Removal of the herbicide monolinuron from waters by the electro-Fenton treatment

Diaw, Pape Abdoulaye; Oturan, Nihal; Seye, Mame Diabou Gaye; Mbaye, O.M.A.; Mbaye, Mame Samba; Coly, Atanasse; Aaron, Jean‐Jacques

doi:10.1016/j.jelechem.2020.114087

Cited by 26 publications

(4 citation statements)

References 48 publications

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“…This pattern is consistent with the macro-level explorations of chemical, electrochemical, photochemical, and photoelectrochemical technologies designed to remove organic pollutants from wastewaters [18]. The growing demand for the treatment of effluents that contain complex and recalcitrant pollutants is driving the use of the Fenton method [19]. Furthermore, the Fenton process is a versatile technique that can be combined with other technologies, as highlighted by Ramos et al (2021) [20], who described the use of Fenton in a systematic review on textile dye treatment.…”

Section: Time Trends In Studies Using Fentonsupporting

confidence: 70%

Fenton: A Systematic Review of Its Application in Wastewater Treatment

Pimentel Prates,

de Oliveira Loures Marcionílio,

Borges Machado

et al. 2023

Processes

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The use of new technologies for the removal of pollutants from wastewater has become globally necessary due to the complexity and facilities defined by conventional treatments. Advanced oxidative processes, specifically the Fenton process, have become widely applied given their low cost and ease of use. Therefore, this study aimed to evaluate the progression of the scientific publications on the implementation of Fenton process, investigating their space–time evolution. Additionally, useful solutions, trends, and gaps in the applications for the removal of pollutants with this methodology were identified, and also different remediation strategies and the design of new treatments for wastewaters were identified within this scientometric analysis. Bibliometric research was conducted in two scientific databases, Web of Science and Scopus, from 2011 to 2022, and we identified 932 and 1263 studies with the word “Fenton,” respectively. When these publications are associated with the treatment of alternative effluents, an increase in publications from 2011 (r = 0.95, p < 0.001) and 2013 (r = 0.93, p < 0.001) was observed when analyzing both databases, indicating the relevance of the theme. Among these studies, several of them were conducted on the bench scale (89.8% and 98.3%, Web of Science and Scopus, respectively) and in aqueous matrix (97.8% and 98.4%, Web of Science and Scopus, respectively), with being China the main country with publications associated with these words (28.33% and 41.9%), while Brazil is related to 3.65% and 2.29% of the total studies in Web of Science and Scopus, respectively. In addition, this review provides a guideline for new applications for different species in the matrices and describes the evolution of technological solutions to meet Sustainable Development Goal 6: clean water and sanitation.

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Section: Time Trends In Studies Using Fentonsupporting

confidence: 70%

Fenton: A Systematic Review of Its Application in Wastewater Treatment

Pimentel Prates,

de Oliveira Loures Marcionílio,

Borges Machado

et al. 2023

Processes

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“…1,6 Thus, pesticide degradation can also take place by photochemistry, [7][8][9] as well as by electrodecomposition and thermal decomposition. [10][11][12] It is worthwhile to point out that, in some cases, the pesticide degradation products are more toxic than the native substances 13 and that pesticide molecules can be degraded relatively rapidly in plants and soils according to the types of treatments and agronomic practices. 14,15 Synthetic pyrethroids are like the natural pyrethrins and were widely used in agriculture and as household insecticides.…”

Section: Introductionmentioning

confidence: 99%

Photodegradation study of the fenvalerate insecticide by 1H NMR, 13C NMR, and GC-MS and structural elucidation of its transformation products

Thiaré

Diaw

Mbaye

et al. 2022

Maced. J. Chem. Chem. Eng.

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The photolysis of fenvalerate, a pyrethroid insecticide, was studied in acetonitrile by 1H nuclear magnetic resonance (NMR) and 13C NMR to identify the site of bond cleavage and gas chromatography-mass spectrometry (GC-MS) to establish the chemical structure of fenvalerate photoproducts. Ultraviolet (UV) irradiation of fenvalerate solutions was performed for 18 h with a solar light simulator, and the photolysis reaction obeyed first-order kinetics. Photolysis half-life time (t1/2) values ranged between 15.25 and 21.63 h (mean photodegradation percentage = 51.7 %) for 1H NMR and between 4.55 and 8.06 h (mean photodegradation percentage > 80 %) for 13C NMR. We observed five sites of bond cleavage, namely carbonyl-tertiary carbon, tertiary carbon-tertiary carbon, carbonyl-oxygen, carboxyl-tertiary carbon, and aromatic carbon-tertiary carbon, yielding photoproducts formation. GC-MS was associated with 1H NMR and 13C NMR to obtain a complete photodegradation mechanism. Before UV irradiation, two chromatogram peaks were obtained, due to the two fenvalerate isomers. Under irradiation, both peaks decreased, and new peaks appeared, corresponding to photoproduct formation. After a 12- to 13-h irradiation, 99.39 % of fenvalerate was degraded with a mean rate constant of 0.305 h–1. The chemical structure of the formed photoproducts was identified, either by using the National Institute of Standards and Technology (NIST) mass spectral database or by interpreting the mass spectra. Finally, a detailed mechanism was proposed for fenvalerate photodegradation.

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“…Silva et al [ 8 ] achieved complete oxidation of the insecticide imidacloprid, at a concentration of approximately 25 mg L −1 , by applying an anodic oxidation (AO) process with mixed metal oxide anodes. Successful degradation of the herbicides monolinuron, paraquat, and clopyralid and of the pesticide profenofos, at concentrations ranging 10–100 mg L −1 , by electro-Fenton (EF), was also reported [ 2 , 9 , 10 , 11 ]. In fact, EF is a promising treatment process that promotes the electrooxidation of organic compounds through hydroxyl radicals produced in the Fenton reaction (Equation (1)), and, according to the literature, can present higher treatment efficiencies and mineralization indexes than AO [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

Methiocarb Degradation by Electro-Fenton: Ecotoxicological Evaluation

et al. 2020

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This paper studies the degradation of methiocarb, a highly hazardous pesticide found in waters and wastewaters, through an electro-Fenton process, using a boron-doped diamond anode and a carbon felt cathode; and evaluates its potential to reduce toxicity towards the model organism Daphnia magna. The influence of applied current density and type and concentration of added iron source, Fe2(SO4)3·5H2O or FeCl3·6H2O, is assessed in the degradation experiments of methiocarb aqueous solutions. The experimental results show that electro-Fenton can be successfully used to degrade methiocarb and to reduce its high toxicity towards D. magna. Total methiocarb removal is achieved at the applied electric charge of 90 C, and a 450× reduction in the acute toxicity towards D. magna, on average, from approximately 900 toxic units to 2 toxic units, is observed at the end of the experiments. No significant differences are found between the two iron sources studied. At the lowest applied anodic current density, 12.5 A m−2, an increase in iron concentration led to lower methiocarb removal rates, but the opposite is found at the highest applied current densities. The highest organic carbon removal is obtained at the lowest applied current density and added iron concentration.

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Removal of the herbicide monolinuron from waters by the electro-Fenton treatment

Cited by 26 publications

References 48 publications

Fenton: A Systematic Review of Its Application in Wastewater Treatment

Fenton: A Systematic Review of Its Application in Wastewater Treatment

Photodegradation study of the fenvalerate insecticide by 1H NMR, 13C NMR, and GC-MS and structural elucidation of its transformation products

Methiocarb Degradation by Electro-Fenton: Ecotoxicological Evaluation

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