Preparation of bio-based porous carbon by microwave assisted phosphoric acid activation and its use for adsorption of Cr(VI)

Vinod Kumar Gupta; Deepak Pathania; Shikha Sharma; Pardeep Singh

doi:10.1016/j.jcis.2013.03.020

Preparation of bio-based porous carbon by microwave assisted phosphoric acid activation and its use for adsorption of Cr(VI)

Vinod Kumar Gupta^*
, Deepak Pathania
, Shikha Sharma
, Pardeep Singh

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

122 Scopus citations

Abstract

Ficus carica fiber based activated carbon (FCAC) was used as a potential adsorbent for Cr(VI) removal from aqueous system. The adsorbent was prepared by carbonization of F. carica fiber followed by H₃PO₄ activation under microwave radiations. The activated carbon was characterized using scanning electron microscopy and Fourier transformer infrared spectroscopy. The adsorption data were well studied for adsorption isotherms, kinetics models, and thermodynamics. Adsorption of chromium ion followed the second-order kinetics and best fitted the Langmuir adsorption isotherms. The maximum adsorption capacity of Cr(VI) onto FCAC was 44.84mg/g. The calculated values of thermodynamic parameters like enthalpy change (δH°), entropy change (δS°), and free energy change (δG°) were found to be 7.85kJ/mol, 69.17J/molK, and -13.11kJ/mol, respectively. Adsorption process was spontaneous and endothermic in nature.

Original language	English
Pages (from-to)	125-132
Number of pages	8
Journal	Journal of Colloid and Interface Science
Volume	401
DOIs	https://doi.org/10.1016/j.jcis.2013.03.020
State	Published - 1 Jul 2013
Externally published	Yes

Keywords

Adsorption
Cr(VI)
Ficus carica fiber
Kinetics
Microwave-activation
Wastewater

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Colloid and Surface Chemistry

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10.1016/j.jcis.2013.03.020

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@article{ea604fe66d2649bfa9f479a3d18a30c6,

title = "Preparation of bio-based porous carbon by microwave assisted phosphoric acid activation and its use for adsorption of Cr(VI)",

abstract = "Ficus carica fiber based activated carbon (FCAC) was used as a potential adsorbent for Cr(VI) removal from aqueous system. The adsorbent was prepared by carbonization of F. carica fiber followed by H3PO4 activation under microwave radiations. The activated carbon was characterized using scanning electron microscopy and Fourier transformer infrared spectroscopy. The adsorption data were well studied for adsorption isotherms, kinetics models, and thermodynamics. Adsorption of chromium ion followed the second-order kinetics and best fitted the Langmuir adsorption isotherms. The maximum adsorption capacity of Cr(VI) onto FCAC was 44.84mg/g. The calculated values of thermodynamic parameters like enthalpy change (δH°), entropy change (δS°), and free energy change (δG°) were found to be 7.85kJ/mol, 69.17J/molK, and -13.11kJ/mol, respectively. Adsorption process was spontaneous and endothermic in nature.",

keywords = "Adsorption, Cr(VI), Ficus carica fiber, Kinetics, Microwave-activation, Wastewater",

author = "Gupta, \{Vinod Kumar\} and Deepak Pathania and Shikha Sharma and Pardeep Singh",

year = "2013",

month = jul,

day = "1",

doi = "10.1016/j.jcis.2013.03.020",

language = "English",

volume = "401",

pages = "125--132",

journal = "Journal of Colloid and Interface Science",

issn = "0021-9797",

publisher = "Academic Press Inc.",

}

TY - JOUR

T1 - Preparation of bio-based porous carbon by microwave assisted phosphoric acid activation and its use for adsorption of Cr(VI)

AU - Gupta, Vinod Kumar

AU - Pathania, Deepak

AU - Sharma, Shikha

AU - Singh, Pardeep

PY - 2013/7/1

Y1 - 2013/7/1

N2 - Ficus carica fiber based activated carbon (FCAC) was used as a potential adsorbent for Cr(VI) removal from aqueous system. The adsorbent was prepared by carbonization of F. carica fiber followed by H3PO4 activation under microwave radiations. The activated carbon was characterized using scanning electron microscopy and Fourier transformer infrared spectroscopy. The adsorption data were well studied for adsorption isotherms, kinetics models, and thermodynamics. Adsorption of chromium ion followed the second-order kinetics and best fitted the Langmuir adsorption isotherms. The maximum adsorption capacity of Cr(VI) onto FCAC was 44.84mg/g. The calculated values of thermodynamic parameters like enthalpy change (δH°), entropy change (δS°), and free energy change (δG°) were found to be 7.85kJ/mol, 69.17J/molK, and -13.11kJ/mol, respectively. Adsorption process was spontaneous and endothermic in nature.

AB - Ficus carica fiber based activated carbon (FCAC) was used as a potential adsorbent for Cr(VI) removal from aqueous system. The adsorbent was prepared by carbonization of F. carica fiber followed by H3PO4 activation under microwave radiations. The activated carbon was characterized using scanning electron microscopy and Fourier transformer infrared spectroscopy. The adsorption data were well studied for adsorption isotherms, kinetics models, and thermodynamics. Adsorption of chromium ion followed the second-order kinetics and best fitted the Langmuir adsorption isotherms. The maximum adsorption capacity of Cr(VI) onto FCAC was 44.84mg/g. The calculated values of thermodynamic parameters like enthalpy change (δH°), entropy change (δS°), and free energy change (δG°) were found to be 7.85kJ/mol, 69.17J/molK, and -13.11kJ/mol, respectively. Adsorption process was spontaneous and endothermic in nature.

KW - Adsorption

KW - Cr(VI)

KW - Ficus carica fiber

KW - Kinetics

KW - Microwave-activation

KW - Wastewater

UR - https://www.scopus.com/pages/publications/84877582598

U2 - 10.1016/j.jcis.2013.03.020

DO - 10.1016/j.jcis.2013.03.020

M3 - Article

C2 - 23611657

AN - SCOPUS:84877582598

SN - 0021-9797

VL - 401

SP - 125

EP - 132

JO - Journal of Colloid and Interface Science

JF - Journal of Colloid and Interface Science

ER -

Preparation of bio-based porous carbon by microwave assisted phosphoric acid activation and its use for adsorption of Cr(VI)

Abstract

Keywords

ASJC Scopus subject areas

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