College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China.
College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, PR China.
J Environ Manage. 2022 Jun 15;312:114975. doi: 10.1016/j.jenvman.2022.114975. Epub 2022 Apr 4.
The treatment of antibiotics wastewater by electrocatalytic oxidation has attracted much attention. In the paper, a novel halloysite bimetallic (HLS-Cu-Mn) particle electrode material was prepared and a bench-scale electrocatalytic reaction tank was designed. A three-dimensional electrocatalytic oxidation reactor composed of HLS-Cu-Mn and a bench-scale electrocatalytic reaction tank was used to degrade Sulfanilamide (SA) wastewater. Characterization of the synthesized material was conducted with Scanning electron microscopy (SEM), X-ray polycrystalline powder diffractometer (XRD), X-ray photoelectron spectroscopy (XPS), and Brunauer-Emmett-Teller (BET). The electron spin resonance spectroscopy test results confirmed that HLS-Cu-Mn produced a large number of •OH. The electrochemical workstation confirmed that HLS-Cu-Mn had strong electrocatalytic activity and repolarization ability. Under the optimum preparation conditions and degradation process parameters, the removal efficiency of SA and TOC was 99.84% and 88.95% respectively. The method also has good degradation efficiency for aniline, phenol, herbicides, antibiotics, and dyeing wastewater. It was found that 4 main intermediates appeared in the degradation process by Ultra-high performance liquid chromatography/triple tandem quadrupole mass spectrometry (LC-MS). In sum, it was believed that this work provides a new vision and idea for water treatment.
电化学催化氧化处理抗生素废水引起了广泛关注。本文制备了一种新型的埃洛石双金属（HLS-Cu-Mn）颗粒电极材料，并设计了一台台式电催化反应槽。采用 HLS-Cu-Mn 三维电催化氧化反应器和台式电催化反应槽对磺胺（SA）废水进行降解。采用扫描电子显微镜（SEM）、X 射线多晶粉末衍射仪（XRD）、X 射线光电子能谱（XPS）和 Brunauer-Emmett-Teller（BET）对合成材料进行了表征。电子顺磁共振（ESR）测试结果证实 HLS-Cu-Mn 产生了大量的•OH。电化学工作站证实 HLS-Cu-Mn 具有较强的电催化活性和再极化能力。在最佳的制备条件和降解工艺参数下，SA 和 TOC 的去除率分别达到 99.84%和 88.95%。该方法对苯胺、苯酚、除草剂、抗生素和印染废水也具有良好的降解效率。通过超高效液相色谱/三重串联四极杆质谱联用（LC-MS）发现，在降解过程中出现了 4 种主要的中间产物。总之，这项工作为水处理提供了新的视角和思路。
