本文選題：微生物燃料電池　切入點：剩余污泥　出處：《中國環(huán)境科學(xué)》2015年12期

【摘要】：采用剩余污泥厭氧發(fā)酵液為陽極燃料、鐵氰化鉀溶液為陰極電子受體,成功啟動了雙室微生物燃料電池(WC)考察了厭氧發(fā)酵過程中剩余污泥上清液中各種揮發(fā)性脂肪酸(VFAs)含量的變化,研究分析了污泥厭氧發(fā)酵液燃料電池的產(chǎn)電過程、燃料消耗及電子供體.結(jié)果表明,污泥厭氧發(fā)酵液中乙酸含量最高(約占總VFAs的50%),異戊酸和丙酸含量次之(分別約占總VFAs的18%及15%),正丁酸和異丁酸含量較少(均低于總VFAs的10%),正戊酸含量最低(低于總VFAs的1%);MFC實現(xiàn)了250h穩(wěn)定電壓輸出(0.65±0.05V),庫倫效率為9.09%;陽極總化學(xué)需氧量(TCOD),溶解性化學(xué)需氧量(SCOD),VFAs均呈現(xiàn)整體下降趨勢,TCOD和SCOD的去除率分別為74.9%和86.4%;VFAs的完全消耗伴隨著反應(yīng)器產(chǎn)電性能迅速變差,表明VFAs是主要電子供體;在MFC產(chǎn)電過程中,VFAs的消耗與產(chǎn)生同時存在,消耗總體快于產(chǎn)生;各種VFAs消耗快慢依次為:乙酸正丁酸丙酸正戊酸異戊酸異丁酸.
[Abstract]:The anaerobic fermentation broth of excess sludge was used as anode fuel, and potassium ferricyanide solution was used as cathode electron receptor. The changes of volatile fatty acids (VFASs) in excess sludge supernatant during anaerobic fermentation were investigated by starting a two-chamber microbial fuel cell successfully, and the process of producing electricity from sludge anaerobic fermentation liquid fuel cell was analyzed. Fuel consumption and electronic donors. Results show that. The content of acetic acid in anaerobic fermentation broth of sludge was the highest (about 50% of total VFAs, followed by isovaleric acid and propionic acid) (about 18% and 15% of total VFAs, respectively), the content of n-butyric acid and isobutyric acid was lower (both lower than the total VFAs of 10%), and the content of n-valerate was the lowest (low). The 250h steady voltage output is 0.65 鹵0.05V ~ (-1) and the Coulomb efficiency is 9.09. The total anodic chemical oxygen demand (TCOD) and dissolved chemical oxygen demand (VFAs) have all shown an overall downward trend. The removal rates of TCOD and SCOD are 74.9% and 86.4% respectively, which are accompanied by the complete consumption of VFAs. The electrical performance of the reactor becomes worse rapidly, The results showed that VFAs was the main electron donor, the consumption and production of MFC existed simultaneously, and the consumption of VFAs was faster than that of production, and the order of consumption of VFAs was n butyrate propionate propionate isovalerate isobutyric acid.
【作者單位】： 同濟(jì)大學(xué)環(huán)境科學(xué)與工程學(xué)院污染控制與資源化國家重點實驗室;上海城市管理職業(yè)技術(shù)學(xué)院土木工程與交通學(xué)院;
【基金】：國家科技支撐計劃課題(2013BAD21B03) 同濟(jì)大學(xué)“盛云飛大學(xué)生科技創(chuàng)新實踐基金”資助課題
【分類號】：X703;TM911.45

【參考文獻(xiàn)】

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本文編號：1666513