Hou Baolin, Deng Renjian, Ren Bozhi, Li Zhi
Hunan Provincial Key Laboratory of Shale Gas Resource Utilization, School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, China E-mail:
Water Sci Technol. 2017 Nov;76(9-10):2350-2356. doi: 10.2166/wst.2017.407.
A novel type of catalytic particle electrode (SAC-Fe) was developed from sewage sludge and iron sludge via a facile method. The catalytic particle electrodes (CPEs) were also supposed to be heterogeneous catalyst for electro-Fenton (EF). The CPEs were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR). SAC-Fe showed superior porous structure and higher adsorption capacity and catalytic activity than FeO magnetic nanoparticles. Catechol and total organic carbon (TOC) removal efficiency can reach 96.7% and 88.3% after three-dimensional (3D) EF with SAC-Fe as CPEs. A possible mechanism was deduced based on adsorption tests and radicals detection. Meanwhile, the stability and reusability of the CPEs were evaluated.
通过一种简便的方法，从污水污泥和铁污泥中制备出了一种新型催化颗粒电极（SAC-Fe）。催化颗粒电极（CPEs）也被认为是电芬顿（EF）的非均相催化剂。通过扫描电子显微镜（SEM）、X射线衍射（XRD）和傅里叶变换红外光谱（FTIR）对CPEs进行了表征。SAC-Fe表现出比FeO磁性纳米颗粒更优异的多孔结构、更高的吸附容量和催化活性。以SAC-Fe作为CPEs进行三维（3D）EF处理后，邻苯二酚和总有机碳（TOC）的去除效率分别可达96.7%和88.3%。基于吸附试验和自由基检测推导了可能的机理。同时，对CPEs的稳定性和可重复使用性进行了评估。
