Department of Civil Engineering, National Institute of Technology Karnataka, Surathkal, 575025, India.
J Environ Manage. 2021 Oct 15;296:113305. doi: 10.1016/j.jenvman.2021.113305. Epub 2021 Jul 26.
The present study involves a novel protocol to develop a ternary composite catalyst for an effective post-treatment technique for greywater. The ternary film of FeO-TiO/polyvinyl pyrrolidine (PVP) is coated on a glass tube using spray coating with annealing at 320 °C. The structure, thermal, microstructure, and surface properties of the coated film are characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM), and Thermo Gravimetric Analysis (TGA). The scratch hardness of photocatalysts at different FeO/TiO compositions is investigated based on the width measurement of scratch using FESEM analysis. Results show that at an optimum coating of 5% of FeO/TiO composition catalytic film, the maximum scratch hardness (7.984 GPa) is obtained. Also, the photocatalyst has the highest cohesive bond strength and wearing resistance. The degradation of triclosan (TCS) in treated greywater, discharged from the anaerobic-aerobic treatment system, is investigated at a lab-scale using a solar photocatalytic reactor. The response surface analysis has been performed from the different sets of experimental trials for various optimal parameters. It is observed that the TCS degradation efficiency of 83.27% has resulted under optimum conditions.
本研究提出了一种用于灰水后处理的三元复合催化剂的制备方法。采用喷雾法在玻璃管上涂覆 FeO-TiO/polyvinyl pyrrolidine (PVP) 的三元膜，并在 320°C 下退火。采用 X 射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、场发射扫描电子显微镜（FESEM）和热重分析（TGA）对涂层膜的结构、热、微观结构和表面性能进行了表征。根据 FESEM 分析的划痕宽度测量，研究了不同 FeO/TiO 组成的光催化剂的划痕硬度。结果表明，在 5%的 FeO/TiO 组成的最佳涂层催化膜中，获得了最大的划痕硬度（7.984 GPa）。此外，光催化剂具有最高的内聚结合强度和耐磨性。采用太阳能光催化反应器在实验室规模上研究了从厌氧-好氧处理系统排出的处理后灰水中三氯生（TCS）的降解情况。通过不同实验条件下的一系列响应面分析，确定了最佳参数。结果表明，在最佳条件下，TCS 的降解效率达到了 83.27%。
Zotero 插件