Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima

Bangash, F. K.; Alam, Sultan

doi:10.1590/s0104-66322009000200005

Cited by 26 publications

(9 citation statements)

References 15 publications

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“…Also, dyes can be effectively removed by an adsorption process in which dissolved dye compounds attach themselves to the surface of adsorbents. Various adsorbents such as: activated carbon (Khaled et al, 2009;Bangash and Alam, 2009;Schimmel et al, 2010), flay ash (Lin et al, 2008), sawdust (Bello et al, 2010), lignite (Pentari et al, 2009), bentonite (Bulut et al, 2008), sepiolite (Dogan et al, 2007), montmorillonite , polymers (Kim and Guiochon, 2005), resin (Coşkun, 2011), zeolite (Mesko et al, 2001), macroporous hydrogel (Li et al, 2010), orange peel (Mafra et al, 2013), chitosan (Piccin et al, 2011), etc. have been widely studied for dye removal from aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Investigation of adsorption of the dyestuff astrazon red violet 3rn (basic violet 16) on montmorillonite clay

Fìl

Yılmaz

Bayar

et al. 2014

Braz. J. Chem. Eng.

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-In this study, color removal by absorption from synthetically prepared wastewater was investigated using montmorillonite clay by adsorption. As dyestuff Astrazon Red Violet 3RN (Basic Violet 16) was used. Experimental parameters selected were pH, temperature, agitation speed, initial dyestuff concentration, adsorbent dosage and ionic strength. It was established that adsorption rate increased with increasing pH, temperature, dye concentration and agitation speed, but decreased with increased ionic strength and adsorbent dosage. Adsorption equilibrium data obtained by a series of experiments carried out in a water bath were employed with common isotherm equations such as Langmuir, Freundlich, Temkin, Elovich and Dubinin-Radushkevich. It was found that the Langmuir equation appears to fit the equilibrium data better than the other models. Furthermore, the fit of the kinetic data to common kinetic models such as the pseudofirst-order, second-order, Elovich and intraparticle diffusion models was tested to elucidate the adsorption mechanism. Kinetic data conformed to the pseudo-second-order model, indicating chemisorptions. In addition, the thermodynamic parameters activation energy, Ea, enthalpy ΔH*, entropy, ΔS*, and free energy change, ΔG*, were calculated. The values of the calculated parameters indicated that physical adsorption of ARV on the clay was dominant and that the adsorption process was endothermic.

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Section: Introductionmentioning

confidence: 99%

Investigation of adsorption of the dyestuff astrazon red violet 3rn (basic violet 16) on montmorillonite clay

Fìl

Yılmaz

Bayar

et al. 2014

Braz. J. Chem. Eng.

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“…Owing to its structural characteristics, specifically its large surface area and high pore distribution, activated carbon is a highly efficient adsorbent (Bangash and Alam, 2009).…”

Section: Introductionmentioning

confidence: 99%

Adsorption of turquoise blue QG reactive bye commercial activated carbon in batch reactor: kinetic and equilibrium studies

Schimmel

Fagnani

Santos

et al. 2010

Braz. J. Chem. Eng.

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-The adsorption of reactive turquoise blue QG dye on commercial activated carbon was investigated in a batch reactor to obtain isotherm and kinetic data under different experimental conditions. The adsorbent was characterized by a FTIR method to analyze surface area and pH PZC and to identify functional groups. Experiments were conducted to obtain equilibrium data at 30°C, with the pH effect being assayed in the range of 2 to 8. Experiments were then carried out under the optimal pH condition for dye removal to obtain equilibrium data at 30°C, 45°C and 60°C. Adsorption isotherm models were used to correlate the equilibrium data. Maximum dye removal capacity was observed at a pH of 2 and temperature of 30°C. The kinetic experiments were carried out at a pH of 2 and at three different temperatures: 30°C, 45°C and 60°C. Pseudo-second-order models were used to describe the kinetics of dye adsorption.

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“…These are the pseudo-first-order equation, the pseudo-second-order equation, the equation of Elovich and intraparticules diffusion model. These models use the following linearized relationship [12].…”

Section: Rate Of Metal Ion Adsorptionmentioning

confidence: 99%

Study of Agar Proportions Effect on a Gamma Ray Synthesized Hydrogel

Ammar¹,

Saied²,

Mejri³

et al. 2016

JMSE-A

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Abstract:In this study, we aimed to identify the effect of agar proportion on the synthesized superabsorbent properties based on PVP (Polyvinyl pyrrolidone), poly (ethylene glycol) (PEG) and agar. In a first stage, the study of swelling and deswelling behavior of synthesized hydrogel was done. It was proved that agar acts as a crosslinking inhibitor since it competes with free radicals. The pH versus swelling time was studied. The polymer was characterized by Fourier transform infrared spectra analysis and X-ray Diffraction. The removal of Cu(II) from aqueous solution by the prepared PVP/PEG/agar hydrogel was studied. Also, the influences of pH and contact time were investigated throughout adsorption experiments. The maximum retention capacity was found to be 36.5 mg g -1 for the hydrogel containing 1% of agar. The kinetic parameters were calculated from the experimental data and it was shown that they fit well with pseudo-second-order kinetic model.

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Adsorption of acid blue 1 on activated carbon produced from the wood of Ailanthus altissima

Cited by 26 publications

References 15 publications

Investigation of adsorption of the dyestuff astrazon red violet 3rn (basic violet 16) on montmorillonite clay

Investigation of adsorption of the dyestuff astrazon red violet 3rn (basic violet 16) on montmorillonite clay

Adsorption of turquoise blue QG reactive bye commercial activated carbon in batch reactor: kinetic and equilibrium studies

Study of Agar Proportions Effect on a Gamma Ray Synthesized Hydrogel

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