Degradation of azo dye Orange G in aqueous solutions by persulfate with ferrous ion

Xu, Xiangrong; Li, Xiang-zhong

doi:10.1016/j.seppur.2010.01.012

Cited by 418 publications

(129 citation statements)

References 47 publications

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“…/PMS at neutral pH mineralized almost 90 % of the initial organic loading. Xu and Li (2010) also demonstrated that the Fe 2? /PS system could degrade azo dye orange G in aqueous solutions to a higher degree than the Fenton's reagent, which was beneficial to the mineralization of azo dyes.…”

Section: Effect Of Initial Phmentioning

confidence: 89%

Zero-valent iron/persulfate(Fe0/PS) oxidation acetaminophen in water

Deng

Shao

Gao

et al. 2013

Int. J. Environ. Sci. Technol.

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Section: Effect Of Initial Phmentioning

confidence: 89%

Zero-valent iron/persulfate(Fe0/PS) oxidation acetaminophen in water

Deng

Shao

Gao

et al. 2013

Int. J. Environ. Sci. Technol.

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“…Furthermore, the addition of CS (1.2 g L −1 ) resulted in a sixtimes increase in degradation rate constants of COD and NH3. Xu et al have reported that by increasing the activator concentration (Fe 2+ ) from 1 to 4 mM, the degradation rate constant of Orange G increased from 0.04 to 0.12 min −1 [42]. …”

Section: Effect Of Reaction Time and Kinetic Studymentioning

confidence: 99%

Activation of Persulfate Using an Industrial Iron-Rich Sludge as an Efficient Nanocatalyst for Landfill Leachate Treatment

et al. 2018

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In this research, the performance of nanomaterials obtained from the converter sludge (CS) of Esfahan Steel Company, Iran was investigated for the activation of persulfate (PS). The experiments were conducted on real and synthetic leachates. CS showed high catalytic activity for removal of chemical oxygen demand COD and NH 3 because of its high iron oxide content. The effects of pH, CS dosage, and PS/COD ratio, temperature, and reaction time on the removal of COD and NH 3 were evaluated to optimize operational conditions (pH 2, CS dosage: 1.2 g L −1 , PS/COD: 4, and reaction time: 60 min). Maximum COD and NH 3 removal efficiencies were 73.56 and 63.87%, respectively. Finally, the optimized process was applied for treatment of a real leachate sample. Although the treated leachate was not suitable to discharge into the environment, an increase in the 5-day biochemical oxygen demand (BOD 5 ) and biodegradability (BOD 5 /COD) of leachate after treatment indicated that the effluent can be biologically treated. As a consequence, it can be combined with sewage or can be returned to the landfill.

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“…Under acidic conditions, most iron ions existing in the process of electropersulfate are twovalent that result in a significant increase in efficiency by raising two-valent iron to three-valent iron ratio. Furthermore, at pH values above 4, solubility of ferric ions in solution decreased and these ions changed to colloidal form leading to a decrease in efficiency based on reaction 7 (Masomboon et al, 2010;Xu and Li, 2010). …”

Section: Effect Of Initial Phmentioning

confidence: 99%

Decomposition of sodium dodecylbenzene sulfonate surfactant by Electro/Fe2+-activated Persulfate process from aqueous solutions

Samarghandi¹,

Mehralipour²,

Azarian³

et al. 2017

Global NEST Journal

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The decomposition of sodium dodecylbenzene sulfonate (SDBS), which is a dangerous and anionic surfactant, was investigated by the electro/Fe 2+ /persulfate process from aqueous solutions. The activation of persulfate anion and production of active radicals were performed by means of heat, UV and iron ions (released from iron electrodes). The findings illustrated that the pH value of the solution, initial concentration of persulfate anion, the amount of input voltage and iron dosage were entirely effective in SDBS removal. Nearly 100% of SDBS was removed under the optimum conditions: pH 3, voltage 10 V, anion persulfate concentration 25 mM l -1 , iron ion dosage 0.25 g l -1 and reaction time 25 min. Furthermore, the application of the persulfate anion process in concert with the electrochemical process, in order to generate electrical iron and persulfate activation, had a better performance compared to separate methods.

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Degradation of azo dye Orange G in aqueous solutions by persulfate with ferrous ion

Abstract: 22This is the Pre-Published Version.

Cited by 418 publications

References 47 publications

Zero-valent iron/persulfate(Fe0/PS) oxidation acetaminophen in water

Zero-valent iron/persulfate(Fe0/PS) oxidation acetaminophen in water

Activation of Persulfate Using an Industrial Iron-Rich Sludge as an Efficient Nanocatalyst for Landfill Leachate Treatment

Decomposition of sodium dodecylbenzene sulfonate surfactant by Electro/Fe2+-activated Persulfate process from aqueous solutions

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