Cationic Surfactant-modified Clay as an Adsorbent for the Removal of Synthetic Dyes from Aqueous Solutions

Biglari, Hamed; RodríguezíCouto, Susana; Khaniabadi, Yusef Omidi; Nourmoradi, Heshmatollah; Khoshgoftar, Mohammad; Amrane, Abdeltif; Vosoughi, Mehdi; Esmaeili, Shirin; Heydari, Rouhollah; Mohammadi, Mohammad Javad; Rashidi, Rajab

doi:10.1515/ijcre-2017-0064

Cited by 35 publications

(20 citation statements)

References 44 publications

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“…where K id (g mg −1 min −1/2 ) is the intraparticle diffusion kinetic model rate constant and C (mg g −1 ) is associated with boundary layer thickness. C C andK id K id are obtained via the y-intercept and slope of q t q t vs. t 1/2 t 1/2 , respectively (Basiri et al, 2015).…”

Section: Adsorption Kineticsmentioning

confidence: 99%

“…New adsorbents with better functionality for the removal of environmental pollutants have drawn attention over the recent years (Nourmoradi et al, 2015;Zhao and Vance, 1998). One of these adsorbents is clay which possesses high surface area, cost efficiency, low ecotoxicity, high biocompatibility, and high adsorption rates (Biglari et al, 2018;Nourmoradi et al, 2012bNourmoradi et al, , 2016. Clay, as a natural adsorbent, can be used for the removal of volatile chlorinated pollutants, including TCE, from aquatic solutions (Kowalska et al, 1994;Lu et al, 2011;Zhao and Vance, 1998).…”

Section: Introductionmentioning

confidence: 99%

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Removal of Trichloroethylene by Clay Modified with Cationic Surfactant in Aqueous Solutions: Equilibrium, Kinetic, and Thermodynamic Study

Mohammadi‐Moghadam

Abbas

Farhadkhani

et al. 2020

J Surfact & Detergents

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Trichloroethylene (TCE) is commonly found in ground water, and it may serve as a major source of many types of cancers such as kidney, liver, lymphatic glands, and spinal cord. In the present research, TCE uptake from aqueous media by montmorillonite (Mt) modified by tetradecyl trimethyl ammonium bromide (TTAB) surfactant was explored. Firstly, the characteristics of raw and modified montmorillonite (raw-Mt and TTAB-Mt) were analyzed by SEM, FTIR, XRD, and XRF instruments. Then, the sorption process was evaluated as a function of different factors such as surfactant loading rate, pH, ionic strength, contact time, sorbent dosage, TCE concentration, temperature, and regeneration agent. The maximum TCE sorption by the modified clay was obtained at surfactant loading rate of 120% cation exchange capacity of the clay. The maximum removal efficiency of TCE by the modified clay was 99.6% at pH 5 and 30 min contact time. The findings also exhibited that the isotherm and kinetic sorption followed the Freundlich and pseudo-second-order models, respectively. It can be concluded that TTAB-Mt, as a cheap, abundant, non-toxic, and environmental friendly adsorbent can be considered to remove TCE in aqueous phase.

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Section: Adsorption Kineticsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Removal of Trichloroethylene by Clay Modified with Cationic Surfactant in Aqueous Solutions: Equilibrium, Kinetic, and Thermodynamic Study

Mohammadi‐Moghadam

Abbas

Farhadkhani

et al. 2020

J Surfact & Detergents

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“…where q t and q e are the sorption capacity at any time t and equilibrium (mg/g), respectively, and k 1 is the rate constant of this equation (1/min). The linear form of the pseudosecond-order rate equation is expressed as follows [34]:…”

Section: Kinetic Studiesmentioning

confidence: 99%

Adsorption of Basic Violet 16 dye from aqueous solution onto mucilaginous seeds of Salvia sclarea: kinetics and isotherms studies

Afshin¹,

Rashtbari²,

Shirmardi³

et al. 2019

Desalination and Water Treatment

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a b s t r a c tThe Salvia sclarea seeds (SSS) were used as adsorbent for the removal of Basic Violet 16 (BV 16) dye from aqueous solutions. The structure and surface characteristics of the SSS were investigated by field emission scanning electron microscopy, Fourier transform infrared spectroscopy, Brunauer-Emmett-Teller and pH point of zero charge (pH pzc ) procedures. The effect of SSS dosage, pH of the solution, contact time and initial concentration of BV 16 dye on its removal was elucidated. The experimental data were analyzed by the Langmuir, Freundlich and Temkin isotherm models. The adsorption isotherm data were fitted well to Langmuir isotherm and the monolayer adsorption capacity was found to be 19.80 mg/g. The kinetic data obtained at different concentrations have been analyzed using a pseudo-first-order, pseudo-second-order equation. The kinetic studies showed that the pseudo-second-order kinetic model better described the adsorption of BV 16 dye onto the SSS. The findings reveal the feasibility of the SSS to be used as a potential and low-cost adsorbent in water and waste water industry for the removal of various pollutants, more specifically cationic dyes.

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“…Therefore, it is highly important to remove azo dyes from wastewater effluents before discharge into water bodies. Today, the use of adsorbents has increased for removing dyes from the wastewater [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Comparison of modified boehmite nanoplatelets and nanowires for dye removal from aqueous solution

Kamari¹,

Shafiee²,

Salimi³

et al. 2019

Desalination and Water Treatment

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a b s t r a c tIn this study, boehmite (-AlOOH) nanoplatelets and nanowires were synthesized at a pH of 5 and 12, respectively, modified with sulfonic acid (-AlOOH-SA5), (-AlOOH-SA12), and were used to adsorb eriochrome black T (EbT) dye solutions. Transmission electron microscopy, scanning electron microscopy, Fourier-transform infrared spectroscopy and X-ray diffraction were used to characterize the prepared nanoplatelets and nano wires. The effect of many parameters including initial concentration, pH and contact time was investigated. Values of 212.76 and 116.28 mg g -1 were, respectively, obtained for AlOOH-SA5 and AlOOH-SA12 for the adsorption maximum of EbT. Compared between two structures, the results indicated that the optimum conditions for 100 mg L -1 EbT solution were pH of 3 and 0.5 g L -1 AlOOH-SA5 as well as pH of 3 and 1 g L -1 AlOOH-SA12. Results of adsorption isotherms and adsorption kinetics indicated which they better matched by the Langmuir isotherm and also the adsorption kinetics better described by the pseudo-second-order model. Thermodynamic parameters have been measured, and results indicate that the adsorption process was spontaneous and exothermic for AlOOH-SA12 and nonspontaneous and endothermic for AlOOH-SA5. Finally, AlOOH-SA5 is a suitable adsorbent than that of AlOOH-SA12 and can be used for dye removal in wastewater treatment processes.

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Cationic Surfactant-modified Clay as an Adsorbent for the Removal of Synthetic Dyes from Aqueous Solutions

Cited by 35 publications

References 44 publications

Removal of Trichloroethylene by Clay Modified with Cationic Surfactant in Aqueous Solutions: Equilibrium, Kinetic, and Thermodynamic Study

Removal of Trichloroethylene by Clay Modified with Cationic Surfactant in Aqueous Solutions: Equilibrium, Kinetic, and Thermodynamic Study

Adsorption of Basic Violet 16 dye from aqueous solution onto mucilaginous seeds of Salvia sclarea: kinetics and isotherms studies

Comparison of modified boehmite nanoplatelets and nanowires for dye removal from aqueous solution

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