氮氧自掺杂生物质多孔炭修饰阴极的生物电芬顿产电及其对氯霉素的降解性能  

Performance of electricity generation and chloramphenicol degradation by a bioelectro-Fenton cathode modified by N and O self-doped biomass porous carbon

作　　者：吉运 邓宇 杨爱江[1] 胡霞 周集体[3] JI Yun;DENG Yu;YANG Aijiang;HU Xia;ZHOU Jiti(College of Resources and Environmental Engineering,Key Laboratory of Karst Georesources and Environment,Ministry of Education,Guizhou University,Guiyang 550025,China;Guizhou Karst Environmental Ecosystems Observation and Research Station,Ministry of Education,Guiyang 550025,China;School of Environmental Science and Technology,Dalian University of Technology,Dalian 116024,China)

机构地区：[1]贵州大学资源与环境工程学院,喀斯特地质资源与环境教育部重点实验室,贵阳550025 [2]贵州大学喀斯特环境生态系统教育部野外科学观测研究站,贵阳550025 [3]大连理工大学环境学院,大连116024

出　　处：《环境工程学报》2022年第11期3587-3595,共9页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(52160014)。

摘　　要：以黑豆为前驱体制备出具有多孔形貌的氮氧自掺杂生物炭(NOPC)材料,利用SEM、XPS、XRD、BET等手段对NOPC进行了表征和分析,并将NOPC负载于生物电芬顿体系的阴极碳布上,考察了生物电芬顿的产电性能及其对氯霉素的降解性能。结果表明:负载NOPC的生物电芬顿体系内阻明显降低,最大功率密度有所升高。与纯碳布电极相比,负载NOPC的生物电芬顿体系在24 h内H_(2)O_(2)的生成量增加了46.15%,且对50 mg·L^(-1)和1 mg·L^(-1)的氯霉素在24 h的降解率分别为36.38%和100%;而纯碳布的生物电芬顿体系在24 h内的降解率仅有28.45%和56.63%,负载NOPC的生物电芬顿体系对1 mg·L^(-1)氯霉素的降解率提高了43.37%。以上结果表明NOPC不仅可以提高生物电芬顿体系的产电性能,还能提高氯霉素的降解效率,同时也表明生物电芬顿体系更适用于含有低浓度氯霉素水体的处理。N and O self-doped biomass porous carbon(NOPC) was prepared using the black soya beans as precursor, and it was characterized and analyzed by SEM, XPS, XRD and BET. Then NOPC was loaded to onto the carbon cloth as bioelectric-Fenton cathode, the electrical production performance and chloramphenicol degradation effect were investigated. The result shows that the internal resistance of bioelectric-Fenton system decreased significantly and its maximum power density increased. Compared with carbon cloth cathode, the H_(2)O_(2)production of bioelectro-Fenton with NOPC-loaded cathode increased by 46.15% after 24 h, for 50 mg·L^(-1)and 1 mg·L^(-1)chloramphenicol, the degradation rates were 36.38% and 100% at 24 h, respectively, while the chloramphenicol degradation rates were only 28.45% and 56.63% in the bioelectro-Fenton with carbon cloth at24 h, respectively. The chloramphenicol degradation rate at the initial content of 1 mg·L^(-1)increased by 43.37%in bioelectro-Fenton with NOPC loaded cathode. The results indicate that NOPC could not only improve the performance of electricity generation, but also improve the chloramphenicol degradation rate in the bioelectroFenton system, and bioelectro-Fenton is more suitable for treating water with chloramphenicol of low initial concentration.

关 键 词：生物质多孔炭 生物电芬顿 产电性能 氯霉素降解 

分 类 号：X703[环境科学与工程—环境工程]