Electricity Generation From Membrane-less Microbial Fuel Cell During Wastewater Treatment

• Main Authors: Ying-Cin Wang, 王盈欽
• Other Authors: Chi-Yuan Lee
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/42990251655168576805

碩士 === 國立臺灣海洋大學 === 河海工程學系 === 95 === Electricity generation from membrane-less microbial fuel cells (ML-MFC) with the external resistance of 500 Ω was conducted in this study. The fuels for test include supernatant from primary sediment tank and the mixture of primary supernatant combined with glucose solution. Experimental works consist of three phases: hydraulic loading, organic loading, and aeration rate. As hydraulic retention time decreased from 48 to 6 hr, COD removal efficiency remained unchanged but coulomb efficiency and power density decreased. When fuel concentration increased from 150 to 1000 mg COD/L, COD removal exhibited a Monod-type Kinetics related to fuel concentration, the removal efficiency increased from 72 to 91 %, but coulomb efficiency and power density decreased. When aeration rate in cathode increased from 0 to 400 mL/min, COD removal efficiency exhibited a Monod-type Kinetics related to aeration rate, coulomb efficiency and power density increased. The Results indicated that, COD removal efficiency reached the level of wastewater treatment facilities currently employed, while electricity generation, and the maximum power output of the ML-MFC was quite low, implying that most organics degraded in a pathway without producing electricity.