An analytical overview of processes for removing organic dyes from wastewater effluents

Fernández, Cristina; Larrechi, M. Soledad; Callao, M. Pilar

doi:10.1016/j.trac.2010.07.011

Cited by 213 publications

(93 citation statements)

References 68 publications

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“…These hydroxyl radicals are highly reactive with very high oxidation potential and can oxidize the dyes completely. It is a fast, clean and destructive method of dye degradation in which no secondary waste is generated (Fernandez et al 2010). …”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and photocatalytic activity of PVP stabilized ZnO and modified ZnO nanostructures

et al. 2013

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In the present study, ZnO nanostructures have been successfully synthesized by hydrothermal, sonochemical and precipitation methods using polyvinyl pyrrolidone (PVP) as the capping agent. The ZnO nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), UV-Visible spectroscopy and photoluminescence (PL) techniques. The XRD results revealed the hexagonal wurtzite structure of the ZnO nanostructures for all the samples. Furthermore, the morphology of the ZnO particles was obtained from FESEM micrographs. Particles prepared by hydrothermal method were found to be rice grain shaped and that prepared by precipitation and sonochemical methods were spherical shaped. Sunlight driven photocatalytic degradation of methylene blue (MB) was studied for ZnO nanostructures synthesized by various methods. The ZnO nanostructures were further decorated with Ag nanoparticles to enhance its dye degradation efficiency. The Ag decorated ZnO nanoparticles exhibited a higher degradation rate as compared to pure ZnO nanoparticles which was independent of pH. Since this process of dye degradation relies on the degradation of dye due to oxidation by highly reactive hydroxyl radicals, there are many factors which affect the efficiency of this process. Hence a study was conducted on the effect of various parameters on ZnO viz amount of catalyst, reaction pH and concentration of MB dye.

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Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and photocatalytic activity of PVP stabilized ZnO and modified ZnO nanostructures

et al. 2013

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“…Several conventional methods are available for the treatment and decontamination of dyes including physical, chemical and biological methods such as ozonation, photocatalysis, chemical oxidation, membrane filtration, flotation, coagulation, aerobic and anaerobic microbial degradation, enzyme degradation and adsorption [8,9]. However, most of them are considered ineffective for handling colored effluents due to chemical stability and low biodegradability of most dyes.…”

Section: Introductionmentioning

confidence: 99%

Removal of basic dyes in binary system by adsorption using rarasaponin–bentonite: Revisited of extended Langmuir model

Kurniawan

Sutiono

Indraswati

et al. 2012

Chemical Engineering Journal

104

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“…Nevertheless, the real effect of each factor is difficult to predict because it depends on the range of factor values studied (domain) and on the values of other factors that could have synergistic effects on the factor considered. Table 3 shows the relationship between the removal techniques and the most important factors they are affected by [39]. The use of experimental designs to optimize processes for removing dyes is on the rise.…”

Section: Optimization Of Dye Removalmentioning

confidence: 99%

Simultaneous Determination of Organic Dyes Using Second-Order Data

Callao

Larrechi

2015

Data Handling in Science and Technology

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An analytical overview of processes for removing organic dyes from wastewater effluents

Cited by 213 publications

References 68 publications

Synthesis, characterization and photocatalytic activity of PVP stabilized ZnO and modified ZnO nanostructures

Synthesis, characterization and photocatalytic activity of PVP stabilized ZnO and modified ZnO nanostructures

Removal of basic dyes in binary system by adsorption using rarasaponin–bentonite: Revisited of extended Langmuir model

Simultaneous Determination of Organic Dyes Using Second-Order Data

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