Effective adsorption of sulfur dioxide by activated carbons containing calcium carbonate from deinking paper sludge

Nieto-Márquez Ballesteros, Antonio and Atanes Sánchez, Evangelina and Fernández Fernández, Alberto and López Villa, Sergio and Cambra Pereira, Alberto and Fernández Martínez, Francisco (2014). Effective adsorption of sulfur dioxide by activated carbons containing calcium carbonate from deinking paper sludge. "Industrial & Engineering Chemistry Research: I&EC Research", v. 53 (n. 40); pp. 15620-15628. ISSN 1520-5045. https://doi.org/10.1021/ie502955p.

Description

Title: Effective adsorption of sulfur dioxide by activated carbons containing calcium carbonate from deinking paper sludge
Author/s:
  • Nieto-Márquez Ballesteros, Antonio
  • Atanes Sánchez, Evangelina
  • Fernández Fernández, Alberto
  • López Villa, Sergio
  • Cambra Pereira, Alberto
  • Fernández Martínez, Francisco
Item Type: Article
Título de Revista/Publicación: Industrial & Engineering Chemistry Research: I&EC Research
Date: 11 September 2014
ISSN: 1520-5045
Volume: 53
Subjects:
Faculty: E.T.S.I. Diseño Industrial (UPM)
Department: Ingeniería Mecánica, Química y Diseño Industrial
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Two activated carbons have been prepared by chemical activation of deinking paper sludge with K₂CO₃, with further carbonization in N₂ (AC-N₂) or CO₂ (AC-CO₂) and characterized in terms of proximate analyses, adsorption/desorption of N₂, skeletal and bulk pycnometry, acid/base and Boehm’s titrations, X-ray diffraction and scanning electron microscopy–energy dispersive spectroscopy (SEM-EDS) analyses. A commercial activated carbon (AC-COM) was subjected to the same characterization program for comparison purposes. Surface area/porosity followed the trend: AC-CO₂ < AC-N₂ < AC-COM, revealing a good development of porosity in samples prepared in the laboratory but not approaching that of the commercial sample. Surface basicity, in turn, followed the trend: AC-CO₂ > AC-N₂ ≫ AC-COM, due to the presence of CaCO₃, which is a basic salt, in the carbons prepared. The three adsorbents were tested in the adsorption of SO₂, where a proper selection of carbon particle size that maximized pore diffusion control led to a higher SO₂ uptake. Adsorption equilibrium was successfully fitted to Langmuir and Freundlich isotherms. Final adsorption capacity was governed by textural properties, while adsorption affinity was influenced by both surface basicity and porosity.

More information

Item ID: 66017
DC Identifier: http://oa.upm.es/66017/
OAI Identifier: oai:oa.upm.es:66017
DOI: 10.1021/ie502955p
Official URL: https://pubs.acs.org/doi/abs/10.1021/ie502955p
Deposited by: Memoria Investigacion
Deposited on: 04 Feb 2021 08:59
Last Modified: 23 Feb 2021 11:03
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