Evaluation of Zinc Oxide-Based Photocatalytic Degradation of a Commercial Pesticide

Burbano, J.C.; Cruz, I.; Colina–Márquez, José; López–Vásquez, A.; Machuca, Fiderman

doi:10.1515/jaots-2008-0106

Cited by 9 publications

(6 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For chlorpyrifos degradation Kanmoni et al [42] used ZnO concentrations between 0.1 g/L and 1 g/L and showed that the best results were at a ZnO dosage of 0.75 g/L. Burbano et al [43] quantified the elimination of dimethylamine salt of 2,4-dichlorophenoxyacetic acid by photodegradation and reported as appropriate a zinc oxide concentration of 0.35 g/L. Ceretta et al [44] coupled the bacteria effect with that of a composite containing ZnO and polypyrrole and concluded that the adequate catalyst dosage for Direct Black azo dye degradation was of 2 g/L.…”

Section: Influence Of Photocatalyst Concentrationmentioning

confidence: 99%

An Eco-Friendly Solution for the Efficient Elimination of Pentoxifylline from Water: An Operational Performance Investigation

Gavrilă¹,

Simion²,

Grigoraș³

et al. 2020

Rev. Chim.

View full text Add to dashboard Cite

In recent years, more and more pollutants (including pharmaceuticals, personal care products, pesticides, herbicides, hormones, chemicals) are detected in the aquatic environment. Even if they are encountered in very low concentrations, the toxicological data reveal that they represent a major risk both for the water living organisms and for human beings. Moreover, an important resistance to the classical methods applied at wastewater treatment plants characterizes them. Aeration, coagulation, flocculation, sedimentation, filtration, adsorption, oxidation, activated sludge treatments are often either insufficient or completely ineffective. To overcome these drawbacks, many researches were dedicated to the development of new effective techniques for the removal of these water pollutants. Advanced oxidation methods are widely reported as being of the most efficient ones. In this article, we investigate the utility of the photocatalysis as a sustainable alternative for the enhanced elimination of an emergent water micropollutant. We evaluate here the impact of several parameters (catalyst type and concentration, contaminant concentration, radiant flux intensity) on the process efficiency. The targeted compound involved in the experiments was the pentoxifylline (a drug used in the treatment of diseases such as diabetic neuropathy, osteoradionecrosis or hepatic fibrogenesis). The registered pollutant removal rate under the selected reaction conditions (photocatalyst type: ZnO; photocatalyst concentration: 0.5 g/L; incident light flux: 9.52 mW/cm2; natural pH) reached values near to 100 % providing new insights on the viability and the efficiency of the evaluated methodology.

show abstract

Section: Influence Of Photocatalyst Concentrationmentioning

confidence: 99%

An Eco-Friendly Solution for the Efficient Elimination of Pentoxifylline from Water: An Operational Performance Investigation

Gavrilă¹,

Simion²,

Grigoraș³

et al. 2020

Rev. Chim.

View full text Add to dashboard Cite

show abstract

“…It is also possible to find such pollutants in surface water and groundwater, which also require treatment to achieve an acceptable quality of drinking water (Zhang et al, 1994;Ahmed et al, 2011). In the field of pollutant degradation, photocatalysis is gaining considerable attention (Anandan et al, 2007;Burbano et al, 2008;Blinova et al, 2010). In the last two decades, to encourage specific redox processes on semiconductor surfaces, the use of colloidal semiconductors and the introduction of catalysts have been adopted (Daneshvar et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Applications of Fe–Ag Co-Doped TiO2 Nanoparticles in Removal of Flumioxazin Pesticide Residues in Water

Rao

Prashanthi

Ahmed

et al. 2021

Front. Nanotechnol.

View full text Add to dashboard Cite

Fe–Ag co-doped TiO2 nanoparticles (NPs) were prepared as a photocatalyst using a precipitation method for the removal of flumioxazin pesticide residues in water. The analytical method was validated with specificity, linearity, recovery, precision, the limit of quantification, and detection limit. Linearity was determined by different known concentrations of standard solutions. Detection limit was identified as the lowest concentration resulting in a 3-fold response to baseline noise. Photolytic and photocatalytic studies were conducted in borosil glass bottles under sunlight at a single fortification level (1.0 μg/mL) in Milli-Q water with various pH values (pH 4.0, 7.0, and 9.0). The optimum catalyst concentration recommended for complete degradation was found to be 50 mg/L under sunlight. The HPLC-UV method was used to determine flumioxazin residues in water, and the rate constant, DT50, and DT90 values were calculated from the data obtained. The photolytic results do not indicate a significant residue loss due to adsorption. Fe–Ag co-doped TiO2 NPs are an outstanding decontaminating catalyst in various water samples.

show abstract

“…The GAOX group (Universidad del Valle, 2008) published a study in which they evaluated the artificial UV‐assisted photocatalytic discoloration of methylene blue (MB) with a CPC and a tubular photoreactors. The MB removal were 70.8 % for the CPC and 63.46 % for the tubular photoreactor, respectively [34] …”

Section: A Review Of the Aops Past In Colombiamentioning

confidence: 96%

“…The MB removal were 70.8 % for the CPC and 63.46 % for the tubular photoreactor, respectively. [34] The Research Group on Applied Physicochemical Processes (Universidad de Antioquia, 2008) evaluated the photocatalytic degradation of a real wastewater from a chemical industry using a solar photoreactor of flat plates with TiO 2 /SiO 2 coating. They obtained a COD removal from 6 to 46 % and good biodegradability indexes, which proved that photocatalysis is a feasible technology to be coupled with biological processes.…”

Section: A Review Of the Aops Past In Colombiamentioning

confidence: 99%

The History and Prospective of the AOPs for Environmental Applications in Colombia**

et al. 2021

View full text Add to dashboard Cite

show abstract

Evaluation of Zinc Oxide-Based Photocatalytic Degradation of a Commercial Pesticide

Abstract: In this study, the performance of zinc oxide as a catalyst for photodegradation of commercial herbicide 2,4-D AMINA 4

Cited by 9 publications

References 2 publications

An Eco-Friendly Solution for the Efficient Elimination of Pentoxifylline from Water: An Operational Performance Investigation

An Eco-Friendly Solution for the Efficient Elimination of Pentoxifylline from Water: An Operational Performance Investigation

Photocatalytic Applications of Fe–Ag Co-Doped TiO2 Nanoparticles in Removal of Flumioxazin Pesticide Residues in Water

The History and Prospective of the AOPs for Environmental Applications in Colombia**

Contact Info

Product

Resources

About