In situ generated TiO 2 over zeolitic supports as reusable photocatalysts for the degradation of dichlorvos

Gómez, Silvina del Valle; Marchena, Candelaria Leal; Renzini, María Soledad; Pizzio, Luis R.; Pierella, Liliana B.

doi:10.1016/j.apcatb.2014.06.047

Cited by 57 publications

(15 citation statements)

References 58 publications

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“…The photocatalyst did shown a remarkably photostability by degraded around 85.8% of dye after the third run [13]. Other than that, Gomez et al, had been reutilize the photocatalyst by filtering, washed, and dried in air oven under 70 o C. The result did not portray a large different in term of degradation percentage nor the mineralization for the 1st and the 8th cycle [14]. It is very important for the industries as they can lower their chemical usage besides reducing their cost.…”

Section: Introductionmentioning

confidence: 94%

Reusability Performance of Zinc Oxide Nanoparticles for Photocatalytic Degradation of POME

et al. 2018

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Performance and reusability of different zinc oxide nanoparticles (ZnO-PVP and ZnO-PEG) for photocatalytic degradation of palm-mill oil effluent (POME) has been studied. The nanoparticles properties were characterised with fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The TEM results show that ZnO-PEG nanoparticles exhibit the smaller size than ZnO-PVP with less agglomeration. It was found that ZnO-PEG shows better effectiveness than ZnO-PVP in reducing turbidity, colour and increasing the dissolved oxygen (DO). By using two types of reusability methods: (a) oven drying (b) hot water rinsing, the oven drying method portrayed the most efficient route for POME treatment. This research would be a solution to the palm oil industry for photocatalyst recovering as well as reduction of the chemical usage in order to meet the development of advanced and greener technologies.

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Section: Introductionmentioning

confidence: 94%

Reusability Performance of Zinc Oxide Nanoparticles for Photocatalytic Degradation of POME

et al. 2018

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“…It is generally used as insecticide on fruits and vegetables and anti-parasitic agent for the control of various parasites. Since, dichlorvos has relatively high water solubility and volatility; it is frequently detected as a major organic pollutant in atmosphere, surface, coastal and ground water [2,3]. Half-life for dichlorvos in aqueous solutions ranges from 10 to 40 h and is usually substantially higher (around 40 h) in acidic conditions.…”

Section: Introductionmentioning

confidence: 99%

Effective removal of dichlorvos from aqueous solution using biopolymer modified MMT–CuO composites: Equilibrium, kinetic and thermodynamic studies

Sahithya

Das

2015

Journal of Molecular Liquids

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“…In other countries like USA [17] or Australia [18], the use of DDVP has been restricted but still continues. Moreover, DDVP is still largely used in many developing countries where poor environmental controls are applied [19,20]. The widespread employment of this insecticide has therefore caused its detection in surface waters worldwide, in concentrations ranging from 1.4 to 5630 ng L -1 [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Priority pesticide dichlorvos removal from water by ozonation process: Reactivity, transformation products and associated toxicity

Cruz-Alcalde

Sans

2018

Separation and Purification Technology

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The treatability of waters contaminated with priority pesticide dichlorvos (DDVP) by means of ozonation has been assessed for the first time. In order to do so, reaction kinetics, transformation mechanisms and associated toxicity have been inspected in detail. Secondorder rate constants of DDVP reactions with O3 and OH• were determined to be 590 and 2.2•10 9 M -1 s -1 , respectively. These values partly explained the degradation profiles obtained during experiments with and without the presence of an OH• scavenger, in which the significant contribution of the indirect degradative route in the removal of DDVP was revealed. LC-MS analyses for ozonated samples allowed the elucidation of desmethyl dichlorvos (d-DDVP), dichloroacetic acid (DCA) and dimethyl phosphate (DMP) as main transformation products (TPs). DMP was found to be present in both O3 and OH•mediated oxidation pathways. Three possible degradation routes were proposed for OH• degradation, whereas the direct oxidation by O3 was only well-explained by the addition of this oxidant to the double bond of DDVP dichlorovinyl moiety. Microtox ® bioassays revealed the inability of molecular ozone to reduce the toxicity of the medium and pointed out the importance of OH• contribution in the degradation process. In general, ozonation could be a suitable treatment alternative for DDVP, formed TPs and associated toxicity abatement.

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In situ generated TiO 2 over zeolitic supports as reusable photocatalysts for the degradation of dichlorvos

Cited by 57 publications

References 58 publications

Reusability Performance of Zinc Oxide Nanoparticles for Photocatalytic Degradation of POME

Reusability Performance of Zinc Oxide Nanoparticles for Photocatalytic Degradation of POME

Effective removal of dichlorvos from aqueous solution using biopolymer modified MMT–CuO composites: Equilibrium, kinetic and thermodynamic studies

Priority pesticide dichlorvos removal from water by ozonation process: Reactivity, transformation products and associated toxicity

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