Effective degradation of atrazine in wastewater by three-dimensional electrochemical system using fly ash-red mud particle electrode: Mechanism and pathway

Teng, Xiaolei; Li, Junfeng; Wang, Jiankang; Liu, Jianchao; Ge, Xinyu; Gu, Tiantian

doi:10.1016/j.seppur.2021.118661

Cited by 45 publications

(13 citation statements)

References 80 publications

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“…2c and d ) show that O, Si, Al, Fe, and other elements are uniformly distributed on the surface of the GMS, which enhance the efficacy of fluoride removal. 42 The increased carbon content indicate that parts of the materials are carbonised during firing.…”

Section: Resultsmentioning

confidence: 99%

Goethite/montmorillonite adsorption coupled with electrocoagulation for improving fluoride removal from aqueous solutions

Kang

et al. 2022

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Goethite/montmorillonite adsorption coupled with electrocoagulation for improving fluoride removal from aqueous solutions

Kang

et al. 2022

RSC Adv.

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“…The adsorption capacity and adsorption efficiency of the fiber to Cr(VI) ions and Cu(II) ions are calculated by formulas ( 1 ), ( 2 ) and ( 3 ) respectively 22 – 24 . …”

Section: Experiments Methods and Fitted Modelsmentioning

confidence: 99%

A chitosan fiber as green material for removing Cr(VI) ions and Cu(II) ions pollutants

Zhang

Jing

2021

Sci Rep

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The application shell uses cellulose as a green and recyclable fiber material, which has great value in the field of water treatment environment. Varying factors, including pH value, dosage of CS, reaction time and original Cr(VI) ions and Cu(II) ions were studied to investigate the Cr(VI) and Cu(II) ions removal efficiency. The obtained shell trichlorocellulose has better permeability to copper ions, which is mainly due to the different oxide states of copper ions and chromium ions in a pH environment, which lead to different combinations. The price of shell cellulose neutralization is relatively low. Metal ions have better absorption properties. The kinetic and thermodynamic characteristics of the adsorption process of copper ions by chitosan yarns were discussed. The adsorption process of copper ions conformed to the quasi-second-order kinetic equation. It can be fitted by Langmuir isotherm. The adsorption of copper ions by the yarn is a spontaneous thermal reaction with both physical adsorption and chemical adsorption. Compared with chromium ions, chitosan fibers have better adsorption of copper ions, which is mainly because the amino groups in chitosan fibers can have good chelation with copper ions. SEM, FTIR, XRD were used to characterize the adsorption of copper ions by chitosan fibers, and the mechanism of the adsorption of metal ions by chitosan fibers was explored.

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“…Cl − involved in the hydrogen evolution reaction in the anode region to form Cl 2 and underwent further hydrolysis to form highly oxidized ClO − promoting the removal of Cu-EDTA (Eqs 11-13). NO 3 − and HPO 4 2− would have a competitive electronic effect with Cu-EDTA, and NO 3 − and HPO 4 2− were also able to scavenge a certain •OH, which in turn generated more reactive NO 3 •and H 2 PO 4 •leading to a decrease in Cu-EDTA removal effect (Eqs 14, 15) (Cheng et al, 2017;Teng et al, 2021)…”

Section: Coexisting Ionsmentioning

confidence: 99%

Decomplexation Performance of Cu–EDTA and Parameter Optimization by Three-Dimensional Electro-Fenton

Huang

Han³

et al. 2022

Front. Environ. Sci.

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The strong stability of Cu–ethylenediaminetetraacetic acid (Cu–EDTA) results in the low decomplexation efficiency by the traditional Fenton process. For breaking this limitation, a three-dimensional electro-Fenton (3D-EF) system was constructed to study the decomplexation of Cu–EDTA at different pH, and the effects of Fe2+ concentration, particle electrode dosage, current density, and coexisting ions on decomplexation performance were investigated. The results showed that 3D-EF exhibited high pollutant removal efficiency in a wide pH range compared with the traditional electro-Fenton process. The optimal conditions for the removal of Cu–EDTA were as follows: the pH was 7, Fe2+ was 1 mmol L−1, granular activated carbon was 2 g L−1, and current density was 10 mA cm−2, and the optimum Cu–EDTA removal efficiency reached 90.95%. In addition, the presence of Cl− slightly improved the decomplexation efficiency, whereas NO3− and HPO42− inhibited the removal of Cu–EDTA. The kinetics of Cu–EDTA decomplexation in all experimental groups followed the first-order kinetic equation.

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Effective degradation of atrazine in wastewater by three-dimensional electrochemical system using fly ash-red mud particle electrode: Mechanism and pathway

Cited by 45 publications

References 80 publications

Goethite/montmorillonite adsorption coupled with electrocoagulation for improving fluoride removal from aqueous solutions

Goethite/montmorillonite adsorption coupled with electrocoagulation for improving fluoride removal from aqueous solutions

A chitosan fiber as green material for removing Cr(VI) ions and Cu(II) ions pollutants

Decomplexation Performance of Cu–EDTA and Parameter Optimization by Three-Dimensional Electro-Fenton

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