The main objective of this research is to use the photocatalytic properties of PES/TiO₂ nanofibers membranes to remove the phenol as a toxic pollutant in various effluents. The uniform fibers in terms of minimum bead formation and fibers diameter were fabricated. Therefore, more TiO₂ catalysts are on the surface of the fibers which increase the active surface area of nanoparticles and consequently improve the phenol degradation efficiency. The effects of TiO₂ concentration on hydrophilicity, mechanical properties, porosity, mean pore size, and water flux of membranes were studied. The PES/TiO₂ nanofibers were evaluated for phenol degradation under UVA irradiation through a transparent membrane module. The amount of removable phenol was analyzed with high‐performance liquid chromatography. Central composite design was used as a statistical experimental design. Finally, the effect of TiO₂ content in nanofibers and initial phenol concentrations were investigated as well as pH values in synthetic wastewater, on phenol degradation. The results from analysis of variance (ANOVA) analysis indicated that TiO₂ content in nanofibers was the most important and effective parameter on phenol degradation. It was also presented that there is no significant interaction between parameters so that the effect of each parameter was investigated separately. Maximum phenol degradation was 43.0 ± 0.3% and found under conditions of TiO₂ content, initial phenol concentration, and pH value of 8%, 120 ppm, and 7, respectively.

中文翻译：

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电纺聚醚砜/二氧化钛（PES / TiO2）复合纳米纤维膜的制备及其在水中光催化降解苯酚中的应用

这项研究的主要目的是利用PES / TiO ₂纳米纤维膜的光催化性能，去除各种废水中的苯酚作为有毒污染物。就最小的珠粒形成和纤维直径而言，制造了均匀的纤维。因此，更多的TiO ₂催化剂在纤维表面上，这增加了纳米颗粒的活性表面积并因此提高了苯酚的降解效率。研究了TiO ₂浓度对膜的亲水性，机械性能，孔隙率，平均孔径和水通量的影响。PES / TiO ₂通过透明膜组件在UVA辐射下评估纳米纤维的苯酚降解。高效液相色谱法分析了可去除苯酚的量。中央复合设计被用作统计实验设计。最后，研究了纳米纤维中TiO ₂含量和初始苯酚浓度以及合成废水中的pH值对苯酚降解的影响。方差分析（ANOVA）分析的结果表明，TiO ₂纳米纤维中的含量是影响苯酚降解的最重要和最有效的参数。还提出，参数之间没有显着的相互作用，因此分别研究了每个参数的效果。在TiO ₂含量，初始苯酚浓度和pH值分别为8％，120 ppm和7的条件下发现最大苯酚降解率为43.0±0.3％。