本文選題：生物燃料電池　切入點(diǎn)：濃度　出處：《燃料化學(xué)學(xué)報(bào)》2014年04期

【摘要】：以某生活污水處理廠缺氧池活性污泥為接種體,以葡萄糖為模擬生活廢水,構(gòu)建雙室型微生物燃料電池。利用微生物燃料電池(MFC,Microbial fuel cell)實(shí)現(xiàn)生活廢水降解與同步產(chǎn)電。研究基質(zhì)降解動(dòng)力學(xué)及溫度對(duì)MFC電極過(guò)程動(dòng)力學(xué)的影響,明確微生物電化學(xué)活性、陽(yáng)極傳荷阻抗、陽(yáng)極電勢(shì)、電池產(chǎn)能之間的關(guān)系,考察庫(kù)倫效率及COD去除率。研究結(jié)果表明,電池功率輸出與基質(zhì)濃度關(guān)系遵循莫頓動(dòng)力學(xué)方程:P=Pmaxc/(ks+c),其中,半飽和常數(shù)ks為138.5 mg/L,最大功率密度Pmax為320.2 mW/m2。葡萄糖濃度較小時(shí),反應(yīng)遵循一級(jí)動(dòng)力學(xué)規(guī)律:-dcA/dt=kcA,k=0.262 h-1。操作溫度從20℃提高到35℃,生物膜電化學(xué)活性不斷提高,傳荷阻抗從361.2Ω減小到36.2Ω,陽(yáng)極電極電勢(shì)不斷降低,同時(shí),峰值功率密度從80.6 mW/m2提高到183.3 mW/m2。45℃時(shí),產(chǎn)電菌活性降低,峰值功率密度減小到36.8 mW/m2。葡萄糖濃度為1 500 mg/L,溫度為35℃時(shí),MFC電化學(xué)性能最佳,穩(wěn)定運(yùn)行6 h后庫(kù)倫效率為44.6%,COD去除率為49.2%。
[Abstract]:The activated sludge of anoxic tank in a sewage treatment plant was used as inoculum and glucose was used to simulate the domestic wastewater. A two-chamber microbial fuel cell was constructed. The biodegradation of domestic wastewater and simultaneous generation of electricity were realized by using microbial fuel cell. The effects of substrate degradation kinetics and temperature on the kinetics of MFC electrode process were studied, and the electrochemical activity of microorganism was determined. The relationship between anode load transfer impedance, anode potential and battery capacity, Coulomb efficiency and COD removal efficiency were investigated. The results show that the relationship between battery power output and substrate concentration follows the Morton kinetic equation: 1. The half saturation constant ks is 138.5 mg / L, and the maximum power density Pmax is 320.2 MW / m2. When glucose concentration is small, the reaction follows the first order kinetic law: 1: -dcAr / dttttttttttcAK (0.262h-1.The operating temperature is increased from 20 鈩，

本文編號(hào)：1656717