Rapid decomposition of diclofenac in a magnetic field enhanced zero-valent iron/EDTA Fenton-like system

Zhou, Tao; Feng, Kai; Xiang, Wei; Lv, Yiliang; Wu, Xiaohui; Mao, Juan; He, Chang

doi:10.1016/j.chemosphere.2017.11.090

Cited by 43 publications

(8 citation statements)

References 44 publications

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Section: Effect Of Ph On Zvi Performancementioning

confidence: 99%

“…Zhou et al have applied magnetic field (MF) as well as ZVI/EDTA for the removal of diclofenac from wastewater [96]. They reported that acidic conditions were more favorable to contaminant removal, but the MF/ZVI/EDTA system could effectively decompose diclofenac in the pH range of 4 to 7 [96]. Different studies have shown that application of magnetic field together with EDTA could accelerate pitting corrosion on the disclosed fresh Fe 0 sites, in neutral or even alkaline systems [96,97].…”

Section: Effect Of Ph On Zvi Performancementioning

confidence: 99%

“…They reported that acidic conditions were more favorable to contaminant removal, but the MF/ZVI/EDTA system could effectively decompose diclofenac in the pH range of 4 to 7 [96]. Different studies have shown that application of magnetic field together with EDTA could accelerate pitting corrosion on the disclosed fresh Fe 0 sites, in neutral or even alkaline systems [96,97]. The mechanism of contaminant removal by ZVI/EDTA at acidic pH involves the formation of complexes between EDTA and Fe ions (Equation (8)), together with the reaction of the Fe II EDTA complex with soluble oxygen (Equation (9)) to yield O 2 ●− .…”

Section: Effect Of Ph On Zvi Performancementioning

confidence: 99%

“…Zhou and colleagues have proposed that the magnetic field does not change the mechanism of diclofenac removal by ZVI/EDTA, but that it enhances iron corrosion in a broad pH range (4 to 7) [96]. Pan et al have studied the degradation of orange G by using ZVI/H 2 O 2 at different pH values (3–9) in a salty wastewater [98].…”

Section: Effect Of Ph On Zvi Performancementioning

confidence: 99%

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Effect of pH on Zero Valent Iron Performance in Heterogeneous Fenton and Fenton-Like Processes: A Review

2018

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Heterogeneous Fenton processes with solid catalysts have gained much attention for water and wastewater treatment in recent years. In the field of solid catalysts, zero valent iron (ZVI) is among the most applicable due to its stability, activity, pollutant degradation properties and environmental friendliness. The main limitation in the use of ZVI in heterogeneous Fenton systems is due to its deactivation in neutral and alkaline conditions, and Fenton-like processes have been developed to overcome this difficulty. In this review, the effect of solution pH on the ZVI-Fenton performance is discussed. In addition, the pH trend of ZVI efficiency towards contaminants removal is also considered in oxic solutions (i.e., in the presence of dissolved O2 but without H2O2), as well as in magnetic-field assisted Fenton, sono-Fenton, photo-Fenton and microwave-Fenton processes at different pH values. The comparison of the effect of pH on ZVI performance, taking into account both heterogeneous Fenton and different Fenton-like processes, can guide future studies for developing ZVI applications in water and wastewater treatment.

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Section: Effect Of Ph On Zvi Performancementioning

confidence: 99%

Section: Effect Of Ph On Zvi Performancementioning

confidence: 99%

Section: Effect Of Ph On Zvi Performancementioning

confidence: 99%

Section: Effect Of Ph On Zvi Performancementioning

confidence: 99%

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Effect of pH on Zero Valent Iron Performance in Heterogeneous Fenton and Fenton-Like Processes: A Review

2018

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“…As an effective dechlorination reducing agent, nZVI has been widely applied for chlorinated organics removing. Zhou et al [32] have proved that dechlorination is one of the pathways for nZVI to remove DCF. Ghauch et al [33] used commercial iron powders for DCF removal, and dechlorination was also obtained.…”

Section: Effect Of Nzvi and H 2 O 2 Concentrationmentioning

confidence: 99%

Zero-Valent Iron Nanoparticles and Its Combined Process for Diclofenac Degradation under Various Experimental Conditions

Liang¹,

Zhou²,

Chao-meng³

et al. 2021

Pol. J. Environ. Stud.

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The use of nanoscale zero-valent iron (nZVI) for the purification of contaminated water and soil was investigated for its high potential to remove subsurface contaminants. In this study, the mechanism of diclofenac (DCF) degradation by nZVI and the combined process of nZVI and hydrogen peroxide (H 2 O 2) are discussed. The results demonstrated that nZVI with acidic conditions had a certain degradation efficiency on DCF, with a removal rate about 30% in a 2-hour reaction at pH 5. The combined process of nZVI and H 2 O 2 could obviously remove DCF, with a removal rate greater than 90% in a 2-hour reaction at pH 5. In nZVI system, under acidic and aerobic conditions, Fe 2+ and H 2 O 2 can be generated to form a Fenton-like system. Meanwhile, the release of electrons from nZVI could promote the reductive dechlorination of DCF. In nZVI/H 2 O 2 system, the high removal rate of TOC was also showed the DCF mineralization by the Fenton-like oxidation.

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Hypercrosslinked poly(AN-co-EGDMA-co-VBC): synthesis via suspension polymerization, characterizations, and potential to adsorb diclofenac and metformin from aqueous solution

et al. 2020

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Rapid decomposition of diclofenac in a magnetic field enhanced zero-valent iron/EDTA Fenton-like system

Cited by 43 publications

References 44 publications

Effect of pH on Zero Valent Iron Performance in Heterogeneous Fenton and Fenton-Like Processes: A Review

Effect of pH on Zero Valent Iron Performance in Heterogeneous Fenton and Fenton-Like Processes: A Review

Zero-Valent Iron Nanoparticles and Its Combined Process for Diclofenac Degradation under Various Experimental Conditions

Hypercrosslinked poly(AN-co-EGDMA-co-VBC): synthesis via suspension polymerization, characterizations, and potential to adsorb diclofenac and metformin from aqueous solution

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