三室交互型微生物燃料电池阴极脱氮及产电性能研究

为解决微生物燃料电池阴极室中电极反硝化和非电极反硝化二者的冲突,构建出一种三室交互型微生物燃料电池。在一个循环周期内,电池功率密度平均27.0 mW/cm~2,反硝化速率平均0.92 mg/(L·h),所需有机碳源量COD/NO_3~-仅为3.9,整体性能优于相同条件下的传统双室型微生物燃料电池;交互式控制方式优于三室电池同时开关的运行方式;24 h是实验废水条件的最佳交互时间。三室交互型微生物燃料电池在高效脱氮产电的同时,充分利用了电子供体,节约了反硝化所需的有机碳源。

Cathodic Denitrification and Electricity Generation in a Three - chamber Interactive Microbial Fuel Cell

In order to solve the contradiction between electrode denitrification and non-electrode denitrification process in the cathodic chamber of microbial fuel cell, a three-chamber interactive microbial fuel cell was fabricated. In a reaction cycle, the average power density of the device is 27.0 mW / cm2, the integrated denitrification rate is 0.92 mg / (L ? h), and the organic carbon source consumption COD / NO3- is less than 4. All performance of the device is better than the traditional double-chamber microbial fuel cell under the same conditions. Interactive control mode is better than the ordinary three-chamber microbial fuel cell, whose switch is operated at the same time. The optimal interaction time for the wastewater under this experiment is 24h. The Three-chamber interactive microbial fuel cell can remove nitrogen and product electricity efficiently, simultaneously makes full use of electronic donor, saving the amount of organic carbon needed for denitrification.