{"title":"Stable and effective photo-Fenton catalysts of Fe-alginate/PVDF composite electrospun nanofibers for the removal of methylene blue","authors":"Qian Feng, Jia Liu, Zhigang Liu, Yuhong Zhou, Yuze Zhou, Zhihui Dong, Dongyan Tang","doi":"10.1007/s13762-024-05903-2","DOIUrl":null,"url":null,"abstract":"<p>Wastewater containing organic pollutants has created serious environmental issues and severely threatened human health due to the industry’s rapid development. Fenton processes, among the most economical advanced oxidation methods, can efficiently decompose and completely mineralize organic pollutants. Fenton processes have been widely employed in wastewater treatment to remove organic dyes; however, their practical application is limited due to the secondary pollution of Fe sludge. This work used the electrospinning technique to create Fe-alginate/PVDF nanofibers with a mass ration of 1:0.3, followed by iron ion exchange (0.08 wt%) as a photo-Fenton catalyst. The catalytic degradation of 20 mg/L methylene blue revealed that Fe-alginate/PVDF nanofibers (10 mg) had remarkable photo-Fenton catalytic performance, degrading 97.24% of methylene blue within 40 min under optimized conditions (pH of 3, H<sub>2</sub>O<sub>2</sub> concentration of 0.20 mM). Additionally, the wetting property and the development of the Fe-alginate coordination structure prevented iron leaching and strengthened the Fe-alginate/PVDF nanofibers’ structure stability, thus limiting secondary pollution of wastewater during application. Moreover, Fe-alginate/PVDF nanofibers could effectively remove MB over a wide pH range of 3.0–9.0, applied to the majority industrial wastewater (neutral or slightly acidic pH conditions). This work provides a facile strategy to prepare stable and cost-effective heterogeneous photo-Fenton catalysts, demonstrating potential applications in industrial-scale wastewater treatment.</p>","PeriodicalId":589,"journal":{"name":"International Journal of Environmental Science and Technology","volume":null,"pages":null},"PeriodicalIF":3.0000,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Environmental Science and Technology","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1007/s13762-024-05903-2","RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Wastewater containing organic pollutants has created serious environmental issues and severely threatened human health due to the industry’s rapid development. Fenton processes, among the most economical advanced oxidation methods, can efficiently decompose and completely mineralize organic pollutants. Fenton processes have been widely employed in wastewater treatment to remove organic dyes; however, their practical application is limited due to the secondary pollution of Fe sludge. This work used the electrospinning technique to create Fe-alginate/PVDF nanofibers with a mass ration of 1:0.3, followed by iron ion exchange (0.08 wt%) as a photo-Fenton catalyst. The catalytic degradation of 20 mg/L methylene blue revealed that Fe-alginate/PVDF nanofibers (10 mg) had remarkable photo-Fenton catalytic performance, degrading 97.24% of methylene blue within 40 min under optimized conditions (pH of 3, H2O2 concentration of 0.20 mM). Additionally, the wetting property and the development of the Fe-alginate coordination structure prevented iron leaching and strengthened the Fe-alginate/PVDF nanofibers’ structure stability, thus limiting secondary pollution of wastewater during application. Moreover, Fe-alginate/PVDF nanofibers could effectively remove MB over a wide pH range of 3.0–9.0, applied to the majority industrial wastewater (neutral or slightly acidic pH conditions). This work provides a facile strategy to prepare stable and cost-effective heterogeneous photo-Fenton catalysts, demonstrating potential applications in industrial-scale wastewater treatment.
期刊介绍:
International Journal of Environmental Science and Technology (IJEST) is an international scholarly refereed research journal which aims to promote the theory and practice of environmental science and technology, innovation, engineering and management.
A broad outline of the journal''s scope includes: peer reviewed original research articles, case and technical reports, reviews and analyses papers, short communications and notes to the editor, in interdisciplinary information on the practice and status of research in environmental science and technology, both natural and man made.
The main aspects of research areas include, but are not exclusive to; environmental chemistry and biology, environments pollution control and abatement technology, transport and fate of pollutants in the environment, concentrations and dispersion of wastes in air, water, and soil, point and non-point sources pollution, heavy metals and organic compounds in the environment, atmospheric pollutants and trace gases, solid and hazardous waste management; soil biodegradation and bioremediation of contaminated sites; environmental impact assessment, industrial ecology, ecological and human risk assessment; improved energy management and auditing efficiency and environmental standards and criteria.