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  本文選題：微生物燃料電池(MFC)　切入點：陽離子交換膜　出處：《南京理工大學》2015年碩士論文　論文類型：學位論文

【摘要】：環(huán)境污染和能源短缺問題越來越嚴重,能同時處理污廢水和產(chǎn)生能源的微生物燃料電池(MFC)被廣泛關(guān)注和研究。MFC的原理是利用活性微生物降解有機底物(污廢水中的污染物),同時得到可利用的能源,例如電能或氫能等。但由于MFC的輸出功率低,成本高,使得MFC實際應(yīng)用受到限制。所以研究如何提高MFC的輸出功率成為推進MFC實際應(yīng)用的重要方向。主要圍繞MFC所用的陽離子交換膜及MFC的影響因子展開研究�；腔鄯济秧�(SPAES)和磺化聚酰亞胺(SPI)膜具有良好的電導(dǎo)率和機械性能,將其應(yīng)用于MFC中,結(jié)果表明：在短期內(nèi),MFC的性能主要受離子交換容量(IEC)的影響：IEC高,MFC的內(nèi)阻低,輸出功率密度高,這主要由于膜的質(zhì)子傳導(dǎo)能力和陽極微生物的附著生長的影響。在長期運行中,MFC的輸出功率主要跟膜的電導(dǎo)率、陽極微生物和膜的污染有關(guān)。高IEC的膜,由于具有更多磺酸基團,膜的親水性和生物相容性增加,使得膜的抗污能力降低。比較SPAES、SPI膜和商用陽離子交換膜(CEM)在MFC中的性能,SPAES和SPI膜都表現(xiàn)出優(yōu)于CEM的膜性能和電池性能。同時也研究了操作條件對MFC性能的影響,結(jié)果表明：陰極電子受體K3Fe(CN)6濃度為50mM,陽極電極表面積為60cm2,陽離子膜用酸預(yù)處理以及增大陽極液體積時,得到的MFC的輸出功率密度最大。不銹鋼絲網(wǎng)在MFC的長期運行中會發(fā)生電化學反應(yīng)和腐蝕,對微生物產(chǎn)生毒害作用,從而降低MFC的輸出功率。選擇性能優(yōu)異的膜材料和最優(yōu)的操作條件能有效提高MFC的輸出功率,有望使得MFC得到實際應(yīng)用。
[Abstract]:Environmental pollution and energy shortages are becoming more and more serious. Microbial fuel cell (MFC), which can treat wastewater and generate energy at the same time, has been widely concerned and studied. The principle of .MFC is to use active microorganisms to degrade organic substrates (pollutants in wastewater) and to obtain available energy. For example, electric energy or hydrogen energy, etc., but because of the low output power of MFC, the cost is high. Therefore, how to improve the output power of MFC has become an important direction to promote the practical application of MFC. The study mainly focuses on the cationic exchange membrane used in MFC and the influence factors of MFC. Sulfonation Polymerization. Aryl ether sulfone SPAESs and sulfonated polyimide (SPI) membranes have good electrical conductivity and mechanical properties. The results show that the performance of MFC is mainly affected by the ion exchange capacity (IEC) in the short term, and the internal resistance is low and the output power density is high. This is mainly due to the proton conductivity of the membrane and the effect of the adhesion and growth of the anode microorganism. The output power of the membrane is mainly related to the conductivity of the membrane, the microorganism of the anode and the fouling of the membrane. With more sulfonic groups, the hydrophilicity and biocompatibility of the membranes increased, The antifouling ability of SPAESS-SPI membrane and commercial cationic exchange membrane (CEM) in MFC were compared. The performance of spas and SPI was better than that of CEM. The effect of operating conditions on the performance of MFC was also studied. The results show that the concentration of cathode electron receptor K _ 3FeN _ (6) is 50 mm, the surface area of anode electrode is 60 cm ~ (2). When the cationic membrane is pretreated with acid and increases the volume of anodic solution, The output power density of the obtained MFC is the highest. The stainless steel wire mesh will occur electrochemical reaction and corrosion in the long run of MFC, which will have toxic effect on microorganism. Thus, the output power of MFC can be reduced, and the excellent membrane material and the optimal operating conditions can effectively increase the output power of MFC, which is expected to make MFC be applied in practice.
【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM911.45;X703

【共引文獻】

相關(guān)期刊論文 前3條

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2 唐衛(wèi)芬;凌瑛;陳珊珊;胡朝霞;陳守文;;交聯(lián)嵌段磺化聚芳醚砜質(zhì)子交換膜的制備及性能[J];高等學�；瘜W學報;2013年11期

3 王飛龍;冉冬琴;張彤;畢慧平;胡朝霞;陳守文;;嵌段磺化聚芳醚砜陽離子交換膜的制備及在MFC中的發(fā)電性能研究[J];高分子學報;2014年05期

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本文編號：1623257