Persistence of oxyfluorfen in soil, runoff water, sediment and plants of a sunflower cultivation

Mantzos, Nikolaos; Karakitsou, Anastasia; Hela, Dimitra; Patakioutas, G.; Leneti, Eleni; Konstantinou, Ioannis

doi:10.1016/j.scitotenv.2013.11.016

Cited by 44 publications

(40 citation statements)

References 33 publications

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“…The runoff generation time of the three treatments under different rainfall intensities is shown in Figure 4. This was due to the existence of surface vegetation, which increased the surface roughness and prolonged the runoff path, and was also able to increase the soil infiltration intensity via the root system [14,17,18]. In addition, the crown of the shrub-grass impacted the rainfall interception effect, weakening the splash impact of raindrops on surface soil particles [19], enabling the soil to maintain a strong infiltration rate for a long time, thus delaying the initial runoff generation time.…”

Section: Runoff Generation Timementioning

confidence: 99%

Analysis of Runoff and Sediment Losses from a Sloped Roadbed under Variable Rainfall Intensities and Vegetation Conditions

Jia

Sun

et al. 2020

Sustainability

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Vegetation plays an important role in reducing soil erosion. By exploring the allocation and coverage of different types of vegetation, we can improve management practices that can significantly reduce soil erosion. In this experiment, we study runoff and sediment losses on a shrub-grass planted, grass planted, and bare slope under different rainfall intensities. Results showed that the runoff generation time for the three subgrade types decreased as rainfall intensity increased (p < 0.05). The slopes planted with either grass or shrub-grass were able to effectively delay runoff generation. As rainfall intensity increased, the runoff amount increased for all treatments, with runoff in the bare slope increasing the most. The runoff reduction rate from the shrub-grass slope ranged from 54.20% to 63.68%, while the reduction rate from the slope only planted with grass ranged from 38.59% to 55.37%. The sediment yield from the bare slope increased from 662.66 g/m 2 (15 mm/h) to 2002.95 g/m 2 (82 mm/h) with increasing rainfall intensity in the plot. When compared with the bare slope, both the shrub-grass and planted grass slopes were able to retain an additional 0.9 g/m 2 to 4.9 g/m 2 of sediment, respectively. An accurate relationship between rainfall intensity, sloped vegetation types, and runoff reduction rate was obtained by regression analysis and validated. These results can provide a reference for improving soil and water conservation via improved vegetation allocation on a sloped roadbed.

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Section: Runoff Generation Timementioning

confidence: 99%

Analysis of Runoff and Sediment Losses from a Sloped Roadbed under Variable Rainfall Intensities and Vegetation Conditions

Jia

Sun

et al. 2020

Sustainability

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“…The half-life in soil approximately ranges from 30 to 56 days, and the organic matter content of the soil seems to influence the oxyfluorfen persistence and activity (Sondhia, 2010;Sondhia and Dixit, 2010). Finally, regarding its transport properties, it has been observed (Mantzos et al, 2014) that oxyfluorfen hardly moves into silty clay soil and exhibits low run-off potential.…”

Section: Introductionmentioning

confidence: 99%

Removal of oxyfluorfen from spiked soils using electrokinetic soil flushing with the surrounding arrangements of electrodes

Risco

Rubí-Juárez

Rodrigo

et al. 2016

Science of The Total Environment

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This work reports the results of a study in which the remediation of soil that undergoes an accidental discharge of oxyfluorfen is carried out by using electrokinetic soil flushing (EKSF). Two different electrode configurations were tested, consisting of several electrodes surrounding an electrode of different polarity (so-called 1A6C, one anode surrounded by six cathodes, and 1C6A, one cathode surrounded by six cathodes). A pilot plant scale was used (with a soil volume of 175dm(3)) to perform the studies. During the tests, different parameters were measured daily (flowrates, pH, electrical conductivity and herbicide concentration in different sampling positions). Furthermore, at the end of the test, a complete post-mortem analysis was carried out to obtain a 3-D map of the pollution, pH and electrical conductivity in the soil. The results demonstrate that electrode arrangement is a key factor for effective pollutant removal. In fact, the 1A6C configuration improves the removal rate by 41.3% versus the 27.0% obtained by the 1C6A configuration after a period of 35days. Finally, a bench mark comparison of this study of soil remediation polluted with 2,4-D allows for significant conclusions about the scale-up and full-scale application of this technology.

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“…The electrical current was provided by a Delta Electronika ES030-10 power supply (0-30 V, 0-10 A). The wastewater was stored in a 5000 cm 3 continuous mode at 50 mA cm -2 by feeding a constant volumetric rate to the system and extracting the same volume of treated water and solids. As it can be observed, a different behavior is observed in the removal of TOC and oxyfluorfen.…”

Section: Experimental Devicementioning

confidence: 99%

“…It is assessed as very toxic to aquatic organisms and affect terrestrial plants and aquatic ecological systems at all levels [7][8][9] . In addition, it is stable to hydrolysis at pH 4 to 9 but degraded rapidly by the sunlight in aqueous solution and it is dangerous 3,10 . The commercial brands that contains Oxyfluorfen commonly include other chemicals with higher water solubility (surfactant, cyclohexanone, etc.)…”

Section: Introductionmentioning

confidence: 99%

Electrocoagulation as the Key for an Efficient Concentration and Removal of Oxyfluorfen from Liquid Wastes

Muñoz

Llanos

Raschitor

et al. 2017

Ind. Eng. Chem. Res.

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Electrocoagulation is usually applied to remove pollutants from the liquid phase, but in this work it is investigated to concentrate pollutants, with the final aim to get a later much more efficient treatment by electrolysis. Results obtained during the treatment of wastes polluted with commercial oxyfluorfen (Fluoxil®) show that electrocoagulation exhibits a good efficiency in removing this model non-ionic halogenated pesticide. It was observed that the chemicals contained in Fluoxil® with higher solubility than oxyfluorfen are less efficiently removed, explaining the lower removal of TOC as compared to that of oxyfluorfen. An improvement in the design of the electrocoagulation was faced by increasing the amount of particles in the reactor, allowing to deplete the pesticide concentration down to levels 2-log below the inlet concentration. The herbicide is concentrated in a solid phase, from where it can be released to a concentrated waste just by changing the pH.

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Persistence of oxyfluorfen in soil, runoff water, sediment and plants of a sunflower cultivation

Cited by 44 publications

References 33 publications

Analysis of Runoff and Sediment Losses from a Sloped Roadbed under Variable Rainfall Intensities and Vegetation Conditions

Analysis of Runoff and Sediment Losses from a Sloped Roadbed under Variable Rainfall Intensities and Vegetation Conditions

Removal of oxyfluorfen from spiked soils using electrokinetic soil flushing with the surrounding arrangements of electrodes

Electrocoagulation as the Key for an Efficient Concentration and Removal of Oxyfluorfen from Liquid Wastes

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