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Cold plasma turns mixed-dye-contaminated wastewater bio-safe.
Liu, Qi; Zhu, Jiwen; Ouyang, Wenchong; Ding, Chengbiao; Wu, Zhengwei; Ostrikov, Kostya Ken.
Afiliación
  • Liu Q; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, People's Republic of China.
  • Zhu J; Institute of Advanced Technology, University of Science and Technology of China, Hefei, People's Republic of China.
  • Ouyang W; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, People's Republic of China.
  • Ding C; Department of Rehabilitation Medicine, The Second Affiliated Hospital of Anhui Medical University, Hefei, People's Republic of China.
  • Wu Z; School of Nuclear Science and Technology, University of Science and Technology of China, Hefei, People's Republic of China; Institute of Advanced Technology, University of Science and Technology of China, Hefei, People's Republic of China. Electronic address: wuzw@ustc.edu.cn.
  • Ostrikov KK; School of Chemistry and Physics, Queensland University of Technology (QUT), Brisbane, Queensland 4000, Australia; Centre for Materials Science, Centre for Clean Energy Technologies and Practices, and Centre for Waste Free World, Queensland University of Technology (QUT), Brisbane, Queensland 4000, A
Environ Res ; 246: 118125, 2024 Apr 01.
Article en En | MEDLINE | ID: mdl-38199474
ABSTRACT
The excessive and uncontrollable discharge of diverse organic pollutants into the environment has emerged as a significant concern, presenting a substantial risk to human health. Among the advanced oxidation processes used for the purification of wastewater, cold plasma technology is superior in fast and effective decontamination but often fails facing mixed pollutants. To address these issues, here we develop the new conceptual approach, plasma process, and proprietary reactor that ensure, for the first time, that the efficiency of treatment (114.7%) of two mixed organic dyes, methylene blue (MB) and methyl orange (MO), is higher than when the two dyes are treated separately. We further reveal the underlying mechanisms for the energy-efficient complete degradation of the mixed dyes. The contribution of plasma-induced ROS and the distinct degradation characteristics and mechanism of pollutants in mixed treatment are discussed. The electron transfer pathway revealed for the first time suggest that the mixed pollutants reduce the overall redox potentials and facilitate electron transfer during the plasma treatment, promoting synergistic degradation effects. The integrated frameworks including both direct and indirect mechanisms provide new insights into the high-efficiency mixed-contaminant treatment. The degradation products for mixed degradation are revealed based on the identification of intermediate species. The plasma-treated water is proven safe for living creatures in waterways and sustainable fishery applications, using in vivo zebrafish model bio-toxicity assay. Overall, these findings offer a feasible approach and new insights into the mechanisms for the development of highly-effective, energy-efficient technologies for wastewater treatment and reuse in agriculture, industry, and potentially in urban water networks.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Contaminantes Ambientales / Gases em Plasma Tipo de estudio: Prognostic_studies Límite: Animals / Humans Idioma: En Revista: Environ Res Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
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PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Contaminantes Ambientales / Gases em Plasma Tipo de estudio: Prognostic_studies Límite: Animals / Humans Idioma: En Revista: Environ Res Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos