Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia.
Centre for Technology in Water and Wastewater, School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW 2007, Australia; NTT Institute of Hi-Technology, Nguyen Tat Thanh University, Ho Chi Minh City, Viet Nam; Joint Research Centre for Protective Infrastructure Technology and Environmental Green Bioprocess, School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China.
Sci Total Environ. 2022 Nov 1;845:157125. doi: 10.1016/j.scitotenv.2022.157125. Epub 2022 Jul 2.
This research explores the possibilities of a dual-chamber microbial fuel cell as a biosensor to measure Bisphenol A (BPA) in wastewater. BPA is an organic compound and is considered to be an endocrine disruptor, affecting exposed organisms, the environment, and human health. The performance of the microbial fuel cells (MFCs) was first controlled with specific operational conditions (pH, temperature, fuel feeding rate, and organic loading rate) to obtain the best accuracy of the sensor signal. After that, BPA concentrations varying from 50 to 1000 μg L were examined under the biosensor's cell voltage generation. The outcome illustrates that MFC generates the most power under the best possible conditions of neutral pH, 300 mg L of COD, R 1000 Ω, and ambient temperature. In general, adding BPA improved the biosensor's cell voltage generation. A slight linear trend between voltage output generation and BPA concentration was observed with R 0.96, which indicated that BPA in this particular concentration range did not real harm to the MFC's electrogenic bacteria. Scanning electron microscope (SEM) images revealed a better cover biofilm after BPA injection on the surface electrode compared to it without BPA. These results confirmed that electroactive biofilm-based MFCs can serve to detect BPA found in wastewaters.
本研究探讨了双室微生物燃料电池作为生物传感器测量废水中双酚 A (BPA) 的可能性。BPA 是一种有机化合物，被认为是一种内分泌干扰物，会影响暴露的生物体、环境和人类健康。首先，通过控制特定的操作条件（pH 值、温度、燃料进料率和有机负荷率）来控制微生物燃料电池 (MFC) 的性能，以获得传感器信号的最佳精度。之后，在传感器的电池电压产生下，检查了从 50 到 1000 μg L 的 BPA 浓度。结果表明，在中性 pH 值、300 mg L 的 COD、R 1000 Ω 和环境温度等最佳条件下，MFC 产生的功率最大。总的来说，添加 BPA 会提高生物传感器的电池电压产生。观察到电压输出生成与 BPA 浓度之间存在轻微的线性趋势，相关系数为 R 0.96，这表明在此特定浓度范围内的 BPA 对 MFC 的产电细菌没有实际危害。扫描电子显微镜 (SEM) 图像显示，与没有 BPA 的情况相比，在表面电极上注入 BPA 后，生物膜的覆盖情况更好。这些结果证实，基于电活性生物膜的 MFC 可用于检测废水中的 BPA。
