(1. 湖南城市學(xué)院 材料與化學(xué)工程學(xué)院，益陽 413000；
2. 吉首大學(xué) 生物資源與環(huán)境科學(xué)學(xué)院，吉首 416000)
摘 要: 構(gòu)建以F026為陽極產(chǎn)電菌和含Cr(VI)電解錳廢水為陰極液的雙室微生物燃料電池(MFC)。考察電解錳模擬廢水pH、Cr(VI)初始質(zhì)量濃度、MFC運(yùn)行溫度等因素對廢水中Cr(VI)的還原率及MFC產(chǎn)電效果的影響規(guī)律，并對最優(yōu)條件下MFC處理實(shí)際電解錳含鉻廢水的效果和Cr(VI)的還原產(chǎn)物進(jìn)行研究。結(jié)果表明：當(dāng)廢水pH為2、MFC運(yùn)行溫度為303K時(shí)，MFC對含Cr(VI)廢水具有最佳的處理效果。在此條件下，MFC對Cr(VI)質(zhì)量濃度為124 mg/L的電解錳廢水處理80 h后，92.1%的Cr(VI)可有效還原為α-Cr2O3，而155h處理后還原率可達(dá)100%，產(chǎn)電功率達(dá)到914.7 mW/cm2，表明MFC是一種發(fā)展前景良好的含Cr(VI)電解錳廢水處理工藝。
關(guān)鍵字: 電解錳廢水；六價(jià)鉻；微生物燃料電池；產(chǎn)電性能
（1.College of Materials and Chemical Engineering, Hunan City University, Yiyang 413000, China;
2. College of Biology and Environmental Sciences, Jishou University, Jishou 416000, China）
Abstract:A dual-chamber microbial fuel cell (MFC) was constructed with F026 as electricigen and Cr(VI) containing electrolytic manganese wastewater as catholyte. The influences of pH, initial Cr(VI) concentration of simulated electrolytic manganese wastewater and operating temperature of MFC on the reduction rate of Cr(VI) and electricity generation of MFC were investigated. The results show that when the pH is 2 and operating temperature is 303K, the optimal treatment effect by MFC can be achieved. Under these conditions, 92.1% of Cr(VI) is reduced to Cr2O3 in 80 h, and the complete Cr(VI) reduction and more than 914.7 mW/m2 powder density are obtained in 155 h for the real electrolytic manganese wastewater with Cr(VI) concentration of 124 mg/L, indicating that MFC may be a promising technology for the treatment of Cr(VI) containing electrolytic manganese wastewater.
Key words: electrolytic manganese wastewater; Cr(VI); microbial fuel cell; electricity generation
