Removal of Methyl Orange by Modified Halloysite Nanotubes

Liu, Ruichao; Fu, Kai‐Yuan; Zhang, Bing; Mei, Dandan; Zhang, Haoqin; Liu, Jindun

doi:10.1080/01932691.2011.579855

Cited by 47 publications

(19 citation statements)

References 26 publications

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“…Equilibrium time is one of the most important parameters in the design of economical wastewater treatment systems [43]. The results show (Fig.…”

Section: Effect Of Adsorbent Dosagementioning

confidence: 98%

Removal of methyl orange from aqueous solution via adsorption on cork as a natural and low-coast adsorbent: equilibrium, kinetic and thermodynamic study of removal process

Krika¹,

Benlahbib²

2015

Desalination and Water Treatment

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In this study, the cork powder was used as adsorbent to remove methyl orange (MO) from aqueous solutions by adsorption. Batch experiments were conducted to study the effect of reaction parameters on the adsorption of the dye such as: contact time, initial concentrations of solution, adsorbent dosage, solution pH, and temperature; consequently, optimum condition of adsorption was obtained. The surface properties and structure of cork were measured by some techniques including: Scanning electron microscope, Fourier transform infrared spectrometry, point of zero charge, and Boehm titration method. Adsorption capacity of cork for MO is 16.66 mg g −1 at 298 K under the optimum condition of pH of 2, cork dosage of 5.00 g l −1 , particle size of d<0.08 mm, and contact time of 240 min. The kinetic data obtained from different experiments were analyzed using three kinetic models namely pseudo-firstorder, pseudo-second-order, and Elovich kinetics models. Among the kinetics models studied, the pseudo-second-order model was the best applicable model to describe the adsorption of MO onto cork. Freundlich and Langmuir models were used to analyze the obtained experimental data. In comparison, Langmuir model was understood to be a better fit for the experimental data than Freundlich model. The value of Gibbs free energy of adsorption (ΔG˚) was found to be −14.96 kJ mol −1 ; the negative value indicated the spontaneity of the adsorption process of MO onto cork. The values of (ΔH˚) and (ΔS˚) were found to be −11.71 kJ mol −1 and −10.93 J mol −1 K −1 , respectively. The thermodynamics parameters indicated that the adsorption of MO onto cork was spontaneous and exothermal.

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“…Equilibrium time is one of the most important parameters in the design of economical wastewater treatment systems [43]. The results show (Fig.…”

Section: Effect Of Adsorbent Dosagementioning

confidence: 98%

Removal of methyl orange from aqueous solution via adsorption on cork as a natural and low-coast adsorbent: equilibrium, kinetic and thermodynamic study of removal process

Krika¹,

Benlahbib²

2015

Desalination and Water Treatment

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“…The substitutions of Al 3þ for Si 4þ in the tetrahedral layer and Mg 2þ or Zn 2þ for Al 3þ in the octahedral layer result in a net negative surface charge ion in water which causes the repulsion interaction with anionic dyes. [29][30][31][32][33] More recently, textile chemists have been interested in the application of clay for coating cotton fiber to decrease its flame ability, thermal degradation and wrinkle ability properties. [34][35][36] However, to the best of our knowledge, treatment of wool with clay has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Effect of Colloidal Dispersion of Clay on Some Properties of Wool Fiber

Gashti

2013

Journal of Dispersion Science and Technology

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This work was carried out to characterize the changes induced on wool fiber by clay treatment. Technical measurements were studied including Fourier-transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermal degradation analysis (TGA), scanning electron microscopy (SEM), moisture regain measurement (MRM), and tensile strength test (TST). The intensity of major peaks in FTIR spectra of the clay treated sample is in favor of chemical changes of the polypeptide functional groups. DSC results indicated that clay treatment of wool enhances heat and thermal barrier properties of fiber. TGA results stated lower thermal degradation of clay treated wool compared with untreated one. One of the main advantages of clay application on wool could be its positive effect on the moisture absorption of wool.

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“…The Langmuir isotherm is valid for monolayer sorption onto a surface containing a finite number of sorption sites that are identical and energetically equivalent. The linearized Langmuir isotherm can be expressed by the following equation:…”

Section: Resultsmentioning

confidence: 99%

Removal and Spectrophotometric Determination of Anionic Dye Using a Polymeric Nanocomposite

Ali

El‐Sheikh

2017

J Chinese Chemical Soc

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Removal and spectrophotometric determination of trace amounts of methyl orange (MO) in tap and Nile water using silver nanoparticles supported over polyurethane foam were successfully carried out. Sorption isotherms, kinetics, thermodynamics, desorption, and nanocomposite reusability were investigated. Sorbed MO was desorbed and determined spectrophotometrically. Good recovery of the dye was obtained, indicating excellent performance of the proposed method for MO determination.

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Removal of Methyl Orange by Modified Halloysite Nanotubes

Cited by 47 publications

References 26 publications

Removal of methyl orange from aqueous solution via adsorption on cork as a natural and low-coast adsorbent: equilibrium, kinetic and thermodynamic study of removal process

Removal of methyl orange from aqueous solution via adsorption on cork as a natural and low-coast adsorbent: equilibrium, kinetic and thermodynamic study of removal process

Effect of Colloidal Dispersion of Clay on Some Properties of Wool Fiber

Removal and Spectrophotometric Determination of Anionic Dye Using a Polymeric Nanocomposite

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