Department of Biotechnology, Lund University, Lund SE-221 00, Sweden.
Bioresour Technol. 2011 Nov;102(22):10221-9. doi: 10.1016/j.biortech.2011.08.053. Epub 2011 Sep 1.
A wall-jet microbial fuel cell (MFC) was developed for the monitoring of anaerobic digestion (AD). This biofilm based MFC biosensor had a character of being portable, short hydraulic retention time (HRT) for sample flow through and convenient for continuous operation. The MFC was installed in the recirculation loop of an upflow anaerobic fixed-bed (UAFB) reactor in bench-scale where pH of the fermentation broth and biogas flow were monitored in real time. External disturbances to the AD were added on purpose by changing feedstock concentration, as well as process configuration. MFC signals had good correlations with online measurements (i.e. pH, gas flow rate) and offline analysis (i.e. COD) over 6-month operation. These results suggest that the MFC signal can reflect the dynamic variation of AD and can potentially be a valuable tool for monitoring and control of bioprocess.
为监测厌氧消化（AD）而开发了一种壁射微生物燃料电池（MFC）。这种基于生物膜的 MFC 生物传感器具有便携性、短水力停留时间（HRT）用于样品流动以及便于连续操作的特点。MFC 安装在升流式厌氧固定床（UAFB）反应器的循环回路中，在该回路中实时监测发酵液的 pH 值和沼气流量。通过改变进料浓度以及工艺配置，有目的地对 AD 进行外部干扰。MFC 信号与 6 个月的在线测量（即 pH 值、气体流量）和离线分析（即 COD）具有良好的相关性。这些结果表明，MFC 信号可以反映 AD 的动态变化，并且可能成为生物过程监测和控制的有用工具。
