以发泡镍为基体,柱状活性炭颗粒和Ti O2粉末均匀混合后作为催化剂涂覆在电极表面。将此复合电极作为双室生物阴极型MFC的电极,研究MFC的产电性能。结果表明:在运行周期内,系统最大输出电压可达到698.1 m V,稳定在500 m V以上的高电压输出时间为18 d;单位质子膜面积上可获得最大功率密度为183.33W/m4,质子膜的使用量明显减少,从而大大降低了MFC的产电成本。同时,阳极室对原生活污水COD去除率可达到74%,而库伦效率也可达到68.9%。试验结果表明,活性炭和Ti O2混合涂覆镍基体电极对双室生物阴极型MFC产电的催化效果良好。
The foamed nickel was used as the substrate of catalyst, which evenly coated with the mixing of columnar activated carbon particles and Ti O2 powder on the electrode surface. The experiment used this composite electrode as the electrode of two chamber bio-cathode MFC(microbial fuel cell), to study the power generation performance in MFC. The results showed that in running cycle,the maximum output voltage of the system can be up to 698.1 m V,the duration of output value of high voltage over 500 m V kept stably for 18 d;the maximum power density of per unit of proton membrane area could achieve 183.33 W/m4,the usage of proton membrane decreased significantly, which greatly reduced the electricity production costs of MFC. At the same time, the sewage COD(chemical oxygen demand) removal rate of by anode chamber can reach 74% and the CE(coulomb efficiency) can reach 68.9%. The results of experiment showed that the mixing of activated carbon and Ti O2 was coated on nickel substrate electrode had a good catalytic effect on electricity production of two chamber bio-cathode MFC.