本文選題：微生物燃料電池 + 填充床電極��； 參考：《中國礦業(yè)大學(xué)》2017年碩士論文

【摘要】：該論文以鋼絲球、顆�；钚蕴恳约颁摻z球和顆�；钚蕴炕旌喜牧献鳛槲⑸锶剂想姵�(MFC)填充床陽極的電極材料,通過分析MFC的產(chǎn)電特性比選出最優(yōu)的陽極填充材料;再采用此陽極材料搭建填充床MFC,研究陰陽極室理化條件對填充床MFC的產(chǎn)電性能影響;并探討填充床MFC陽極產(chǎn)電微生物對苯酚、高鹽度等逆環(huán)境的耐受能力和對有害物質(zhì)的降解能力。試驗啟動過程中,MFC陰極材料為鋼絲球和活性炭組成的復(fù)合填充陰極,陰極氧化劑為高錳酸鉀,試驗接種菌種為徐州市某白酒廠廢水處理系統(tǒng)的厭氧池污泥,MFC采用序批式方式啟動運行,運行周期為24小時。試驗結(jié)果表明鋼絲球填充陽極MFC經(jīng)過24小時順利啟動,穩(wěn)定運行后最大外電壓為0.5V,最大功率密度為3197mW/m3。鋼絲球陽極填充床MFC的啟動速度、外電壓、功率密度等重要指標在三種MFC陽極中均為最優(yōu)。通過對MFC主要產(chǎn)電性能指標的對比分析發(fā)現(xiàn)鋼絲球作為MFC陽極填充床電極最優(yōu),其主要原因是鋼絲球具有較大的比較面積為陽極產(chǎn)電微生物提供附著生長的空間,并且鋼絲球作為一個整體具有良好的導(dǎo)電性和穩(wěn)定性。采用鋼絲球陽極填充床MFC探討陰陽極室條件對填充床MFC產(chǎn)電性能影響,重點關(guān)注陰極高錳酸鉀濃度、PH值、水力循環(huán)以及陽極底物濃度和PH值對MFC產(chǎn)電性能的影響。試驗結(jié)果表明增加陰極高錳酸鉀濃度會增加陰極電勢從而增強MFC的產(chǎn)電性能;高錳酸鉀陰極最佳陰極PH為5;MFC的最大功率密度隨水力循環(huán)流量的增加是先增加后減小,陰極增加水力循環(huán)會增強陰極的傳質(zhì)效率同時防止二氧化錳在陰極沉積,但過大的水力梯度會促使氧化劑進入MFC陽極破壞陽極厭氧環(huán)境從而降低MFC的產(chǎn)電性能;MFC陽極底物濃度存在產(chǎn)電限制濃度,當有機底物濃度低于限制濃度時產(chǎn)電性能與底物濃度正相關(guān),當有機底物濃度高于限制濃度時產(chǎn)電性能不受有機底物濃度影響,本試驗中的限制濃度為2700 mg/L;本試驗中產(chǎn)電菌最適的PH值為7到8。采用鋼絲球填充床陽極MFC探討陽極產(chǎn)電微生物對苯酚和高鹽度的耐受能力。試驗結(jié)果表明MFC陽極產(chǎn)電微生物對苯酚有較強的耐受能力和降解能力,當陽極液苯酚濃度達到450mg/L時MFC的產(chǎn)電性能才受到了抑制,24小時候后更換陰極液,MFC的產(chǎn)電能力得以恢復(fù)。MFC的陽極微生物對鹽度有良好的耐受能力,當氯化鈉濃度達到50g/L時MFC的產(chǎn)電性能才能受到明顯抑制,恢復(fù)陽極正常鹽度后經(jīng)過24后MFC的產(chǎn)電性能能夠得以恢復(fù)。
[Abstract]:In this paper, steel wire ball, granular activated carbon and hybrid material of steel wire ball and granular activated carbon are used as electrode materials of microorganism fuel cell (MFCs) filled bed anode, and the optimal anode filling material is selected by analyzing the electrical characteristics of MFC. The effect of the physical and chemical conditions of anode and anode chamber on the electrical properties of packed bed MFC was studied, and the electroproducing microorganism of MFC anode in packed bed was investigated. Tolerance to adverse environments such as high salinity and ability to degrade harmful substances. During the start-up of the test, the cathode material of MFC is a composite filled cathode composed of steel wire ball and activated carbon, and the cathode oxidant is potassium permanganate. The anaerobic sludge cell (MFC), which was inoculated in a liquor plant wastewater treatment system in Xuzhou City, was started in sequence batch mode, and the operation period was 24 hours. The test results show that the wire ball filled anode MFC starts smoothly after 24 hours, the maximum external voltage is 0.5V and the maximum power density is 3197mW / m3after stable operation. The starting speed, external voltage and power density of the steel wire ball anode packed bed MFC are all optimal in the three kinds of MFC anodes. By comparing and analyzing the main electrical properties of MFC, it is found that the steel wire ball is the best electrode for MFC anode packed bed, and the main reason is that the steel wire ball has a large comparative area to provide the space for the adhesion and growth of the anode electrically producing microorganism. And the wire ball as a whole has good conductivity and stability. The effect of anode and anode chamber conditions on the electrical properties of MFC was investigated by using steel wire ball anode packed bed (MFC). The effect of concentration of cathode potassium permanganate (KMnO), hydraulic cycle, and the concentration of anode substrate and PH on the electrical properties of MFC was focused on. The experimental results show that increasing the concentration of potassium permanganate at the cathode increases the cathode potential and enhances the electrical properties of the MFC, and the maximum power density of the MFC increases first and then decreases with the increase of hydraulic circulation flow. An increase in hydraulic cycling increases the mass transfer efficiency of the cathode and prevents manganese dioxide from depositing at the cathode. However, if the hydraulic gradient is too large, the oxidant will enter the anaerobic environment of MFC anode to destroy the anode, which will reduce the electrical performance of MFC and the concentration of anode substrate of MFC will be limited by the concentration of electricity. When the concentration of organic substrate is lower than the limited concentration, the electrical performance is positively correlated with the concentration of substrate, and when the concentration of organic substrate is higher than the limited concentration, the electrical performance is not affected by the concentration of organic substrate. The limiting concentration in this experiment is 2700 mg / L, and the optimum PH value of electrogenic bacteria in this experiment is 7 to 8. The resistance of anodic electroproducing microorganisms to phenol and high salinity was investigated by using MFC of steel wire ball packed bed anode. The results showed that MFC anodic electroproducing microorganisms had strong tolerance and degradation ability to phenol. When the concentration of phenol in anodic solution reached 450mg/L, the electrical properties of MFC were inhibited. After 24 hours, the electricity production ability of replacing cathode solution was recovered. The anode microorganism of MFC had good tolerance to salinity. When the concentration of sodium chloride reached 50g/L, the electrical properties of MFC could be obviously inhibited, and the electrical properties of MFC could be restored after 24 years after the normal salinity of anode was restored.
【學(xué)位授予單位】：中國礦業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：X703;TM911.45

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