Combined advanced oxidation and biological treatment processes for the removal of pesticides from aqueous solutions

Lafi, Walid K.; Al-Qodah, Zakaria

doi:10.1016/j.jhazmat.2006.02.027

Cited by 136 publications

(49 citation statements)

References 23 publications

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“…In order to minimise the potential health risks, various treatment processes have been investigated to remove pesticides from water, including photo catalysis [7][8][9], electrochemical degradation [10,11], Fenton oxidation [10], hydrogen peroxide oxidation [12], and ultrasound [13]. Physico-chemical techniques which have demonstrated treatment efficacy include adsorption [14], membrane technology [15], ozone, UV photolysis, ozone/ultraviolet (UV) photolysis [16,17], and ultrasonication [18]. Misra [19] reviewed the potential opportunities and challenges associated with various advanced oxidation processes for pesticide dissipation.…”

Section: Introductionmentioning

confidence: 99%

Pesticide degradation in water using atmospheric air cold plasma

Sarangapani¹,

Misra²,

Milosavljević³

et al. 2016

Journal of Water Process Engineering

197

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a b s t r a c tA high voltage dielectric barrier discharge plasma reactor using atmospheric air as the inducer gas was studied for the degradation of pesticides (dichlorvos, malathion, endosulfan) in water. The degradation kinetics of the pesticides were studied using GC-MS as a function of plasma control parameters. Electrical characterisation of the plasma revealed that the plasma discharge consisted of filamentary streamers. Excited nitrogen, reactive oxygen species and OH radicals generated in the dielectric barrier discharge (DBD) plasma reactor were identified using optical emission spectroscopy. Ozone, used as an indicator for metastable oxygen species, was quantified within the reactor at concentrations of 1600, 2200, 2800 ppm after 8 min of plasma treatment for applied voltages of 60, 70, and 80 kV respectively. The degradation efficacy of pesticides after 80 kV and 8 min of plasma treatment were found to be 78.98 ± 0.81% for dichlorvos, 69.62 ± 0.14% for malathion and 57.71 ± 0.58% for endosulfan. Degradation was found to follow first order kinetics. GC-MS analyses showed that the degraded compounds and intermediates formed were less toxic than the parent pesticide. A proposed mechanism of degradation of these pesticides is suggested.

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Section: Introductionmentioning

confidence: 99%

Pesticide degradation in water using atmospheric air cold plasma

Sarangapani¹,

Misra²,

Milosavljević³

et al. 2016

Journal of Water Process Engineering

197

View full text Add to dashboard Cite

show abstract

“…In recent years, the combined processes, in particular physicochemical and biological combined treatments, have received a growing attention for their efficiency to achieve complete mineralization of biorecalcitrant compounds with the objective to reduce operating costs [1][2][3][4][5][6][7][8][9][10][11][12]. In such systems, a physicochemical pretreatment such as an advanced oxidation process (AOP) or an electrochemical method is used to change the structure of pollutants.…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic reduction of metronidazole using titanocene/Nafion®-modified graphite felt electrode

Saidi

Soutrel

Fourcade

et al. 2016

Electrochimica Acta

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“…In general, the concentration of hydroxyl radicals increases when ozone is combined with ultrasound or UV light resulting in enhanced effects. For example, Lafi and Al-Qodah (2006) observed that the use of ozone combined with UV radiation enhances pesticides degradation in aqueous solutions (see Figure 7). However, it should be noted that the desired reactions in liquid media largely rely on shifting the equilibrium relations, which requires maintenance of the right pH conditions.…”

Section: Combined Approachesmentioning

confidence: 99%