Increased biodegradability of UltracidTM in aqueous solutions with solar TiO2 photocatalysis

García-Ripoll, A.; Amat, Ana M.; Arqués, A.; Vicente, R.; López, María Francisca; Oller, I.; Maldonado, Manuel I.; Gernjak, Wolfgang

doi:10.1016/j.chemosphere.2006.12.077

Cited by 35 publications

(16 citation statements)

References 28 publications

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“…Methidathion [O,O-dimethyl-S-(5-methoxy-1,3,4-thiadiazolinyl-3-methyl) dithiophosphate] is a widely used organophosphorous insecticide, it was chosen as the target molecule for the present study by its biotoxicity (The acute oral LD50, for rats is approximately 54 mg/kg [9]. …”

Section: Introductionmentioning

confidence: 99%

A comparative study of electrochemical oxidation of methidation organophosphorous pesticide on SnO2 and boron-doped diamond anodes

Hachami¹,

Errami

Bazzi³

et al. 2015

Chemistry Central Journal

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BackgroundElectrochemical oxidation considered to be among the best methods in waste water desalination and removing toxic metals and organic pesticides from wastewater like Methidathion. The objective of this work is to study the electrochemical oxidation of aqueous wastes containing Methidathion using boron doped diamond thin-film electrodes and SnO2, and to determine the calculated partial charge and frontier electron density parameters.ResultsElectrolysis parameters such as current density, temperature, supporting electrolyte (NaCl) have been optimized. The influences of the electrode materials on methidathion degradation show that BDD is the best electrode material to oxidize this pesticide organophosphorous. Energetic cost has been determinate for all experiments. The results provide that 2 % of NaCl, 60 mA cm−2 and 25 ºC like the optimized values to carry out the treatment. For BDD the achieved Chemical Oxidation Demand reduction was about 85 %, while for SnO2 it was about 73 %. The BDD anode appears to be the more promising one for the effective electrochemical treatment of methidathion. Finally the theoretical calculation was done by using the calculation program Gaussian 03W, they are a permit to identify the phenomena engaged near the electrode and to completely determine the structures of the products of electrochemical oxidation formed during the degradation and which they are not quantifiable in experiments because of their high reactivity.ConclusionsThe comparison of the results relating to the two electrodes indicates that these materials have a power to reduce the quantity of the organic matter in the electrolyzed solution. But the speed of oxidation of these compounds is different according to the materials of the electrodes used.Graphical abstract:Structural of methidathion [O,O-dimethyl-S-(5-methoxy-1,3,4-thiadiazolinyl-3-methyl) dithiophosphate] used for study the electrochemical oxidation

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Section: Introductionmentioning

confidence: 99%

A comparative study of electrochemical oxidation of methidation organophosphorous pesticide on SnO2 and boron-doped diamond anodes

Hachami¹,

Errami

Bazzi³

et al. 2015

Chemistry Central Journal

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“…TiO 2 and ZnO), exciting light sources with band-gap energy and electron acceptors such as oxygen (O 2 ) [1]. The process gradually breaks down the contaminant molecule, thus zero residues of the original material remain and therefore no sludge requiring disposal to landfills is produced [2,3]. Titanium dioxide (TiO 2 ) is recognised as one of the best heterogeneous photocatalyst due to its powerful photo-oxidative activity, chemical constancy defiant against photo and chemical corrosion [4], commercial availability and safety.…”

Section: Introductionmentioning

confidence: 99%

Preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst

Aziz

Puma

Ibrahim

et al. 2013

Journal of Experimental Nanoscience

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“…The valence band and conduction band energies of the TiO 2 are estimated to be þ3.1 and À0.1 V, respectively, which means that its band gap energy is 3.2 eV and therefore absorbs in the near UV range (l < 387 nm). There are several works regarding the degradation of phenol under solar sunlight (Goswami, 1997;Hincapié et al, 2005;Vione et al, 2005;Bandala et al, 2004;Feitz et al, 2000;García-Ripoll et al, 2007). Since most of the work were carried out with the Degussa P-25 Ò catalyst, the present work focused on a locally available catalyst because it is more economical.…”

Section: Introductionmentioning

confidence: 99%

Degradation of phenol by TiO2-based heterogeneousphotocatalysts in presence of sunlight

Saravanan

Pakshirajan

Saha

2009

Journal of Hydro-environment Research

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Increased biodegradability of UltracidTM in aqueous solutions with solar TiO2 photocatalysis

Cited by 35 publications

References 28 publications

A comparative study of electrochemical oxidation of methidation organophosphorous pesticide on SnO2 and boron-doped diamond anodes

A comparative study of electrochemical oxidation of methidation organophosphorous pesticide on SnO2 and boron-doped diamond anodes

Preparation, characterisation and solar photoactivity of titania supported strontium ferrite nanocomposite photocatalyst

Degradation of phenol by TiO2-based heterogeneousphotocatalysts in presence of sunlight

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