Adsorption of SO₂ onto waste cork powder-derived activated carbons

Atanes Sánchez, Evangelina and Nieto-Márquez Ballesteros, Antonio and Cambra Pereira, Alberto and Ruiz Pérez, M. Carmen and Fernández Martínez, Francisco (2012). Adsorption of SO₂ onto waste cork powder-derived activated carbons. "Chemical Engineering Journal", v. 211 ; pp. 60-67. ISSN 1385-8947. https://doi.org/10.1016/j.cej.2012.09.043.

Description

Title: Adsorption of SO₂ onto waste cork powder-derived activated carbons
Author/s:
  • Atanes Sánchez, Evangelina
  • Nieto-Márquez Ballesteros, Antonio
  • Cambra Pereira, Alberto
  • Ruiz Pérez, M. Carmen
  • Fernández Martínez, Francisco
Item Type: Article
Título de Revista/Publicación: Chemical Engineering Journal
Date: 15 November 2012
ISSN: 1385-8947
Volume: 211
Subjects:
Freetext Keywords: Cork; Activated carbon; SO₂ adsorption; Porosity; Surface acidity
Faculty: E.U.I.T. Industrial (UPM)
Department: Química Industrial y Polímeros [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Three activated carbon samples have been prepared by thermal (ACcₕₐᵣ), physical (with CO₂, ACCₒ₂) and chemical (with KOH, ACₖₒₕ) activation of waste cork powder. Cork was characterized by thermogravimetric, elemental and proximate analyses, and activated carbons were characterized by elemental and proximate analyses, adsorption–desorption of N₂, acid/base and Boehm’s titration and FTIR (ATR) spectroscopy. A commercial activated carbon sample (ACcₒₘ) was subjected to the same characterization program for comparison purposes. Activation of cork conducted to an increase in BET surface area and pore volume in the sequence: ACcₕₐᵣ  < ACCₒ₂ < ACₖₒₕ, getting close to those of ACcₒₘ, and to an increase in surface acidity in the sequence: ACcₕₐᵣ  < ACCₒ₂ ≈ ACcₒₘ < ACₖₒₕ. The four adsorbents were tested in the adsorption of SO₂, where ACₖₒₕ presented the highest adsorption capacity, while ACcₕₐᵣ and ACCₒ₂ presented similar behaviors, comparable to that of ACcₒₘ. Adsorption equilibrium was successfully fitted to Langmuir and Freundlich isotherms. Desorption experiments demonstrated how SO₂ strong adsorption was favored when decreasing surface acidity.

More information

Item ID: 66018
DC Identifier: https://oa.upm.es/66018/
OAI Identifier: oai:oa.upm.es:66018
DOI: 10.1016/j.cej.2012.09.043
Official URL: https://www.sciencedirect.com/science/article/pii/S1385894712012326
Deposited by: Memoria Investigacion
Deposited on: 04 Feb 2021 10:48
Last Modified: 23 Feb 2021 11:26
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