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Efficient persulfate activation by photo-excited organic dyes: Mechanism and application for actual dyeing wastewater self-purification by Xue Bai; Juan Shi; Zhiyao Zhang; Min Hu; Jin Chai; Lu Xu; Xin Jin; Xuan Shi; Pengkang Jin is a Environmental Science article available to read on EtoBox.
What is Efficient persulfate activation by photo-excited organic dyes: Mechanism and application for actual dyeing wastewater self-purification about?
Sulfate Radical-Advanced Oxidation Processes are considered an efficient way for purifying dyeing wastewater, which commonly resists conventional treatment processes owing to the complex components, low biodegradability and high toxicity. However, this emerging technique is associated with issues of secondary pollution and great energy consumption during peroxymonosulfate (PMS) or persulfate (PS) activation processes. Herein, a dye pollutant/PS/visible light self-catalytic system was constructed, based on the photosensitive property of organic dyes for PS activation without catalyst and energy input. In this system, the degradation ratio of 100 mL 10 mg L -1 basic fuchsin, rhodamine B and eosin Y significantly increased by 60%, 76% and 50%, compared with the process without light irradiation. Such improvements were attributable to an efficient photo-induced electron transfer from photo-excited dyes to PS, which has the precondition that the lowest unoccupied molecular orbital (LUMO) energy level of the dye is higher than that of PS, thereby generating oxidizing species like ⋅SO 4 -, ⋅OH and 1 O 2 for pollutants degradation. Due to the high performance of pollutants simultaneous rem
Who reads Efficient persulfate activation by photo-excited organic dyes: Mechanism and application for actual dyeing wastewater self-purification?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- Xue Bai; Juan Shi; Zhiyao Zhang; Min Hu; Jin Chai; Lu Xu; Xin Jin; Xuan Shi; Pengkang Jin
- Publisher
- Elsevier BV
- Published
- 2023
- Language
- EN
- Field
- Environmental Science (Physical Sciences)