摘要
研究微生物燃料电池在几种不同阴极液和曝气条件下处理餐饮废水及同步发电的性能。分别对以NaCl、K_3[Fe(CN)_6]和Na Cl+K_3[Fe(CN)_6]三种溶液为阴极液的微生物燃料电池进行了实验运行,对比分析了其产电性能和净水效果;对阴极室曝气和自然复氧两种条件下微生物燃料电池整体性能进行了对比研究。实验结果表明,阴极液和曝气条件的变化会影响微生物燃料电池的发电性能和净水效果。在以NaCl+K_3[Fe(CN)_6]混合液为阴极液且阴极室曝气的条件下,以餐饮废水为底物的微生物燃料电池的废水处理效果和产电能力最佳,相应的食堂原废水的产电电流密度稳态值为8.7m A·m^(-2),COD去除率为46.2%;模拟废水的产电电流密度稳态值为6.84 mA·m^(-2),COD去除率为33.1%。选择合适的阴极液和曝气状态,微生物燃料电池可有效处理餐饮废水并取得良好的发电性能。
Microbial fuel cells with several different catholytes and aeration conditions were used in restaurant wastewater treatment and simultaneous power generation. NaCl, K_3[Fe（CN）_6] and NaCl＋K_3[Fe（CN）_6] were selected as the catholyte, and the electricity generation and water purification performance of the microbial fuel cell were compared. Furthermore, comparative experiments of the microbial fuel cell under different aeration conditions were also studied. Experimental results show that variation of catholytes and aeration conditions can affect power generation and water purification performance of the microbial fuel cell, which shows best performance when the catholyte is NaCl＋K_3[Fe（CN）_6] and the cathode chamber keeps aeration. The corresponding steady current density of the raw restaurant wastewater is 8.7 mA·m^（-2） and COD removal efficiency is 46.2%. The steady current density and COD removal efficiency for the simulated wastewater is 6.84 mA·m^（-2） and 33.1%, respectively. Under appropriate catholyte and aeration conditions, the microbial fuel cell can treat restaurant wastewater effectively and also obtain good power generation performance.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2016年第2期491-496,共6页
Journal of Chemical Engineering of Chinese Universities
基金
沈阳市科学技术计划项目(F14-207-6-00)
辽宁省教育厅科学技术研究项目(L2012140)
国家自然科学基金项目(61143007)
关键词
微生物燃料电池
废水处理
产电
阴极液
曝气
microbial fuel cell
wastewater treatment
electricity generation
catholyte
aeration
