Non-Thermal Plasma Induced Total Mineralization of Glyphosate in Water in the Presence of Iron II Ions

Fouodjouo, Moïse; Laminsi, Samuel; Kamgang, Georges Y.; Mengue, Michele T.; Debacher, Nito Ângelo

doi:10.5935/0103-5053.20140292

Cited by 2 publications

(4 citation statements)

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“…In comparison, a study of GLP-removal from contaminated soil (initial concentration of 1.2 mmol GLP/kg soil) by plasma treatment yielded a degradation rate of more than 95% within 45 min after the application of a DBD plasma (Wang et al 2016). Also Fouodjouo et al stated a high degradation rate after the application of a gliding arc after 30 minutes of treatment time (Fouodjouo et al 2015). In the here presented study, a GLP degradation of more than 90% was achieved for an initial concentration of 5 mg GLP/L within 30 minutes.…”

Section: Electrical Conductivitymentioning

confidence: 99%

“…Fouodjouo et al postulated, that hydroxyl radicals, generated during plasma treatment, might be the main reactive agents, which degrade GLP. They further stated, that hydroxyl radicals and the recombined hydrogen peroxide (H 2 O 2 ) are most likely responsible for plasma-degraded GLP and observed by-products (Fouodjouo et al 2015). Wang et al also described that hydroxyl radicals might be the main reason for GLPdegradation during dielectric barrier discharge (DBD) plasma treatment (Wang et al 2016).…”

Section: Electrical Conductivitymentioning

confidence: 99%

“…However, this promising technique was so far not applied for the treatment of GLP in wastewaters. Conversely, Fouodjouo et al demonstrated that degradation of glyphosate dissolved in water was possible with a gliding arc plasma (Fouodjouo et al 2015). It was found that after 30 minutes, only traces of GLP could be detected by photospectrometry.…”

Section: Introductionmentioning

confidence: 99%

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Degradation of glyphosate in water by the application of surface corona discharges

Zocher

Gros

Werneburg

et al. 2021

Water Science and Technology

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Glyphosate (GLP) is one of the most widely applied herbicide, which is found ubiquitously in the environment. The removal of glyphosate from waste water and soil is challenging and can be achieved with chemical or biological methods, which, nevertheless, suffer from different disadvantages. The application of a physical plasma for the removal of GLP in water was examined by the application of surface corona discharges in a wire-to-cylinder setup filled with argon. The plasma was ignited at the liquid surface without any additives. By applying a photometric method, GLP was detected after derivatisation with fluorenyl methoxycarbonyl chloride, whereas phosphate was determined with ammonium molybdate. A GLP degradation rate of 90.8% could be achieved within a treatment time of 30 minutes with an estimated energy efficiency of 0.32 g/kWh.

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Section: Electrical Conductivitymentioning

confidence: 99%

Section: Electrical Conductivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Degradation of glyphosate in water by the application of surface corona discharges

Zocher

Gros

Werneburg

et al. 2021

Water Science and Technology

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“…The endurance of glyphosate in water is subjected to physical, chemical and microbial characteristics of the environment (Mallat and Barcelo, 1998). Glyphosate can remain active in water ranging between 7 and 100 days depending on environmental conditions such as pH, temperature, suspended matter, cation concentration, aluminum, and iron content and microbial activity (Fouodjouo et al, 2015). Further, temporal variation in environmental glyphosate concentrations can directly depend on the time of application and rain events (Hanke et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Assessing glyphosate concentrations in six reservoirs of Paraíba do Sul and Guandu River Basins in southeast Brazil

Cristofaro¹,

Branco²,

Rocha³

et al. 2021

Rev. ambiente água

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Glyphosate is a popular herbicide used worldwide, and several studies consider it to be an environmental hazard affecting human health. The present study aimed to detect glyphosate in six different reservoirs of Paraíba do Sul and Guandu River Basins in Southeast Brazil, used for multiple purposes, including fishery activities and domestic water supply. Ion chromatography was used to analyze the water samples, as it is a fast and environmentally friendly technique to detect glyphosate. Our results revealed that, despite differences related to trophic state, season of the year or distance to urban areas, glyphosate was detected in all reservoirs and in three of them with concentrations above the limit imposed by Brazilian legislation. Among the environmental variables studied, turbidity presented the highest correlation with glyphosate concentrations. The effect of rainfall increasing turbidity in the rivers reinforces the importance of draining waters from surrounding areas that transport glyphosate into the aquatic ecosystems. The detection of the herbicide in the various systems confirms the wide use of this compound in the drainage basins of the studied reservoirs and highlights the importance of water monitoring. Further, the results reveal how urgent and important it is to explore through laboratory experiments the pathways of degradation of this herbicide in tropical and subtropical aquatic environments together with its effects on flora and fauna.

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Non-Thermal Plasma Induced Total Mineralization of Glyphosate in Water in the Presence of Iron II Ions

Cited by 2 publications

References 0 publications

Degradation of glyphosate in water by the application of surface corona discharges

Degradation of glyphosate in water by the application of surface corona discharges

Assessing glyphosate concentrations in six reservoirs of Paraíba do Sul and Guandu River Basins in southeast Brazil

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