Kinetics of the degradation of n-butyl benzyl phthalate using O3/UV, direct photolysis, direct ozonation and UV effects

Lovato, Maria Eugenia; Gilliard, María Belén; Cassano, Alberto E.; Martín, Carlos Alberto

doi:10.1007/s11356-014-2796-9

Cited by 15 publications

(6 citation statements)

References 31 publications

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“…This process was reported to be effective in the degradation of some dyes [26,27]. UV is also extensively used in combination with O 3 [28]. In one study, besides acting as a catalyst, UV radiation also contributed to the enhanced removal of total organic carbon (TOC) and chemical oxygen demand (COD), in a decolorization experiment of Reactive Blue 19 [29].…”

Section: Chemical Formula: C23h19n2nao5smentioning

confidence: 99%

UV-Catalyzed Persulfate Oxidation of an Anthraquinone Based Dye

et al. 2020

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Wastewater from the textile industry has a substantial impact on water quality. Synthetic dyes used in the textile production process are often discharged into water bodies as residues. Highly colored wastewater causes various of problems for the aquatic environment such as: reducing light penetration, inhibiting photosynthesis and being toxic to certain organisms. Since most dyes are resistant to biodegradation and are not completely removed by conventional methods (adsorption, coagulation-flocculation, activated sludge, membrane filtration) they persist in the environment. Advanced oxidation processes (AOPs) based on hydrogen peroxide (H2O2) have been proven to decolorize only some of the dyes from wastewater by photocatalysis. In this article, we compared two very different photocatalytic systems (UV/peroxydisulfate and UV/H2O2). Photocatalyzed activation of peroxydisulfate (PDS) generated sulfate radicals (SO4•−), which reacted with the selected anthraquinone dye of concern, Acid Blue 129 (AB129). Various conditions, such as pH and concentration of PDS were applied, in order to obtain an effective decolorization effect, which was significantly better than in the case of hydroxyl radicals. The kinetics of the reaction followed a pseudo-first order model. The main reaction pathway was also proposed based on quantum chemical analysis. Moreover, the toxicity of the solution after treatment was evaluated using Daphnia magna and Lemna minor, and was found to be significantly lower compared to the toxicity of the initial dye.

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Section: Chemical Formula: C23h19n2nao5smentioning

confidence: 99%

UV-Catalyzed Persulfate Oxidation of an Anthraquinone Based Dye

et al. 2020

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“…All stock solutions and working standard solutions were stored at −20°C. All prepared solutions and rat biological matrices were handled and kept in light-resistant containers throughout the study to prevent the photocatalytic degradation of BBP [41,42].…”

Section: Preparation Of Stock and Working Standard Solutionsmentioning

confidence: 99%

“…Fresh rat biological matrices were collected from at least five individual rats. To prevent the enzymatic degradation of BBP, formic acid in distilled water was immediately mixed with rat biological matrices (final composition of formic acid 0.5 %) [42,43]. QC samples were prepared by spiking the standard working solutions to the blank rat biological matrices of plasma, urine, and 10 different tissues of kidney, liver, stomach, small intestine, large intestine, spleen, brain, testis, thyroid, and fat.…”

Section: Preparation Of Calibration Curve and Quality Control (Qc) Samentioning

confidence: 99%

Sensitive liquid chromatography-tandem mass spectrometry method for the simultaneous determination of benzyl butyl phthalate and its metabolites, monobenzyl phthalate and monobutyl phthalate, in rat plasma, urine, and various tissues collected from a toxicokinetic study

Kim

Shin

et al. 2015

Anal Bioanal Chem

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This study describes the development of a sensitive liquid chromatography-electrospray-tandem mass spectrometry method for the simultaneous determination of benzyl butyl phthalate (BBP) and its major metabolites, monobenzyl phthalate (MBzP) and monobutyl phthalate (MBuP), in rat plasma, urine, and 10 different tissues. The method was validated with regard to the specificity, linearity, precision, accuracy, lower limit of quantification (LLOQ), recovery, and stability by using the matrix-matched quality control samples. The assay achieved LLOQ of 1 ng/ml of BBP for plasma and urine, 4 ng/g for kidney and liver, 10 ng/g for fat, and 20 ng/g for all other tissues. For MBzP and MBuP, the assay achieved LLOQ of 5 ng/ml for plasma and urine, 10 ng/g for fat, and 20 ng/g for all other tissues. The disposition of BBP was characterized by a large volume of distribution (71.1-82.9 l/kg) and a high clearance (838.7-871.0 ml/min/kg). It was extensively metabolized to MBzP and MBuP, with their levels consistently exceeding the BBP levels. The distribution of BBP, MBzP, and MBuP to tissues of kidney, liver, stomach, small intestine, large intestine, spleen, brain, testis, thyroid, and fat was determined under steady-state conditions. For BBP, the steady-state tissue-to-plasma partition coefficient (K p) was the highest for fat (25.0) followed by small intestine (2.6), thyroid (2.0), and stomach (1.1). In contrast, for MBzP and MBuP, it was the highest for kidney (2.0 and 4.3, respectively) and liver (4.3 and 2.1, respectively) but was less than unity for all other tissues. The developed assay method and findings of this study may be useful to evaluate the exposure and toxic potential of BBP and its metabolites in risk assessment.

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“…Ozonation processes are especially effective since they may involve two major active species namely the molecular ozone and the hydroxyl radicals and both species can operate simultaneously [13]. The production of • OH radicals can be increased by the incorporation of UV radiation [14], H 2 O 2 [15] or increasing the pH [16]. It is necessary to highlight that both oxidizing species have very different behaviors.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Reactive Blue 19 dye removal using ozone and ozone/UV employing response surface methodology

2020

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This work reports the degradation of Reactive Blue 19 (RB19) dye using ozone and ozone/UV. The effects of operational parameters such as pH, ozone concentration and UV radiation were examined. A two factor with three levels factorial design was carried out and the interaction between variables was studied. Response surface methodology was applied in order to optimize ozone concentration, pH and UV radiation in terms of the half life time required for discoloration and/or mineralization of the solution. Equations of color and TOC half-life time with respect to operational conditions were determined. Contour plots and a desirability function were used to find the local points of optimization. Optimized reaction conditions were established as pH 8.26, UV radiation of 40 W and ozone concentration of 50 g Nm −3 . A specific experiment was carried out under the optimal conditions where RB19 half life time was 1.59 min and TOC half life time was 30.98 min, confirming the agreement between model and experimental results. The obtained results confirm ozonation as a promising alternative for treatment of wastewater with a high content of recalcitrant reactive dyes.

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Kinetics of the degradation of n-butyl benzyl phthalate using O3/UV, direct photolysis, direct ozonation and UV effects

Cited by 15 publications

References 31 publications

UV-Catalyzed Persulfate Oxidation of an Anthraquinone Based Dye

UV-Catalyzed Persulfate Oxidation of an Anthraquinone Based Dye

Sensitive liquid chromatography-tandem mass spectrometry method for the simultaneous determination of benzyl butyl phthalate and its metabolites, monobenzyl phthalate and monobutyl phthalate, in rat plasma, urine, and various tissues collected from a toxicokinetic study

Optimization of Reactive Blue 19 dye removal using ozone and ozone/UV employing response surface methodology

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