摘要
沉积型微生物燃料电池SMFC(sediment microbial fuel cell)在降低成本和放大实际操作方便性中具有重要地位,既能降解沉积物中有机污染物,又可同时输出电能的特性在自然水生态修复中有着广阔的应用前景。但其较高的氧扩散和基质扩散系数不适合其长期运行,且较低的库仑效率不能高效率地将有机污染物转化为电能。本文针对SMFC这一缺陷,利用质子膜、0.22μm孔径混合纤维膜和0.45μm孔径混合纤维膜对其进行改进,综合分析了其产电性能、物理化学特征、膜污染形态和有机质扩散等指标,0.22μm孔径混合纤维膜具有成本低,氧扩散和基质扩散低,库仑效率高和抗污染能力强等优点,适于拓展SMFC的应用前景。
Sediment microbial fuel cell （SMFC） has an important status in cost reduction and the amplifier of actual operation convenience. The characteristics of the degradation of organic pollutants in sediments and the simultaneous power generation have an extensive application prospect in natural water ecological restoration area. However, the high oxygen diffusion and diffusion coefficient matrix of it was not suitable for its long -- time running, and the low coulomb efficiency could not convert the organic pollutants into electrical energies efficiently. On account of this defect, this article improved the SMFC systems by using PEM （Proton Exchange Membrane）, 0. 45μm Synthetic Fabric Membrane and 0. 22μm Synthetic Fabric Membrane, respectively. This article analyzed its electricity generation performance, physicochemical properties, membrane pollution forms and organic matter diffusion and other indexes. Among them, 0. 22μm Synthetic Fabric Membrane had the advantages of low cost, low oxygen diffusion and matrix diffusion, high coulomb efficiency and strong antipollution ability, thus it was suitable for the development of the application prospects of SMFC.
出处
《四川环境》
2015年第3期1-7,共7页
Sichuan Environment
基金
国家自然科学基金(51379063)
江苏省自然科学基金(BK2012413)
