Intelligent Fiber Sensing Technology of Chongqing Municipal Engineering Research Center of Institutions of Higher Education, Chongqing Key Laboratory of Modern Photoelectric Detection Technology and Instrument, Chongqing Key Laboratory of Fiber Optic Sensor and Photodetector , Chongqing University of Technology , Chongqing 400054 , China.
School of Chemistry and Chemical Engineering , Chongqing University of Technology , Chongqing 400054 , China.
Anal Chem. 2019 Dec 3;91(23):15155-15162. doi: 10.1021/acs.analchem.9b03923. Epub 2019 Nov 12.
Simple D-type plastic optical fiber (POF) probes (i.e., sensor, reference, and photochemical probes) were created to accurately monitor the progression and phenol degradation of a biofilm. The sensor and reference probes were used to monitor the biofilm growth (thickness). The sensor probe, which consisted of a D-shaped POF and Canada balsam doped with GeO (CBG) coating, was developed to monitor the biofilm growth and change in the liquid-phase composition and its concentration inside the biofilm. The reference probe, which comprised a D-shaped POF, CBG coating, and glass fiber membrane (to separate the liquids from ), was used to measure the response to changes in the liquid phase. A model was developed to demonstrate the accurate measurement of the biofilm thickness. The photochemical POF probe was coupled with a high-permselectivity phenol polymer membrane to monitor the phenol concentration and analyze the degradation time of 50 mg/L phenol with microalgal biofilms. A fixed relationship was obtained between the biofilm sensor output information and biofilm thickness for a biofilm thickness range of 0-290 μm with a periodic supply of 50 mg/L phenol solution. The highest phenol degradation rate occurred at a biofilm thickness of 191-222 μm. The proposed system can be used to investigate microalgal biomass and can provide a promising avenue for research on renewable resources and pollutant degradation.
简单的 D 型塑料光纤（POF）探头（即传感器、参考和光化学探头）被创建，以准确监测生物膜的进展和苯酚降解。传感器和参考探头用于监测生物膜生长（厚度）。传感器探头由 D 形 POF 和掺有 GeO 的加拿大香脂（CBG）涂层组成，用于监测生物膜生长以及生物膜内液相组成和浓度的变化。参考探头由 D 形 POF、CBG 涂层和玻璃纤维膜（用于将液体与）组成，用于测量对液相变化的响应。建立了一个模型来演示生物膜厚度的准确测量。光化学 POF 探头与高选择性苯酚聚合物膜耦合，用于监测苯酚浓度并分析微藻生物膜对 50mg/L 苯酚的降解时间。对于周期性供应 50mg/L 苯酚溶液的生物膜厚度范围为 0-290μm 的生物膜，获得了生物膜传感器输出信息与生物膜厚度之间的固定关系。在生物膜厚度为 191-222μm 时，苯酚的降解率最高。所提出的系统可用于研究微藻生物量，并为可再生资源和污染物降解的研究提供有前途的途径。
