University of Castilla-La Mancha, ITQUIMA, Chemical Engineering Department, Avenida Camilo José Cela S/N., 13071 Ciudad Real, Spain; University of Vigo, Department of Chemical Engineering, Isaac Newton Building, Campus As Lagoas, Marcosende, 36310 Vigo, Spain.
University of Vigo, Department of Chemical Engineering, Isaac Newton Building, Campus As Lagoas, Marcosende, 36310 Vigo, Spain.
Bioresour Technol. 2016 Jan;200:396-404. doi: 10.1016/j.biortech.2015.10.010. Epub 2015 Oct 21.
In this work, the fermentative and oxidative processes taking place in a microbial fuel cell (MFC) fed with glucose were studied and modeled. The model accounting for the bioelectrochemical processes was based on ordinary, Monod-type differential equations. The model parameters were estimated using experimental results obtained from three H-type MFCs operated at open or closed circuits and fed with glucose or ethanol. The experimental results demonstrate that similar fermentation processes were carried out under open and closed circuit operation, with the most important fermentation products being ethanol (with a yield of 1.81molmol(-1) glucose) and lactic acid (with a yield of 1.36molmol(-1) glucose). A peak in the electricity generation was obtained when glucose and fermentation products coexisted in the liquid bulk. However, almost 90% of the electricity produced came from the oxidation of ethanol.
在这项工作中，研究并建立了模型以了解微生物燃料电池（MFC）在以葡萄糖为底物时发生的发酵和氧化过程。该模型基于普通的 Monod 型微分方程来描述生物电化学过程。模型参数是使用从在开路或闭路下运行并以葡萄糖或乙醇为底物的三个 H 型 MFC 获得的实验结果进行估计的。实验结果表明，在开路和闭路操作下进行了类似的发酵过程，最重要的发酵产物是乙醇（葡萄糖产率为 1.81molmol(-1)）和乳酸（葡萄糖产率为 1.36molmol(-1)）。当液体主体中同时存在葡萄糖和发酵产物时，会出现发电高峰。然而，产生的电量几乎 90%来自乙醇的氧化。
