Li Qilong, Kong Hui, Jia Rongrong, Shao Jiahui, He Yiliang
School of Environmental Science and Engineering, Shanghai Jiao Tong University 800 Dongchuan Rd Shanghai 200240 China
School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University Shanghai 200030 PR China.
RSC Adv. 2019 Apr 23;9(22):12538-12546. doi: 10.1039/c9ra00158a. eCollection 2019 Apr 17.
A novel photo-Fenton catalytic system for the removal of organic pollutants was presented, including the use of photo-Fenton process and a submerged magnetic separation membrane photocatalytic reactor (SMSMPR). We synthesized TiO-FeO composites as the photocatalyst and made full use of the magnetism of the photocatalyst to realize the recollection of the catalyst from the medium, which is critical to the commercialization of photocatalytic technology for wastewater treatment. The photo-Fenton performance of TiO-FeO is evaluated with amoxicillin trihydrate (AMX) as a target pollutant. The results indicate that the TiO-FeO/HO oxidation system shows efficient degradation of AMX. FeO could not only enhance the heterogeneous Fenton degradation of organic compounds but also allow the photocatalyst to be magnetically separated from treated water. After four reaction cycles, the TiO-FeO composites still exhibit 85.2% removal efficiency of AMX and show excellent recovery properties. Accordingly, the SMSMPR with the TiO-FeO composite is a promising way for removing organic pollutants.
提出了一种用于去除有机污染物的新型光芬顿催化系统，包括光芬顿工艺和浸没式磁分离膜光催化反应器（SMSMPR）。我们合成了TiO-FeO复合材料作为光催化剂，并充分利用光催化剂的磁性实现从介质中回收催化剂，这对于光催化技术处理废水的商业化至关重要。以三水合阿莫西林（AMX）为目标污染物评估了TiO-FeO的光芬顿性能。结果表明，TiO-FeO/H₂O₂氧化体系对AMX具有高效降解效果。Fe₃O₄不仅可以增强有机化合物的非均相芬顿降解，还能使光催化剂从处理后的水中磁分离出来。经过四个反应循环后，TiO-FeO复合材料对AMX的去除效率仍为85.2%，并表现出优异的回收性能。因此，采用TiO-FeO复合材料的SMSMPR是去除有机污染物的一种有前景的方法。
