CHENJie,ZENGHan-xuan,HUAILing-yi,et al.Peroxymonosulfate for Degradation of O-desmethylvenlafaxine Activated by Cobalt-Molybdenum Layered Double Hydroxide[J].China Water & Wastewater,2024,40(9):42-49.
Peroxymonosulfate for Degradation of O-desmethylvenlafaxine Activated by Cobalt-Molybdenum Layered Double Hydroxide
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第9期
Page:
42-49
Column:
Date of publication:
2024-05-01
- Keywords:
- layered double hydroxide; peroxymonosulfate; O-desmethylvenlafaxine; catalytic mechanism; ecotoxicity
- Abstract:
- This paper synthesized a novel cobalt-molybdenum layered double hydroxide (CoMo-LDH) heterogeneous catalyst by a simple co-precipitation method to activate peroxymonosulfate (PMS) for degrading the typical pharmacologically active compound (PhAC) O-desmethylvenlafaxine (ODV) in water, so as to solve the increasingly serious water environment pollution caused by PhAC. The physical and chemical properties of CoMo-LDH were characterized by XRD, FTIR, TEM and XPS, and the performance and mechanism of the CoMo-LDH/PMS system for degrading ODV were systematically investigated. When the dosages of PMS and CoMo-LDH were 0.1 mmol/L and 0.05 g/L, respectively, the catalytic system could completely remove 2 mg/L ODV within 15 min. The catalytic mechanism showed that the main active species in the system was sulfate radical (SO4-·). The Co-Mo redox cycle not only promoted the efficiency of catalyst for activating PMS, but also improved the regeneration and reuse performance of the catalyst. In addition, the toxicity change of ODV predicted by ecotoxicity calculation software showed that the CoMo-LDH/PMS system could effectively inhibit the ecotoxicity of ODV.
Last Update:
2024-05-01