Bioengineering and Environmental Centre (BEEC), CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 607, India.
Bioresour Technol. 2012 Nov;123:480-7. doi: 10.1016/j.biortech.2012.07.049. Epub 2012 Jul 22.
The electrogenic activity of microbial fuel cell (MFC) with the function of anode placement from the terminal electron acceptor (TEA) was evaluated. Shorter anode distances from TEA showed higher electrogenesis due to the feasibility of higher electron acceptance as well as their discharge towards TEA. Substrate degradation was also higher at shorter anode placements from TEA due to the optimum substrate availability to the anodic biofilm. Bio-electro kinetics showed significant variation in the catalytic currents and exchange current densities with the function of anode placement indicating its role in electron acceptance and their transfer to the cathode. Anode placement of 3cm showed higher electrogenesis (406.38mW/m(2)) and substrate degradation (63.12%) along with significantly reduced polarization (6.72Ω) and charge transfer resistances compared to other anodic placements. The spacing between electrodes is crucial in accepting electrons as well as their discharge towards TEA which ultimately governs the power generation efficacy.
评估了从末端电子受体（TEA）处改变阳极位置对微生物燃料电池（MFC）发电性能的影响。由于较高的电子接受能力以及向 TEA 的放电能力，较短的阳极距离表现出更高的发电性能。由于阳极生物膜对底物的最佳利用，较短的阳极距离下也实现了更高的底物降解。生物电化学动力学表明，催化电流和交换电流密度随阳极位置的变化而显著变化，这表明阳极位置在电子接受及其向阴极的转移中起作用。与其他阳极位置相比，阳极距离为 3cm 时表现出更高的发电性能（406.38mW/m(2)）和底物降解（63.12%），同时极化（6.72Ω）和电荷转移电阻显著降低。电极之间的间距对于接受电子以及向 TEA 的放电至关重要，这最终决定了发电效率。
