PDF
Full
Outline
In response to the current limitations of the Fe2+/periodate（PI）system, which is difficult to sustain effective performance and is merely applicable under acidic conditions, a system of visible light（VL）and 3,4,5-Trihydroxybenzoic acid（TA）cooperating with Fe3+ for activating PI was constructed. The results indicate that the combination of VL and TA can accelerate the redox cycling between Fe3+/Fe2+, significantly enhancing the performance of activating PI. The VL/TA/Fe3+/PI system can achieve the complete degradation of sulfadiazine（SD）within 30min, with better efficacy under neutral and acidic conditions. Anions such as Cl−, NO3−, and SO42− have minimal effects on SD removal, whereas the existence of HCO3− significantly inhibits SD elimination. At the same time, humic acid（HA）exhibits a promoting effect. Quenching tests and electron paramagnetic resonance（EPR）analysis confirmed that hydroxyl radicals（HO•）and singlet oxygen（1O2）were the primary reactive species responsible for SD removal. Based on mass spectrometry analysis, 6degradation intermediates were verified, and 3 possible degradation pathways for SD were proposed. Using radish as a model organism for phytotoxicity assessment, it was demonstrated that the toxicity of SD-contaminated water was significantly reduced after treatment. Simultaneously, the system exhibited excellent treatment efficiency in various real water matrices. Furthermore, this system exhibits favourable degradation performance for multiple typical emerging contaminants prevalently existing in natural water bodies, indicating broad application prospects.
PDF
44
20
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62199257
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
