Solar photocatalytic degradation of some hazardous water-soluble pesticides at pilot-plant scale

Oller, Isabel; Gernjak, Wolfgang; Maldonado, Manuel I.; Pérez-Estrada, Leónidas A.; Pérez, J.A. Sánchez; Malato, Sixto

doi:10.1016/j.jhazmat.2006.05.075

Cited by 184 publications

(86 citation statements)

References 23 publications

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“…The use of CPC solar photoreactors was shown to be effective for TiO 2 solar photocatalytic degradation of several organic contaminants such as antibiotics [167], azo dyes [168], water disinfection [169,170], pesticides [8,171], humic acids [172], agro-food industry effluents [173], and ferricyanide [174]. 17 International Journal of Photoenergy Pereira and coworkers [167] studied the TiO 2 solar photocatalytic degradation of the antibiotic amoxicillin in aqueous solutions at neutral conditions (pH 7.5).…”

Section: Organic Matter Degradation By Tio 2 Solarmentioning

confidence: 99%

Recent Overview of Solar Photocatalysis and Solar Photo-Fenton Processes for Wastewater Treatment

Gutierrez-Mata

Velázquez-Martínez

Álvarez-Gallegos

et al. 2017

International Journal of Photoenergy

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This literature research, although not exhaustive, gives perspective to solar-driven photocatalysis, such as solar photo-Fenton and TiO 2 solar photocatalysis, reported in the literature for the degradation of aqueous organic pollutants. Parameters that influence the degradation and mineralization of organics like catalyst preparation, type and load of catalyst, catalyst phase, pH, applied potential, and type of organic pollutant are addressed. Such parameters may also affect the photoactivity of the catalysts used in the studied solar processes. Solar irradiation is a renewable, abundant, and pollution-free energy source for low-cost commercial applications. Therefore, these solar processes represent an environmentally friendly alternative mainly because the use of electricity can be decreased/avoided.

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Section: Organic Matter Degradation By Tio 2 Solarmentioning

confidence: 99%

Recent Overview of Solar Photocatalysis and Solar Photo-Fenton Processes for Wastewater Treatment

Gutierrez-Mata

Velázquez-Martínez

Álvarez-Gallegos

et al. 2017

International Journal of Photoenergy

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“…Imazapyr is a persistent herbicide, with a half-life varying from 21 days to 49 months, and a high mobility in soils. [3][4] Therefore, it is likely suspected to contaminate groundwater. 5 Elimination of imazapyr present in drinking water by treatment with ozone has been demonstrated to be unsuccessful since half of the initial compound remains in water after the process.…”

Section: Introductionmentioning

confidence: 99%

“…4 One of the alternatives to gain greater mineralization efficiency is the use of ozone in the presence of catalyst in order to enhance the free hydroxyl radicals production. [4][5] The photocatalytic ozonation have been studied by many studies worldwide and the high efficiency of this treatment has been explained by a synergistic effect between ozonation and photocatalysis. The photogenerated electrons can react with ozone molecules generating ozonide radicals while decreasing the possible recombination of electronehole pairs.…”

Section: Introductionmentioning

confidence: 99%

Factors Influencing Imazapyr Herbicide Removal from Wastewater Using Photocatalytic Ozonation

Bougarrani

Azzouzi²,

Akel³

et al. 2018

ACSi

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This study investigates the degradation of imazapyr herbicide from wastewater by photocatalytic ozonation using TiO 2 as a semiconductor. Effects of operational parameters on imazapyr removal efficiency including TiO 2 dosing, initial herbicide concentration and pH were also studied. Obtained results showed that more than 90% of removal efficiency representing the disappearance of imazapyr was maintained until 7 µM in the presence of 200 mgL -1 of UV100-TiO 2 . Otherwise, the degradation of imazapyr followed the first-order kinetics with a photocatalytic rate constant of 0.247 min -1 , and complete degradation was achieved within 20 min using photocatalytic ozonation for 5 µM of Imazapyr at pH 7.

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“…Due to the toxic and persistent nature of some agrochemicals, contamination problems arise in water bodies 1 . Some of them are harmful, cause cancer and endocrinal disruptions.…”

Section: Introductionmentioning

confidence: 99%

Phenol and methylene blue photodegradation over Ti/SBA-15 materials under uv light

Olejnik

Pasieczna-Patkowska

Lesiuk

et al. 2016

Polish Journal of Chemical Technology

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Ordered SBA-15 mesoporous silica supports have been synthesized and used for incorporation of titanium with different Ti/Si weight ratio via incipient wetness impregnation. Titanium tetraisopropoxide (TTIP) was used as a source of Ti. Obtained catalysts were characterized to investigate the chemical framework and morphology by nitrogen sorption measurements, powder X-ray diffraction (XRD), X-ray fl uorescence elemental analysis (XRF), transmission electron microscopy (TEM), UV-Vis diffuse refl ectance spectroscopy (UV-Vis DRS) and Fourier transform infrared photoacoustic spectroscopy (FT-IR/PAS). The photocatalytic degradation of phenol and methylene blue water solutions were selected as a probe reactions to the photoactivity test of prepared samples and to verify the potential application of these materials for water purifi cation. Experimental results indicate that the photocatalytic activity of Ti/Si mixed materials depends on the adsorption ability of composites and the photocatalytic activity of the titanium oxide.

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Solar photocatalytic degradation of some hazardous water-soluble pesticides at pilot-plant scale

Cited by 184 publications

References 23 publications

Recent Overview of Solar Photocatalysis and Solar Photo-Fenton Processes for Wastewater Treatment

Recent Overview of Solar Photocatalysis and Solar Photo-Fenton Processes for Wastewater Treatment

Factors Influencing Imazapyr Herbicide Removal from Wastewater Using Photocatalytic Ozonation

Phenol and methylene blue photodegradation over Ti/SBA-15 materials under uv light

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