water and reusing the wastes.
| Identifer | oai:union.ndltd.org:TW/103NCNU0015012 |
| Date | January 2015 |
| Creators | Wei-Chih, Lin, 林威志 |
| Contributors | Yung-Pin Tsai, 蔡勇斌 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 81 |
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