Treatment of wastewater contaminated with ionic dyes: Liquid-liquid extraction induced by reversed micelle followed by photodegradation

Bukman, Laís; Fernandes-Machado, Nádia Regina Camargo; Caetano, Wilker; Tessaro, André Luiz; Hioka, Noboru

doi:10.1016/j.seppur.2017.08.004

Cited by 21 publications

(9 citation statements)

References 22 publications

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“…However, due to the complexity of the structure and thermal stability of synthetic dyes in water, biological methods of treatment have been less successful [5]. In recent years, several physico-chemical methods have been reported for the treatment of wastewater containing dye, including forward and reverse osmosis [6, 7], coagulation [8], coagulation-flocculation [9], Fenton, Photo–Fenton and solar Fenton reactions [10, 11], electrocoagulation [12], chemical oxidation [13], solvent extraction [14], ion exchange [15] and adsorption [16]. Among the conventional methods, adsorption is a widely applicable and superior technique owing to the low cost of treatment and ease of design and operation; the method has rapid kinetics and is very effective for the treatment of effluents [17, 18].…”

Section: Introductionmentioning

confidence: 99%

Adsorption of Rhodamine B dye from aqueous solution onto acid treated banana peel: Response surface methodology, kinetics and isotherm studies

et al. 2019

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The adsorption of rhodamine B (RhB) using acid modified banana peels has been examined. Chemical characteristics of the adsorbents were observed in order to determine active functional groups. The major functional groups on the surface were OH, C = O, C = C and C-O-C. Interactions between operational parameters were studied using the central composite design (CCD) of response surface methodology (RSM). The predictions of the model output indicated that operational factors influenced responses at a confidence level of 95% (P<0.05). The optimum conditions for adsorption were pH 2 at a 0.2 g/L dose within 60 minutes of contact time. Isotherm studies were carried out using the optimized process variables. The data revealed that RhB adsorption fitted the Langmuir isotherm equation while the reduction of COD followed the Freundlich isotherm. Kinetic experiments fitted the pseudo second order model for RhB removal and COD reduction. The adsorption mechanism was not the only rate controlling step. Diffusion through the boundary layer described the pattern of adsorption.

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Section: Introductionmentioning

confidence: 99%

Adsorption of Rhodamine B dye from aqueous solution onto acid treated banana peel: Response surface methodology, kinetics and isotherm studies

et al. 2019

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“…e impact of the solution pH on the extracted dyes was studied. 0.5 N HCl and 0.5 N NaOH [15,16] 8.2 mM (in water at 25 °C) [17,23] solutions were used to change the pH values from 2 to 10. e extraction efficiency (E) and the partition coefficient (K) for dyes were calculated and given by the following equations [12,25]:…”

Section: Methods Of Extracting Dyementioning

confidence: 99%

“…e organic pollutants are separated from aqueous environments due to the effect of surfactants, using low-solubility compounds that have been solubilized in the organic solvent by reverse micelles [11]. RME occurs when a substrate in water-immiscible solvent is extracted from aqueous phase to the organic phase by reverse micelles as shown in Figure 1 [12]. Ethyl acetate, also known as acetic acid ethyl ester, acetic ester, and acetic ether, has a relative density of 0.902 g/cm 3 and has poor water solubility.…”

Section: Introductionmentioning

confidence: 99%

“…ree characteristics basically rely on the efficiency of the RME technique, the surfactants, the organic solvent, and the ionic residual in the water. e conditions that must be met for the organic solvent are that it must be low in cost, low in volatility, low in toxicity, and of easy reusability [12,21,22]. e objective of this research is to see if reverse micelles can be used to separate organic dyes from water using liquidliquid extraction.…”

Section: Introductionmentioning

confidence: 99%

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Separation of Some Anionic Dyes Using Reverse Micelles of CTAB and SDS as Efficient Surfactants Adsorbents from Aqueous Medium

Refay

Badawy

Hamada

et al. 2022

International Journal of Chemical Engineering

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Extractive removal of anionic dyes, namely, Color Index (CI) Reactive Blue 222 and Reactive Yellow 145, using reverse micelles based on liquid-liquid extraction (LLE) was carried out from aqueous solutions using different anionic and cationic surfactants (e.g., sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB), resp.), which dissolved in ethyl acetate as solvent. The reverse micelle principal acts on the dye encapsulated in the solvent in an aqueous micropool. The experiments were carried out by mixing in a simple mixer a given amount of dyes and surfactants dissolved in a solvent in an aqueous process. Due to gravity, the dye is separated from water after the solvent phase is separated from the aqueous phase, including dye encapsulated in reverse micelles. Under various experimental conditions, extraction efficiency was studied, including solution pH, extraction time, initial dye concentration, extractant concentration, temperature, stripping agent, and solvent reusability. Dyes extracted were stripped quantitatively with NaOH solution. Recovery of the solvent and the reuse of dyes and surfactants after extraction of dye molecules from reverse micelles surfactant core considered are very important from an economic point of view. The optimized conditions were 7 ± 0.2 solution pH, 9 × 10−2 mol/L extractant concentration, 1M NaOH stripping agent concentration, 60 min extraction time, 6 × 10−5 mol/L dye concentration, and 1 : 1 aqueous to organic (A/O) ratio. 87–93% of dyes were extracted at experimental optimum conditions.

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“…Special emphasis has been given to some recent applications of RME. Bukman et al, (2017) focused on the improvement of clarification of the wastewater effluent contaminated with dyes by liquid-liquid extraction induced by reverse micelle followed by phototreatment (64) . Methylene blue as model of cationic dye and sodium dodecyl sulphate as anionic surfactant in isoamyl alcohol (immiscible organic solvent toward water) were used.…”

Section: Reverse Micellar Extraction (Rme)mentioning

confidence: 99%

A Comprehensive Review on Liquid-Liquid Extraction Based Systems in Treatment of Textile Wastewater

Sivamani¹,

Manimaran²,

A³

et al. 2021

IJST

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Treatment of wastewater contaminated with ionic dyes: Liquid-liquid extraction induced by reversed micelle followed by photodegradation

Cited by 21 publications

References 22 publications

Adsorption of Rhodamine B dye from aqueous solution onto acid treated banana peel: Response surface methodology, kinetics and isotherm studies

Adsorption of Rhodamine B dye from aqueous solution onto acid treated banana peel: Response surface methodology, kinetics and isotherm studies

Separation of Some Anionic Dyes Using Reverse Micelles of CTAB and SDS as Efficient Surfactants Adsorbents from Aqueous Medium

A Comprehensive Review on Liquid-Liquid Extraction Based Systems in Treatment of Textile Wastewater

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