Degradation of pesticides present in tomato rinse water by direct photolysis and UVC/H2O2: optimization of process conditions through sequential Doehlert design

Cunha, Isadora Luiza Climaco; Teixeira, Antônio Carlos Silva Costa

doi:10.1007/s11356-021-13387-7

Cited by 13 publications

(5 citation statements)

References 47 publications

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“…Moreover, the degradation kinetics of pesticide residues in wastewater could be fitted using a pseudo-first-order kinetics model by using UV irradiation ( 54 , 55 ). Cunha and Teixeira ( 54 ) reported that the pseudo-first-order reaction rate constant for azoxystrobin, difenoconazole, and imidacloprid was in the ranges of 0.128–0.249 s –1 , 0.019–0.048 s –1 , and 0.129–0.266 s –1 , respectively, in tomato rinse water by photolysis. In addition, the degradation of chlorpyrifos in water was carried out with sunlight illumination to extend the light spectrum to visible light.…”

Section: Applications Of Photolysis During Food Processingmentioning

confidence: 99%

Photolysis for the Removal and Transformation of Pesticide Residues During Food Processing: A State-of-the-Art Minireview

et al. 2022

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Pesticide residues are of great significant issue that exerted adverse effects on humans. There is a need for effective and non-toxic decontamination of pesticide residues during food processing. In this minireview, the recent advances in the degradation of pesticide residues by photolysis have been firstly described during food processing. The mechanisms of pesticide residues destruction by photolysis were discussed accordingly. Finally, applications of photolysis in the degradation of pesticide residues from beverages, fresh produce, and food rinse waste were also summarized.

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Section: Applications Of Photolysis During Food Processingmentioning

confidence: 99%

Photolysis for the Removal and Transformation of Pesticide Residues During Food Processing: A State-of-the-Art Minireview

et al. 2022

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“…The project from which this research originates from investigated the influence of initial H 2 O 2 concentrations ([H 2 O 2 ] 0 ) (x 1 ) and irradiance (x 2 ) on the performance of the UVC/H 2 O 2 system in the treatment of tomato rinse water contaminated by the three active ingredients AZO, DFZ and IMD. To this end, a solution was prepared with nominal concentrations of 3.0, 2.0 and 3.0 mg L −1 of AZO, DFZ and IMD, respectively, and sixteen laboratory experiments were carried out in a benchtop photochemical reactor, differing only in terms of system configurations [18]. These characteristics were established through the application of a sequential Doehlert design [52], a resource often applied in experimental designs.…”

Section: Problem Description and Alternative And Criteria Definitionmentioning

confidence: 99%

“…(2) For subsequent analyses, experiments E1, E2 and E3 are treated as E1-2-3, and the mean value will be applied. Source: Adapted from [18].…”

Section: Problem Description and Alternative And Criteria Definitionmentioning

confidence: 99%

“…UVC/H 2 O 2 application in the treatment of effluents containing pesticides has been extensively explored in the literature [12][13][14][15][16][17]. Concerning tomato rinse water disinfection, this process has been reported as achieving high removal rates of the contaminants azoxystrobin (AZO), difenoconazole (DFZ) and imidacloprid (IMD) [18], which are constituents of several commercial products applied in Brazilian crops for pest control [3]. However, studies on the use of UVC/H 2 O 2 as a treatment alternative concentrate efforts on the investigation of technological aspects, such as its compound degradation ability and the influence of the aqueous matrix and operational parameters on process performance.…”

Section: Introductionmentioning

confidence: 99%

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A Multi-Criteria Decision-Making Approach to Evaluate Different UVC/H2O2 Systems in Wastewater Treatment

2021

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High azoxystrobin (AZO), difenoconazole (DFZ), and imidacloprid (IMD) pesticide removal rates in sixteen bench-scale experiments concerning tomato washing water treatment were obtained through a UVC/H2O2 advanced oxidative process. Experimental conditions ([H2O2]0) and irradiance (EUVC) were optimized for higher degradation rates (pseudo-first-order reaction). To consider both economic aspects and environmental impacts when defining the treatment technology, as well as technological requirements, this study applied a multi-criteria decision-making method (MCDM) to assess and differentiate similar UVC/H2O2 process configurations. This allowed for the identification of the cheapest experimental arrangement with the lowest associated environmental impacts, coupled to the highest degradation rate (kIMD). After consulting experts to determine the importance of the applied criteria and measuring alternative performances, experiment E7 ([H2O2]0 = 43.5 mg L−1; EUVC = 15.0 W m−2; kIMD = 0.236 s−1) was determined as meeting the three criteria in a balanced manner. Although E7′s technological performance regarding degradation rate did not achieve the best individual result, it presented the lowest impacts and costs among the analyzed series, although alternatives are sensitive to decision-maker priorities. This study considered different factors of a process displaying potential industrial applications still in the design stage to achieve a more efficient and balanced solution.

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“…Using experimental design techniques, more information can be collected while able to perform some less experiments. Numerous techniques exist for designing experiments, including Central Composite Designs (CCD) [15], Box-Behnken Designs (BBD) [16], Doehlert Designs [17], Full factorial designs [18], Fractional Factorial Designs [19], Mixture Designs [20], Plackett-Burman Designs [21], Taguchi Designs [22], and so on [23]. Full factorial experiments are not always feasible due to nancial, duration, or other limitations [24].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CoFe 2 O 4 @ZnMOF/Graphene nanoflake for photocatalytic degradation of diazinon under visible light irradiation: Optimization and modeling using a fractional factorial method

Roostaee

Sheikhshoaie

2022

Preprint

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One of the pesticides made of organophosphates is diazinon. If it persists in soil and water resources, it may endanger animal and human health. Here, Diazinon was photocatalytically degraded under visible light using CoFe2O4@ZnMOF/Graphene nanoflake (GNF) nanocomposite, which had not been used before for diazinon degradation. Initially, a CoFe2O4@ZnMOF /GNF with excellent optical characteristics was developed. This nanocomposite characterized with XRD, FESEM and TEM microscopy. Numerous factors influencing the photocatalytic degradation of diazinon were investigated using a fractional factorial design 24−1. The investigated factors were: the initial concentration of diazinon, the photocatalyst dosage, contact time and pH. According to the studies, these parameters have a significant impact on degradation efficiency. The highest experimental degradation efficiency achieved was 97.38%. The software determined that the optimum conditions were 10mg catalyst, 30 ppm Diazinon dosage, 90 min reaction time, and pH 9. The kinetics of diazinon photocatalytic degradation were investigated and reported to follow a pseudo-first-order kinetic model. Finally, after five runs, the reusability of the CoFe2O4@Zn MOF-GNF photocatalyst demonstrated excellent chemical stability during the photocatalytic degradation of diazinon.

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Degradation of pesticides present in tomato rinse water by direct photolysis and UVC/H2O2: optimization of process conditions through sequential Doehlert design

Cited by 13 publications

References 47 publications

Photolysis for the Removal and Transformation of Pesticide Residues During Food Processing: A State-of-the-Art Minireview

Photolysis for the Removal and Transformation of Pesticide Residues During Food Processing: A State-of-the-Art Minireview

A Multi-Criteria Decision-Making Approach to Evaluate Different UVC/H2O2 Systems in Wastewater Treatment

Synthesis of CoFe 2 O 4 @ZnMOF/Graphene nanoflake for photocatalytic degradation of diazinon under visible light irradiation: Optimization and modeling using a fractional factorial method

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