Oxidation of fast green FCF by the solar photo-Fenton process

Kumar, Anil; Paliwal, Mukesh; Ameta, Rameshwar; Ameta, Suresh C.

doi:10.1007/bf03246129

Cited by 14 publications

(7 citation statements)

References 14 publications

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“…The degradation of basic dyes by chemical oxidation has been widely tested in several laboratories. Examples of oxidants are: persulfate [10 -13], O 3 [14], UV/O 3 [15], activated O 2 [16], Fenton's reagent [17,18], photo Fenton [19], H 2 O 2 [20], and photodegradation using TiO 2 [21][22][23][24][25][26]. In recent years, the use of electrochemical technologies has shown a great interest because they offer effective means to solve environmental problems related to industrial processes, and are adaptable to a wide range of dyes [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Study of the Discoloration Rate of Rhodamine B as a Function of the Operating Parameters at Pt and BDD Electrodes

Mallah

Naoufal

Safa

et al. 2013

Port. Electrochim. Acta

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The chemical reaction of rhodamine B by electro-generated species using Pt and BDD electrodes was performed. The product(s) of this chemical reaction are related to the supporting electrolyte and electrolysis time. The rate of discoloration is affected by the current density, initial pH, temperature, and the nature of the supporting electrolyte. However, the initial dye concentration and the ionic strength did not show any significant effect on both electrodes. Discoloration of the dye and mineralization were not observed in presence of sulfate and nitrate with the Pt electrode, but occurred slowly with the BDD electrode. In the presence of KCl and KBr, the discoloration was very fast with both electrodes, and was accompanied with partial degradation. In the presence of KCl, the colorless rhodamine B solution turned rose after several hours of being set at rest.

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Section: Introductionmentioning

confidence: 99%

Study of the Discoloration Rate of Rhodamine B as a Function of the Operating Parameters at Pt and BDD Electrodes

Mallah

Naoufal

Safa

et al. 2013

Port. Electrochim. Acta

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“…Qualitative information related to the intermediates formed during the photodegradation was obtained from the absorbance spectrum in the region between 350 and 800 nm, whereas the quantitative information was obtained by calculating the decrease in the absorption intensity of FCF at a λ max of around 623 nm. 71,72 The changes in the FCF absorption spectra as a function of irradiation time were recorded using a UV-Vis spectrometer and are presented in Figure 7, which presents the UV-Vis spectra of FCF at 5-minute intervals over a 110-minute period recorded using a UV-Vis spectrophotometer in the presence of CS membrane ( Figure 7A), CS membrane containing CS-ZnO ( Figure 7B), and CS-ZnO/CuO membrane as photocatalysts ( Figure 7C). As can be seen in Figure 7A, the characteristic absorption peaks of FCF decreased until 35 minutes of exposure to solar light.…”

Section: Evaluation Of the Photocatalytic Performancementioning

confidence: 99%

Chitosan Membrane Embedded With ZnO/CuO Nanocomposites for the Photodegradation of Fast Green Dye Under Artificial and Solar Irradiation

Alzahrani

2018

Anal Chem�Insights

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Fast Green (FCF) dye is commonly used in both cytology and histology applications. Previous studies have found that it can cause mutagenic and tumorigenic effects in experimental human and animal populations. It can also be a source of skin, eye, respiratory, and digestive irritation. The purpose of this study was to examine the use of thin film membranes to degrade FCF. A thin film membrane of chitosan (CS) was fabricated and subsequently filled with zinc oxide nanoparticles (ZnO) or ZnO/CuO-heterostructured nanocomposites. The CS membrane was used as a matrix, and the nanomaterials were used as photocatalysts. The prepared membranes were characterised by four analytical techniques: atomic force microscopy, scanning electron microscopy, X-ray diffraction, and energy-dispersive X-ray analyses. The photocatalytic activity of the fabricated membranes was evaluated by performing experiments in which aqueous solutions of FCF dye that contained the fabricated membrane were irradiated with solar light or UV light. The photodegradation percentage was spectrophotometrically determined by monitoring the maximum wavelengths (λmax) of FCF at 623 nm for different irradiation times. The decolourisation percentages of the dye under solar light were 57.90% and 60.23% using the CS-ZnO and CS-ZnO/CuO membranes, respectively. When UV light irradiation was employed as the source of irradiation, the photodegradation percentages of FCF were 71.45% and 91.21% using the CS-ZnO and CS-ZnO/CuO membranes, respectively. These results indicated that the best photocatalytic system for the degradation of FCF dye was CS-ZnO/CuO membrane in combination with UV light irradiation. The study also found that it was easy to separate the prepared membranes after the reaction without the need for a centrifuge or magnet. The results demonstrate the potential for CS-ZnO and CS-ZnO/CuO membranes for use as effective sorbents during the process of photodegradation of harmful dyes within waste water recycling practices.

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“…Advanced oxidation processes (AOPs) are efficient water treatment methods utilizing reactive oxygen species generation. Some examples of frequently used and studied AOPs are TiO 2 /UV (Hupka et al 2006;Thiruvenkatachari et al 2008), H 2 O 2 , H 2 O 2 /UV, O 3 , O 3 /UV (Baus et al 2007;Souza et al 2016), Fe 2+ /H 2 O 2 , Fe 3+ /H 2 O 2 (Gaca et al 2005;Tong et al 2011;Khankhasaeva et al 2012), Fe 3+ /H 2 O 2 /UV (Kumar et al 2008;Diagne et al 2009;Li et al 2012b;Topac and Alkan 2016;Tsoumachidou et al 2016) and Fe 2+ /UV/S 2 O 8 2− (Khan et al 2013;Brienza et al 2014;Xue et al 2016). Unfortunately, in some cases, AOPs fail in formaldehyde elimination or even contributes to its generation (Can and Gurol 2003;Wert et al 2007;Trenholm et al 2008;Tripathi et al 2011;Li et al 2012a).…”

Section: Introductionmentioning

confidence: 99%

Studies on the formation of formaldehyde during 2-ethylhexyl 4-(dimethylamino)benzoate demethylation in the presence of reactive oxygen and chlorine species

Studziński

Gackowska

Przybyłek

et al. 2017

Environ Sci Pollut Res

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In order to protect the skin from UV radiation, personal care products (PCPS) often contain chemical UV-filters. These compounds can enter the environment causing serious consequences on the water ecosystems. The aim of this study was to examine, the effect of different factors, such as UV light, the presence of NaOCl and H2O2 on the formaldehyde formation during popular UV filter, 2-ethylhexyl 4-(dimethylamino)benzoate (ODPABA) demethylation. The concentration of formaldehyde was determined by VIS spectrophotometry after derivatization. The reaction mixtures were qualitatively analyzed using GC/MS chromatography. The highest concentration of formaldehyde was observed in the case of ODPABA/H2O2/UV reaction mixture. In order to describe two types of demethylation mechanisms, namely, radical and ionic, the experimental results were enriched with Fukui function analysis and thermodynamic calculations. In the case of non-irradiated system containing ODPABA and NaOCl, demethylation reaction probably proceeds via ionic mechanism. As it was established, amino nitrogen atom in the ODPABA molecule is the most susceptible site for the HOCl electrophilic attack, which is the first step of ionic demethylation mechanism. In the case of irradiated mixtures, the reaction is probably radical in nature. The results of thermodynamic calculations showed that abstraction of the hydrogen from N(CH3)2 group is more probable than from 2-ethylhexyl moiety, which indicates higher susceptibility of N(CH3)2 to the oxidation.Electronic supplementary materialThe online version of this article (doi:10.1007/s11356-017-8477-8) contains supplementary material, which is available to authorized users.

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Oxidation of fast green FCF by the solar photo-Fenton process

Cited by 14 publications

References 14 publications

Study of the Discoloration Rate of Rhodamine B as a Function of the Operating Parameters at Pt and BDD Electrodes

Study of the Discoloration Rate of Rhodamine B as a Function of the Operating Parameters at Pt and BDD Electrodes

Chitosan Membrane Embedded With ZnO/CuO Nanocomposites for the Photodegradation of Fast Green Dye Under Artificial and Solar Irradiation

Studies on the formation of formaldehyde during 2-ethylhexyl 4-(dimethylamino)benzoate demethylation in the presence of reactive oxygen and chlorine species

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