Adsorption isotherms and thermochemical data of FD&amp;C Red n° 40 binding by Chitosan

Piccin, Jeferson Steffanello; Dotto, Guilherme L.; Pinto, Luiz Antônio de Almeida

doi:10.1590/s0104-66322011000200014

Cited by 252 publications

(129 citation statements)

References 35 publications

(57 reference statements)

Supporting

Mentioning

118

Contrasting

Unclassified

Order By: Relevance

“…Langmuir, Freundlich, Redlich-Peterson, Temkin, Dubinin-Radushkevich, etc., that can be used for biomolecules, e.g. chitosan (Gottipati and Mishra, 2010;Kumar et al, 2010;Piccin et al, 2011), but the Sips model proved to be the best for vancomycin adsorption onto polymeric resin (Likozar et al, 2012).…”

Section: Theory and Calculationmentioning

confidence: 99%

Comparison of adsorption equilibrium and kinetic models for a case study of pharmaceutical active ingredient adsorption from fermentation broths: parameter determination, simulation, sensitivity analysis and optimization

Likozar

Senica²,

Pavko³

2012

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

-Mathematical models for a batch process were developed to predict concentration distributions for an active ingredient (vancomycin) adsorption on a representative hydrophobic-molecule adsorbent, using differently diluted crude fermentation broth with cells as the feedstock. The kinetic parameters were estimated using the maximization of the coefficient of determination by a heuristic algorithm. The parameters were estimated for each fermentation broth concentration using four concentration distributions at initial vancomycin concentrations of 4.96, 1.17, 2.78, and 5.54 g l −1 . In sequence, the models and their parameters were validated for fermentation broth concentrations of 0, 20, 50, and 100% (v/v) by calculating the coefficient of determination for each concentration distribution at the corresponding initial concentration. The applicability of the validated models for process optimization was investigated by using the models as process simulators to optimize the two process efficiencies.

show abstract

Section: Theory and Calculationmentioning

confidence: 99%

Comparison of adsorption equilibrium and kinetic models for a case study of pharmaceutical active ingredient adsorption from fermentation broths: parameter determination, simulation, sensitivity analysis and optimization

Likozar

Senica²,

Pavko³

2012

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…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.

View full text Add to dashboard Cite

-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.

show abstract

“…However, the second part (high initial concentration) includes lower interaction energy in which the weak van-der Waals forces were dominated. As a result, the adsorption energy broke down into two parts 41 . According to III compound, the steric hindrance weaken the electrostatic interaction in the first part in addition to the weak van-der Waals forces at the second one; so that the adsorption energy for III appeared in one line since there was no difference in the adsorption energy between the two parts.…”

Section: Temkin Isotherm Modelmentioning

confidence: 99%

Adsorption Behavior of some N-alkyl Pyridinium Salts from Aqueous Solution on Amberlite-IR 120 H+ resin

2018

View full text Add to dashboard Cite

The effect of Amberlite-IR 120 H + resin to remove some organic compounds (N-alkyl pyridinium salts) from aqueous solutions at certain conditions was investigated. The effect of resin dosage, contact time, adsorbate concentration, ionic strength and solution temperature on the adsorption efficiency was examined. The experimental data collected generally proved that the adsorption efficiency decreased as the alkyl chain increased. The thermodynamic equilibrium parameters of the adsorption processes were evaluated and showed that the adsorption process is spontaneous, disordered and exothermic. Langmuir, Freundlich, Temkin and Dubinin-Radushkevich (D.R) isotherm models were applied based on the batch method. Freundlich, Temkin and D. R gave bilinear segments model based on the adsorbate initial concentrations except that for compound III where it gave straight of one segment for Temkin adsorption isotherm. Overall, Amberlite-IR 120 H + resin is effective in removing some N-alkyl pyridinium salts from an aqueous solution.

show abstract

Adsorption isotherms and thermochemical data of FD&C Red n° 40 binding by Chitosan

Cited by 252 publications

References 35 publications

Comparison of adsorption equilibrium and kinetic models for a case study of pharmaceutical active ingredient adsorption from fermentation broths: parameter determination, simulation, sensitivity analysis and optimization

Comparison of adsorption equilibrium and kinetic models for a case study of pharmaceutical active ingredient adsorption from fermentation broths: parameter determination, simulation, sensitivity analysis and optimization

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

Adsorption Behavior of some N-alkyl Pyridinium Salts from Aqueous Solution on Amberlite-IR 120 H+ resin

Contact Info

Product

Resources

About