State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China.
State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, PR China.
Bioresour Technol. 2015 Jun;185:426-30. doi: 10.1016/j.biortech.2015.02.108. Epub 2015 Mar 6.
A homogeneous carbon membrane with multi-functions of microfiltration, electron conduction, and oxygen reduction catalysis was fabricated without using noble metals. The produced carbon membrane has a pore size of 553nm, a resistance of 6.0±0.4Ωcm(2)/cm, and a specific surface area of 32.2m(2)/g. After it was assembled in microbial fuel cell (MFC) as filtration air cathode, a power density of 581.5mW/m(2) and a current density of 1671.4mA/m(2) were achieved, comparable with previous Pt air cathode MFCs. The filtration MFC was continuously operated for 20days and excellent wastewater treatment performance was also achieved with removal efficiencies of TOC (93.6%), NH4(+)-N (97.2%), and total nitrogen (91.6%). In addition, the carbon membrane was much cheaper than traditional microfiltration membrane, suggesting a promising multi-functional material in wastewater treatment field.
一种无需使用贵金属即可制备的具有微滤、电子传导和氧还原催化多功能的均质碳膜。所制备的碳膜的孔径为 553nm，电阻为 6.0±0.4Ωcm(2)/cm，比表面积为 32.2m(2)/g。将其组装在微生物燃料电池（MFC）作为过滤空气阴极后，可获得 581.5mW/m(2)的功率密度和 1671.4mA/m(2)的电流密度，与之前的 Pt 空气阴极 MFC 相当。过滤 MFC 连续运行 20 天，对 TOC（93.6%）、NH4(+)-N（97.2%）和总氮（91.6%）的去除效率也非常高。此外，该碳膜比传统微滤膜便宜得多，有望成为废水处理领域的一种有前途的多功能材料。
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