Studies on Degradation of Diquat Pesticide in Aqueous  Solutions Using Electrochemical Method

Ghalwa, Nasser Abu; Shawish, Hazem M. Abu; Hamada, Mazen; Hartani, Khaled; Basheer, Abed Al Hakem

doi:10.4236/ajac.2012.32014

Cited by 17 publications

(10 citation statements)

References 14 publications

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“…Na 2 SO 4 and NaNO 3 electrolytes types do not contain chloride ion in their structures and can transform into a more stable media types broken down by direct electrolysis. These observations are confirmed by other studies . Same removal efficiency arrangements were also obtained for TOC and TP.…”

Section: Resultssupporting

confidence: 90%

Electro‐Oxidation of Pistachio Processing Industry Wastewater Using Graphite Anode

Fìl

Boncukçuoğlu

Yılmaz

et al. 2014

CLEAN Soil Air Water

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In the present study, removal of chemical oxygen demand (COD), total organic carbon (TOC), and total phenols (TP) from pistachio processing industry wastewater was investigated using electro‐oxidation. COD, TOC, and TP removal efficiencies were compared considering stirring speed, support electrolyte types, support electrolyte concentrations, wastewater initial pH, and current density by using stainless steel cathodes and graphite anodes. Results showed that optimum values of operating variables, i.e., processing time, stirring speed, wastewater pH, current density, and support electrolyte (NaCl), were 5 h, 400 rpm, 3, 30 mA/cm2, and 1.25 M, respectively. Removal efficiencies of 99.79, 76.55, and 100% were obtained with these values for COD, TOC, and TP, respectively. Removal of COD, TOC, and TP increased with increased chloride concentration and current density at acidic pH.

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Section: Resultssupporting

confidence: 90%

Electro‐Oxidation of Pistachio Processing Industry Wastewater Using Graphite Anode

Fìl

Boncukçuoğlu

Yılmaz

et al. 2014

CLEAN Soil Air Water

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“…Diquat is not readily degraded by microbes, and exhibit low susceptibility to photodegradation (Howard, 1991;Paul et al, 1994;Chung et al, 2008;Siemering et al, 2008). It has high affinity for organic matter and water sediments, which normally decreases the concentration of free diquat in the water column (Ghalwa et al, 2012). In aquatic environment, diquat sorbs to suspended solid sediment and also to aquatic vegetation (Simsiman and Chesters, 1976;HSDB, 2003).…”

Section: Chemical Factors In Amphibian Declinesmentioning

confidence: 99%

Exposure Impacts of Diquat dibromide herbicide formulation on amphibian larval development

Babalola

Wyk

2021

Heliyon

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Many anthropogenic chemicals in general, and specifically aquatic herbicide formulations have the potential to modulate the thyroid pathways of the endocrine system of aquatic organisms, because they are normally applied directly into the aquatic system, to manage aquatic weeds. These thyroidal effects have been widely linked with disruption in developmental and reproductive processes. In fact, the exposure impacts of many of these substances on metamorphic organisms could produce a precocious metamorphosis. Using Xenopus Metamorphosis Assay (XEMA) protocol, this study assessed the thyroidal effects of environmentally relevant concentrations of Diquat dibromide at 0.05, 0.11, and 0.14 mg/L on Xenopus laevis metamorphosis. The formulation significantly reduced both the fore and hind limb lengths, and disrupted the developmental stage at concentrations of 0.11 and 0.14 mg/L, with a median at NF-stage 57, while median of NF-stage 60 was recorded in the control. Histopathologically, although there was no significant difference in thyroid gland area, the thyroid colloidal area was significantly reduced at 0.14 mg/L, while the mean height of the thyroid follicle increased at 0.05 mg/L The result indicates an extra-thyroidal pathway, due to the dissociation between stage developmental effects and thyroid histopathology. The role of stress pathway occasioned by oxidative mode of action, involving lipid peroxidation and cell damage observed in this study need further investigation, in order to further characterize the physiological and ecological effects on wildlife.

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“…The electrolyzed solutions spectra did not show any significant differences to the initial spectrum. This could be due either to high ohmic drop or formation of an adherent film on the anode surface, which poisons the electrode surface [29]. The supporting electrolyte was then replaced by KCl in order to avoid film formation and to check the possibility of electrogenerated chloride/hypochlorite ions pair acting as mediator on the MV oxidation.…”

Section: Preliminary Testsmentioning

confidence: 99%

Electrochemical oxidation of paraquat in neutral medium

Cartaxo

Borges

Pereira

et al. 2015

Electrochimica Acta

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Studies on Degradation of Diquat Pesticide in Aqueous Solutions Using Electrochemical Method

Cited by 17 publications

References 14 publications

Electro‐Oxidation of Pistachio Processing Industry Wastewater Using Graphite Anode

Electro‐Oxidation of Pistachio Processing Industry Wastewater Using Graphite Anode

Exposure Impacts of Diquat dibromide herbicide formulation on amphibian larval development

Electrochemical oxidation of paraquat in neutral medium

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