LI Jing,WU Qin,ZHANG Zi,et al.Persulfate Activated by Ce-doped Iron-based Catalyst for Degradation of Rhodamine B[J].China Water & Wastewater,2021,37(15 15):95-101.
Persulfate Activated by Ce-doped Iron-based Catalyst for Degradation of Rhodamine B
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
15 15
Page:
95-101
Column:
Date of publication:
2021-08-01
- Keywords:
- Ce-Fe catalyst; persulfate; rhodamine B; sulfate radical
- Abstract:
- Dyeing wastewater is a typical refractory wastewater.To solve this problem, persulfate (PDS) activated by Ce-doped iron-based (Ce-Fe) catalyst was used to degrade rhodamine B (RhB). The Ce-Fe composite catalytic material was prepared by high-temperature calcination after co-precipitation, and its morphology and physical properties were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Effects of the cerium doping amount, PDS dosage, catalyst dosage and pH value on the degradation performance of RhB were investigated, and the re-use performance of Ce-Fe catalyst was also discussed. The Ce-Fe catalyst could effectively activate PDS to degrade RhB. When PDS dosage was 1.0 g/L, Ce-Fe catalyst dosage was 1.0 g/L, cerium/iron doping ratio was 1/25 and solution pH value was 7, the degradation efficiency of RhB reached 88.9% after reaction for 45 min. Free radical identification experiments indicated that the main active species in the system was SO4-·. Regeneration experiments proved that the composite material could be used repeatedly and had favorable stability in general.
Last Update:
2021-08-01