Micellar enhanced flocculation for the effective removal of reactive yellow 160 from synthetic textile effluent

Sultana, Hamadia; Usman, Muhammad; Mansha, Asim

doi:10.1016/j.eti.2021.101896

Cited by 10 publications

(4 citation statements)

References 39 publications

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“…It was previously reported that dyes have a stronger interaction with surfactants with longer alkyl chains [29,33]. On this ground, more researchers tended to use surfactants with higher surface activities to interact with dye molecules to form mixed micelles with larger sizes and then remove them by flocculation via varying solution conditions or membrane separation [17][18][19]45]. However, a very different finding in the current work was that RBB KN-R was directly precipitated by a surfactant with lower surface activity (DTAB).…”

Section: Simulations Of Interactions Of Rbb Kn-r With Dtab Ttab and Ctabmentioning

confidence: 60%

“…They achieved an impressive dye removal rate of 86%. A similar methodology was employed by Sultana et al [18] for the efficient elimination of reactive yellow 160. In both studies, surfactants played a crucial role in enhancing dye solubilization, while the use of flocculants was also necessary.…”

Section: Introductionmentioning

confidence: 99%

“…In Refs. [17][18][19], the elucidation of interactions between the chosen surfactant and dye molecules were well-documented. However, a comprehensive explanation of the specific surfactant characteristics conducive to dye precipitation is notably absent.…”

Section: Introductionmentioning

confidence: 99%

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Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Liu,

Chang,

et al. 2024

Molecules

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To develop a cost-effective method for the effective removal of reactive brilliant blue KN-R (RBB KN-R) from wastewater, we investigated the interactions between RBB KN-R and three cationic surfactants with different alkyl chain lengths, namely dodecyltrimethylammonium bromide (DTAB), tetradecyltrimethylammonium bromide (TTAB), and cetyltrimethylammonium bromide (CTAB). Employing a conductivity analysis, surface tension analysis, ultraviolet-visible spectrophotometry, and molecular dynamics simulation, we ascertained that RBB KN-R formed a 1:1 molar ratio dye–surfactant complex with each surfactant through electrostatic attraction. Notably, an augmentation in alkyl chain length correlated with increased binding strength between RBB KN-R and the surfactant. The resulting dye–surfactant complex exhibited heightened surface activity, enabling interactions through hydrophobic forces to generate dye–surfactant aggregates when the molar ratio was below 1:1. Within these mixed aggregates, self-assembly of RBB KN-R molecules occurred, leading to the formation of dye aggregates. Due to the improved hydrophobicity with increased alkyl chain length, TTAB and CTAB could encapsulate dye aggregates within the mixed aggregates, but DTAB could not. The RBB KN-R aggregates tended to distribute on the surface of the RBB KN-R-DTAB mixed aggregates, resulting in low stability. Thus, at a DTAB concentration lower than CMC, insoluble particles readily formed and separated from surfactant aggregates at an RBB KN-R and DTAB molar ratio of 1:4. Analyzing the RBB KN-R precipitate through scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) and measuring the DTAB concentration in the supernate revealed that, at this molar ratio, all RBB KN-R precipitated from the dye–surfactant mixed solution, with only 7.5 ± 0.5% of DTAB present in the precipitate. Furthermore, the removal ratio of RBB KN-R reached nearly 100% within a pH range of 1.0 to 9.0 and standing time of 6 h. The salt type and concentration did not significantly affect the precipitation process. Therefore, this simultaneous achievement of successful RBB KN-R removal and effective separation from DTAB underscores the efficacy of the proposed approach.

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Section: Simulations Of Interactions Of Rbb Kn-r With Dtab Ttab and Ctabmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

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Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Liu,

Chang,

et al. 2024

Molecules

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“…The textile industry has received signi cant attention due to the various types of dyes used, Containing signi cant and highly toxic metal complexes [1]- [4]. Dyes are not as it were broadly utilized within the material industry but too in other businesses such as paper, pharmaceuticals, nourishment, tannery, beauty care products, and more [5]. Around 70% of the 800,000 tons of colors delivered universally each year are azo colors [6].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Adsorption of Ketoprofen and Reactive Yellow 15 from Aqueous Solutions Using Silver Nanoparticle-Modified Luffa: Characterization, Optimization, and Reusability Studies

Tavassoli,

Cheraghi,

Etemadifar

et al. 2023

Preprint

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In the current work, luffa was modified with silver nanoparticles to prepare LF/AgNPs adsorbent for the elimination of ketoprofen and reactive yellow 15 (RY15) from aqueous media. Various characterization techniques, including FTIR, XRD, and SEM-EDS analyses, were employed to confirm the successful modification of LF/AgNPs. Several key parameters such as contact time, adsorbent dosage, concentration, pH, and agitation technique were fine-tuned to optimize the adsorption process. Ketoprofen removal was found to be most effective in weakly acidic conditions (pH=5), while reactive yellow 15 adsorption was enhanced in an acidic environment (pH=2). At 298 K, the highest adsorption capacities reached 56.88 mg/g for ketoprofen and 97.76 mg/g for reactive yellow 15. The adsorption of ketoprofen followed the Temkin isotherm model, indicating a chemisorption process (R2=0.997). Reactive yellow 15, however, adhered to the Freundlich isotherm model, suggesting multilayer adsorption due to uneven distribution of active sites (R2=0.987). Additionally, the kinetics of ketoprofen adsorption were best described by the Pseudo-first order model (R2=0.989), whereas the Pseudo-second order model provided the most accurate fit for reactive yellow 15 adsorption (R2=0.997). Importantly, the LF/AgNPs adsorbent displayed consistent performance over five consecutive reuse cycles, affirming its stability and efficacy in removing both contaminants. These findings underscore the exceptional potential of LF/AgNPs as a reliable adsorbent for the removal of reactive yellow 15 and ketoprofen from aqueous solutions.

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Evaluation of Methylene Blue Adsorption onto Lignocellulosic Biomass (Raw Rumex Crispus L. Stem): Characterization, Kinetics, and Isotherms

Kavcı

2023

Water Air Soil Pollut

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Micellar enhanced flocculation for the effective removal of reactive yellow 160 from synthetic textile effluent

Cited by 10 publications

References 39 publications

Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Role of Alkyl Chain Length in Surfactant-Induced Precipitation of Reactive Brilliant Blue KN-R

Enhanced Adsorption of Ketoprofen and Reactive Yellow 15 from Aqueous Solutions Using Silver Nanoparticle-Modified Luffa: Characterization, Optimization, and Reusability Studies

Evaluation of Methylene Blue Adsorption onto Lignocellulosic Biomass (Raw Rumex Crispus L. Stem): Characterization, Kinetics, and Isotherms

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