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首页> 外文期刊>Journal of Environmental Management >Polymer-based immobilized Fe_2O_3-TiO_2/PVP catalyst preparation method and the degradation of triclosan in treated greywater effluent by solar photocatalysis
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Polymer-based immobilized Fe_2O_3-TiO_2/PVP catalyst preparation method and the degradation of triclosan in treated greywater effluent by solar photocatalysis

机译：基于聚合物的固定化Fe_2O_3-TiO_2 / PVP催化剂制备方法和太阳能光催化处理过的灰水流液中三氯烷的降解

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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 Fe_2O_3-TiO_2/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 Spec-troscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM), and Thermo Gravimetric Analysis (TGA). The scratch hardness of photocatalysts at different Fe_2O_3/TiO_2 compositions is investigated based on the width measurement of scratch using FESEM analysis. Results show that at an optimum coating of 5% of Fe_2O_3/ TiO_2 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.
机译：本研究涉及一种新型方案，用于开发三元复合催化剂，用于灰水的有效处理技术。使用喷涂在320℃下的喷涂涂层涂覆在玻璃管上的Fe_2O_3-TiO_2 /聚乙烯吡咯烷（PVP）的三元膜。涂覆膜的结构，热，微观结构和表面性质的特征在于X射线衍射（XRD），傅里叶变换红外规格 - 镜（FTIR），场发射扫描电子显微镜（FESEM）和热重分析（TGA） ）。基于使用FESEM分析的划痕的宽度测量，研究了不同Fe_2O_3 / TiO_2组合物的光催化剂的划痕硬度。结果表明，在5％的Fe_2O_3 / TiO_2组合物催化膜的最佳涂层中，获得最大划痕硬度（7.984GPa）。此外，光催化剂具有最高的粘结强度和耐磨性。使用太阳光催化反应器在实验室规模中研究了从厌氧治疗系统排出的经处理的灰水处理的三胞嘧啶（TCS）的降解。响应表面分析已从不同的实验试验组中进行，用于各种最佳参数。观察到，在最佳条件下，TCS降解效率为83.27％。

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