DOI: 10.1016/j.watres.2018.12.038
Scopus记录号: 2-s2.0-85059514410
论文题名: Advanced oxidation and adsorptive bubble separation of dyes using MnO 2 -coated Fe 3 O 4 nanocomposite
作者: Kang Y.-G. ; Yoon H. ; Lee C.-S. ; Kim E.-J. ; Chang Y.-S.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 413
结束页码: 422
语种: 英语
英文关键词: Adsorptive bubble separation
; Advanced oxidation processes
; Dye
; Fe 3 O 4 @MnO 2 nanocomposite
; Hydrogen peroxide
Scopus关键词: Aromatic compounds
; Catalysts
; Cationic surfactants
; Chlorine compounds
; Dyeing
; Dyes
; Efficiency
; Hydrogen peroxide
; Iron oxides
; Magnetite
; Manganese oxide
; Nanocomposites
; Oxidation
; Paramagnetic resonance
; Separation
; Stripping (dyes)
; Sulfur compounds
; X ray photoelectron spectroscopy
; Advanced oxidation
; Advanced Oxidation Processes
; Bubble separation
; Cetyltrimethylammonium chloride
; Industrial wastewaters
; Methylene Blue
; Radical species
; Removal efficiencies
; Sodium dodecyl sulfate
; anionic surfactant
; cationic surfactant
; cetrimonium chloride
; dodecyl sulfate sodium
; hydrogen peroxide
; manganese dioxide
; methylene blue
; nanocomposite
; river water
; ultrasmall superparamagnetic iron oxide
; adsorption
; bubble
; coating
; dye
; efficiency measurement
; hydrogen peroxide
; iron oxide
; manganese oxide
; nanocomposite
; oxidation
; pollutant removal
; separation
; surfactant
; adsorption
; aqueous solution
; Article
; catalyst
; controlled study
; decolorization
; decomposition
; electron spin resonance
; electron transport
; magnetic separation
; oxidation
; pH
; priority journal
; reaction analysis
; scale up
; waste component removal
; waste water management
英文摘要: In this study, MnO 2 -coated Fe 3 O 4 nanocomposite (Fe 3 O 4 @MnO 2 ) was utilized to decompose H 2 O 2 to remove dyes via advanced oxidation processes and adsorptive bubble separation (advanced ABS system). The combination of H 2 O 2 and Fe 3 O 4 @MnO 2 generated bubbles and formed a stable foam layer in the presence of a surfactant; sodium dodecyl sulfate (SDS) or cetyltrimethylammonium chloride (CTAC), separating dye from the solution. On the basis of radical quenching experiments, electron paramagnetic resonance and X-ray photoelectron spectroscopy analyses, it was confirmed that the MnO 2 shell of catalyst was reduced to Mn 2 O 3 by H 2 O 2 , generating radicals and oxygen gas for the removal of dyes. In the advanced ABS system, ∙OH and 1 O 2 were the main radical species and the O 2 concentrations of 0.34 and 0.71 mM were increased in the solution and headspace, respectively. The advanced ABS system demonstrated a high removal efficiency of methylene blue (MB) (99.0%) and the removal rate increased with increasing amounts of components (H 2 O 2 , catalyst and SDS). Also, the advanced ABS system maintained high removal efficiency of MB at a wide pH range of 3–9. In addition to the anionic surfactant of SDS, CTAC was applied as a cationic surfactant for the advanced ABS of anionic dyes. Lastly, the scale-up system was applied to remediate dye-contaminated river water and industrial wastewater for possible practical applications. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122038
Appears in Collections: 气候变化事实与影响
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作者单位: Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea; Center for Water Resource Cycle Research, Korea Institute of Science and Technology (KIST), Seoul, 02792, South Korea
Recommended Citation:
Kang Y.-G.,Yoon H.,Lee C.-S.,et al. Advanced oxidation and adsorptive bubble separation of dyes using MnO 2 -coated Fe 3 O 4 nanocomposite[J]. Water Research,2019-01-01