微生物燃料電池產電效能之研究-以活性污泥水解產物為基質

The study of electricity efficiency of microbial fuel cell feeding with hydrolysis products of activated sludge

張信堃(hsin-kun Chang)

指導教授 ： 莊順興

朝陽科技大學/理工學院/環境工程與管理系在職專班/碩士(2011年)

摘要

本研究以都市污水處理廠廢棄活性污泥為基質，進行微生物燃料電池產電效能探討，並與葡萄糖基質比較，期望透過水解技術將污泥中固體性有機物破碎，提升微生物燃料電池陽極槽內微生物利用效率，增加微生物燃料電池產電之效能。
試驗結果發現添加葡萄糖負荷以4 gCOD/gMLVSS．day時，MFC一批次全反應產生最高電壓值達0.68 V，陽極槽內微生物去除SCOD達80 %，MFC系統產生之庫倫效率為49 %，陽極槽內pH值維持在4而以超音波水解污泥產物為基質負荷為3 gCOD/gMLVSS．Day條件下，MFC一批次全反應產生最高電壓值達0.52 V，陽極槽內微生物去除SCOD達70%，MFC系統產生之庫倫效率為40%，陽極槽內pH值維持在6.5。
以上結果可說明，在電壓方面添加葡萄糖比超音波水解污泥產物高，兩種基質之平均SCOD去除率介於70~80%，去除效率相近，pH值方面添加超音波水解污泥之產物有大量的鹼度及有機物可緩衝pH值升降，較添加葡萄糖基質不易酸化，在一批次MFC系統添加超音波水解污泥產物時，陽極槽中厭氧微生物較以葡萄糖為基質者適合生存。

關鍵字

微生物燃料電池、廢棄活性污泥、超音波水解、葡萄糖、庫倫效率

並列摘要

In the research, waste activated sludge from urban wastewater treatment plants were used as the substrate to carry out investigation on the electricity generation efficiency of microbial fuel cell (MFC). The result was compared to the result of glucose substrate. It was hoped that, the solid organic substances in the sludge can be crushed by applying hydrolytic technique to improve the efficiency microbial degradation in the anode compartment of the MFC and increase the electricity generation efficiency of the MFC.
The experiment result showed that, when adding glucose load by 4 gCOD/gMLVSS．day, the highest voltage produced by the complete reaction of a batch of MFC was 0.68V, the SCOD removal ratio in the anode compartment was 80% and the coulombic efficiency produced by the MFC system was 49%; the pH value in the anode compartment maintained at 4. However, when using the sludge product from ultrasonic hydrolysis as the added substrate while the loading was 3 gCOD/gMLVSS．day, the highest voltage produced by the complete reaction of a batch of MFC was 0.52V, the SCOD removal ratio in the anode compartment was 70% and the coulombic efficiency produced by the MFC system was 40%; the pH value in the anode compartment maintained at 6.5.
The above results indicated that, in terms of voltage, it is higher when glucose is added than if the hydrolytic product from the ultrasonic hydrolysis of sludge is added. The average SCOD removal rate of both substrates is between 70~80%, which means the removal ratio are close. In terms of pH value, the sludge product from ultrasonic hydrolysis has high alkalinity and large amounts of organic substances which may buffer the impact on the pH value and is more difficult to acidify than the glucose substrate. When adding the sludge product from ultrasonic hydrolysis in a batch of MFC system, anaerobe would survive better than glucose in the anode compartment.

並列關鍵字

Waste activated sludge ； MFC ； Microbial fuel cell ； Ultrasonic hydrolysis ； Glucose ； Coulombic dfficiency

參考文獻

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