TiO2/clay as a heterogeneous catalyst in photocatalytic/photochemical oxidation of anionic reactive blue 19

Hadjltaief, Haithem Bel; Gálvez, María Elena; Zina, Mourad Ben; Costa, Patrick Da

doi:10.1016/j.arabjc.2014.11.006

Cited by 74 publications

(33 citation statements)

References 40 publications

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“…Among the anthropogenic activities that have contributed to the degradation of water quality, industrial activity is undoubtedly one of the main sources of pollution 1,2 . Synthetic dyes are extensively used in various textures, in the production of leather, cosmetics, paper, food, and pharmaceuticals, among others 3 .…”

Section: Introductionmentioning

confidence: 99%

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TiO2 Immobilized on Fibrous Clay as Strategies to Photocatalytic Activity

et al. 2020

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TiO 2 immobilized in Sepiolite (TiO 2 /Sep) was successfully prepared by the sol-gel technique, with titanium isopropoxide as the precursor for the formation of TiO 2 in the anatase phase calcined at 400 °C. The prepared samples were characterized by X-ray diffraction, Fourier Transform Infrared spectroscopy, Scanning Electron Microscopy coupled to energy dispersive spectroscopy, and thermogravimetric analysis. The results showed that TiO 2 /Sep structure was identified in all characterizations, showing the specific peaks, bands, mass loss, and morphology after the impregnation process. Photocatalytic experiments were performed under UV irradiation with various photocatalyst concentrations and pH effects in the reaction. The prepared samples presented 72% photocatalytic efficiency for eosin (EA) dye discoloration after 150 min under UV light. This efficiency was attributed to the radicals generated from the TiO 2 and the high specific surface area, showing that TiO 2 /Sep is promising candidate in the degradation of organic pollutants.

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Section: Introductionmentioning

confidence: 99%

“…Among photochemical AOPs, photocatalysis is an emerging technology for the degradation of organic pollutants 13 . There are several advantages over competing processes, such as complete mineralization, ambient temperature and pressure conditions, and, above all, a reduction in environmental impact for solid waste disposal 3,14,15 .…”

Section: Introductionmentioning

confidence: 99%

TiO2 Immobilized on Fibrous Clay as Strategies to Photocatalytic Activity

et al. 2020

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“…Photocatalytic proceses 60 moreover allow full water decontamination under relative mild operation conditions (Bel 61 Hadjltaief et al 2014b). 62…”

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confidence: 99%

Photocatalytic decolorization of cationic and anionic dyes over ZnO nanoparticle immobilized on natural Tunisian clay

Hadjltaief

Ameur

Costa

et al. 2018

Applied Clay Science

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127

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. Photocatalytic decolorization of cationic and anionic dyes over ZnO nanoparticle immobilized on natural Tunisian clay. Applied Clay Science, Elsevier, 2018Elsevier, , 152, pp.148 -157. 10.1016Elsevier, /j.clay.2017 In the present work we describe a simple and low-cost method for the decolorization of textile 23 dyeing and printing wastewaters, using ZnO as photocatalyst supported on natural Tunisian clay 24 (ZnO/Clay). This composite ZnO/Clay material was synthesized through a sol-gel method. X-25 ray diffraction (

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“…The remaining dye concentration was measured using a UV/Vis spectrophotometer (Optima SP-3000 Plus model, Japan) at 592 nm. The amount of dye adsorbed at equilibrium time (q e ) and dye removal efficiency (E) were respectively calculated using equations (1) and 2…”

Section: Methodsmentioning

confidence: 99%

“…The dye is one of the most important pollutants in industrial wastewater that is widely used in industrial sectors such as textile, leather, cosmetics, paper making, food processing and pharmaceutical industries (1,2). Reactive dyes are water-soluble and anionic that are largely used in the textile industry.…”

Section: Introductionmentioning

confidence: 99%

Study of the effectiveness of the third generation polyamideamine and polypropylene imine dendrimers in removal of reactive blue 19 dye from aqueous solutions

Sadeghi

Raki

Amini

et al. 2018

Environ Health Eng Manag

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Background: Dye and colored materials cause health risks in water and therefore, must be removed from water supplies and wastewater. The aim of this study was to evaluate the effectiveness of the third generation poly(amidoamine) (PAMAM) and poly (propylene imine) dendrimers (PPI-G3) in the removal of reactive blue 19 (RB19) dye from aqueous solutions and determine the optimum conditions for the removal. Methods: This study was performed in a laboratory and batch scale. In this study, synthetic wastewater was examined with three different concentrations of RB19 (25, 50, and 100 mg/L), different pHs (3, 7, and 10), various amounts of dendrimer (0.4, 0.8, 1.2, and 1.6 g/L), and at different times (15, 30, and 60 minutes) during the adsorption process. The remaining amount of dye was measured by spectrophotometer at 592 nm wavelength. Langmuir and Freundlich isotherms were also tested. Results: The results showed that by increasing the reaction time and adsorbent dosage, the rate of dye removal increased while by increasing the initial dye concentration and pH, the dye removal efficiency was significantly decreased. In this study, with increase of pH from 3 to 10, dye removal efficiency at a concentration of 25 mg/L, decreased from 72% to 20% and 88% to 17% by PAMAM and PPI dendrimers, respectively. Excel software was used for data analysis. Conclusion: Both adsorbents had a good dye removal efficiency, but PPI dendrimer was more effective in removing RB19. Adsorption data followed the Langmuir isotherm.

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TiO2/clay as a heterogeneous catalyst in photocatalytic/photochemical oxidation of anionic reactive blue 19

Cited by 74 publications

References 40 publications

TiO2 Immobilized on Fibrous Clay as Strategies to Photocatalytic Activity

TiO2 Immobilized on Fibrous Clay as Strategies to Photocatalytic Activity

Photocatalytic decolorization of cationic and anionic dyes over ZnO nanoparticle immobilized on natural Tunisian clay

Study of the effectiveness of the third generation polyamideamine and polypropylene imine dendrimers in removal of reactive blue 19 dye from aqueous solutions

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