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@article{ART002220445},
author={Soheila Gholitabar and Hasan Tahermansouri},
title={Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound},
journal={Carbon Letters},
issn={1976-4251},
year={2017},
volume={22},
pages={14-24}

TY - JOUR
AU - Soheila Gholitabar
AU - Hasan Tahermansouri
TI - Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound
JO - Carbon Letters
PY - 2017
VL - 22
IS - null
PB - Korean Carbon Society
SP - 14
EP - 24
SN - 1976-4251
AB - Carboxylated multi-wall carbon nanotubes (MWCNTs-COOH) have been used as efficient adsorbents for the removal of picric acid from aqueous solutions under stirring and ultrasound conditions. Batch experiments were conducted to study the influence of the different parameters such as pH, amount of adsorbents, contact time and concentration of picric acid on the adsorption process. The kinetic data were fitted with pseudo-first order, pseudo-secondorder, Elovich and intra-particle diffusion models. The kinetic studies were well described by the pseudo-second-order kinetic model for both methods. In addition, the adsorption isotherms of picric acid from aqueous solutions on the MWCNTs were investigated using six two-parameter models (Langmuir, Freundlich, Tempkin, Halsey, Harkins-Jura, Fowler- Guggenheim), four three-parameter models (Redlich-Peterson, Khan, Radke-Prausnitz, and Toth), two four-parameter equations (Fritz-Schlunder and Baudu) and one five-parameter equation (Fritz-Schlunder). Three error analysis methods, correlation coefficient, chi-square test and average relative errors, were applied to determine the best fit isotherm. The error analysis showed that the models with more than two parameters better described the picric acid sorption data compared to the two-parameter models. In particular, the Baudu equation provided the best model for the picric acid sorption data for both methods.
KW - carbon nanotube;picric acid;kinetics;ultrasound;adsorption isotherms
DO -
UR -
ER -

Soheila Gholitabar and Hasan Tahermansouri. (2017). Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound. Carbon Letters, 22, 14-24.

Soheila Gholitabar and Hasan Tahermansouri. 2017, "Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound", Carbon Letters, vol.22, pp.14-24.

Soheila Gholitabar, Hasan Tahermansouri "Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound" Carbon Letters 22 pp.14-24 (2017) : 14.

Soheila Gholitabar, Hasan Tahermansouri. Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound. 2017; 22 14-24.

Soheila Gholitabar and Hasan Tahermansouri. "Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound" Carbon Letters 22(2017) : 14-24.

Soheila Gholitabar; Hasan Tahermansouri. Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound. Carbon Letters, 22, 14-24.

Soheila Gholitabar; Hasan Tahermansouri. Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound. Carbon Letters. 2017; 22 14-24.

Soheila Gholitabar, Hasan Tahermansouri. Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound. 2017; 22 14-24.

Soheila Gholitabar and Hasan Tahermansouri. "Kinetic and multi-parameter isotherm studies of picric acid removal from aqueous solutions by carboxylated multi-walled carbon nanotubes in the presence and absence of ultrasound" Carbon Letters 22(2017) : 14-24.