周楚洋　臺灣大學：生物產業機電工程學研究所許超傑Hsu, Chao-ChiehChao-ChiehHsu2007-11-262018-07-102007-11-262018-07-102006http://ntur.lib.ntu.edu.tw//handle/246246/52871本研究係利用蔗渣進行厭氧醱酵反應產生含碳數較低的揮發酸以及甲烷，並將反應所得含揮發酸之醱酵液作為鹼性燃料電池的基質，測試其發電的效能。 試驗的材料有二，一為由一般攤販取得之蔗渣，另一為台灣糖業公司提供之蔗渣，實驗中的菌種取自台灣大學動科系三段式牛糞尿處理系統中厭氧槽的沉澱污泥。醱酵實驗進行兩組操作條件：一為不同混合蔗渣比例的比較(共有4種比例)，另一為不同菌種濃度的比較(共有3種菌種濃度)。 試驗結果顯示蔗渣有相當的比例能被微生物分解，產物大多為揮發酸(乙酸與丁酸等短鏈揮發酸)或甲烷。同時利用試驗所得的揮發酸作為鹼性燃料電池基質的測試中顯示厭氧醱酵的酸液確實可以發電，唯如何提高酸的濃度以及發電的功率則有待進一步的探討。In this study, bagasses were anaerobically digested to produce short chain volatile fatty acids (VFA) and methane. The fermented products – acidic effluent was then fed into an alkaline fuel cell as the substrate to test its performance in generating electric power. There were two sources of tested bagasses, one was obtained from market and another was from Taiwan Sugar Corporation. Seeds used for digestion were collected from the settled sludge of an anaerobic digester of the three-stage cow wastewater treatment system in Department of Animal Science and Technology, National Taiwan University. There were two groups of tests conducted in this study: one group was operated to compare the effect of different mixing ratios of bagasses from different sources (totally 4 levels), and the other group was operated to investigate the effect of different seeding concentrations (totally 3 levels). Experimental results showed that quite a lot of bagasses were degraded, and VFA (most were short chain acetate and butyrate) and methane were the major products. For the subsequent alkaline fuel cell performance tests, using the above acidic effluents as the substrate, results showed the fuel cell did generate electric power. The open circuit potential was achieved up to around 300 mV. However, further study is required to explore the measure to lift the VFA concentration and the efficiency of electrical power for fuel cell.摘要 i ABSTRACT ii 圖目錄 vii 表目錄 ix 第一章 前言及研究目的 1 1-1 前言 1 1-1-1 國際觀點 1 1-1-2 國內觀點 3 1-2 研究目的 4 1-2-1 生質能源的處理方式 5 1-2-2 處理方式間的差異 6 第二章 文獻探討 7 2-1 生質能源的定義及分類 7 2-1-1 蔗渣的基本性質 9 2-2 生物質的轉換方式 11 2-3 厭氧醱酵程序 13 2-4 燃料電池的發展過程及現況 14 2-4-1 鹼性燃料電池(AFC) 16 2-4-2 溶融碳酸鹽燃料電池(MCFC) 17 第三章 材料與方法 18 3-1 厭氧醱酵試驗 18 3-1-1 實驗設備 18 3-1-2 試驗材料 20 3-1-3 實驗設計 21 3-1-4 取樣及分析 22 3-2 以揮發酸為燃料電池基質之性能試驗 25 3-2-1 實驗設備 25 3-2-2 試驗材料 25 3-2-3 實驗步驟 26 第四章 結果與討論 27 4-1 厭氧醱酵試驗結果 27 4-2 不同蔗渣比例之影響 41 4-2-1 對酸鹼值之影響 41 4-2-2 對氣體產量與成份之影響 42 4-2-3 對總揮發酸之影響 43 4-3 不同菌種濃度之影響 45 4-3-1 對酸鹼值之影響 45 4-3-2 氣體產量與成份 46 4-3-3 對總揮發酸之影響 47 4-4 燃料電池測試 48 4-4-1 開路電壓測試 48 4-4-2 固定負載對電壓之影響 50 4-4-3 不同負載之影響 53 第五章 結論與建議 55 5-1 結論 55 5-2 建議 55 第六章 參考文獻 57607562 bytesapplication/pdfen-US蔗渣厭氧醱酵揮發酸燃料電池生質能bagasseanaerobic fermentationvolatile fatty acidsbiomass energythesishttp://ntur.lib.ntu.edu.tw/bitstream/246246/52871/1/ntu-95-R93631007-1.pdf