Chemical Engineering Department, University of León, IRENA-ESTIA, Avda. de Portugal 41, León 24009, Spain.
Bioresour Technol. 2011 Oct;102(20):9593-8. doi: 10.1016/j.biortech.2011.08.026. Epub 2011 Aug 10.
This study investigates the influence of anode and cathode size and arrangement on hydrogen production in a membrane-less flat-plate microbial electrolysis cell (MEC). Protein measurements were used to evaluate microbial density in the carbon felt anode. The protein concentration was observed to significantly decrease with the increase in distance from the anode-cathode interface. Cathode placement on both sides of the carbon felt anode was found to increase the current, but also led to increased losses of hydrogen to hydrogenotrophic activity leading to methane production. Overall, the best performance was obtained in the flat-plate MEC with a two-layer 10 mm thick carbon felt anode and a single gas-diffusion cathode sandwiched between the anode and the hydrogen collection compartments.
本研究考察了在无膜平板微生物电解池（MEC）中，阳极和阴极的大小和排列对产氢的影响。通过蛋白质测量来评估碳纤维阳极中的微生物密度。观察到蛋白质浓度随着距阳极-阴极界面的距离增加而显著降低。发现将阴极放置在碳纤维阳极的两侧会增加电流，但也会导致更多的氢气损失给氢营养活性，从而导致甲烷的生成。总的来说，在具有两层 10 毫米厚碳纤维阳极和夹在阳极和氢气收集室之间的单个气体扩散阴极的平板 MEC 中获得了最佳性能。
