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Adsorption of antipyrine by activated carbons from FeCl3-activation of Tara gum

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Date
2018
Author(s)
Bedia, Jorge
Belver Coldeira, Carolina
Ponce Álvarez, Silvia
Rodríguez, Juan Martín
Rodríguez, J. J.
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Abstract
Activated carbons were synthesized by FeCl3-activation of Tara gum at different temperatures (400–1000 °C). The activating agent and the precursor were physically mixed at different ratios (r= FeCl3:precursor, 0.5–3.0 wt). At r=2 and 800 °C the most developed porosity was achieved, with a BET surface area of 1680 m2·g-1 and a pore volume near 1 cm3·g-1, corresponding mostly to micropores (˜75%). The carbons were fully characterized and tested for the aqueous-phase adsorption of antipyrine, used as model emerging pollutant. The kinetic curves and adsorption isotherms at 20, 40 and 60 °C were obtained, which fitted well to hyperbolic and Langmuir equations, respectively. At 20 °C, the saturation adsorption capacity was around 275 mg·g-1 AC. The free energy of adsorption varied from -40.2 to -35.7 kJ·mol-1, while values close to -3 kJ·mol-1 and 112 J·mol-1·K-1, were obtained for the enthalpy and entropy of adsorption, respectively.
URI
https://hdl.handle.net/20.500.12724/4888
DOI
https://doi.org/10.1016/j.cej.2017.09.161
How to cite
Bedia, J., Belver, C., Ponce, S., Rodríguez, J. y Rodríguez, J. J. (2018). Adsorption of antipyrine by activated carbons from FeCl3-activation of Tara gum. Chemical Engineering Journal, 333(2018), 58-65. https://doi.org/10.1016/j.cej.2017.09.161
Publisher
Elsevier BV
Area / Line of research
Calidad de vida y bienestar / Salud
Category / Subcategory
Recursos naturales y medio ambiente / Agua, suelo y aire
Subject
Goma de tara
Antipirina
Adsorción
Tara gum
Antipyrine
Adsorption
Related Resource(s)
https://www.sciencedirect.com/science/article/pii/S1385894717316613
Journal
Chemical Engineering Journal
ISSN
1385-8947
Note
Indexado en Scopus
Collections
  • Ingeniería Industrial [93]


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