On the Adsorption of Cerium(III) Using Multiwalled Carbon Nanotubes

On the Adsorption of Cerium(III) Using Multiwalled Carbon Nanotubes

Commercially available oxidized (carboxylic groups) and nonoxidized multiwalled carbon nanotubes were studied as adsorbents of cerium(III) in batch operation mode. Several variables affecting the rare earth adsorption were investigated, including: the stirring speed applied to the system, the pH of...

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Main Authors: Francisco José Alguacil, Irene García-Díaz, Esther Escudero Baquero, Olga Rodríguez Largo, Félix Antonio López
Format: Article
Language:English
Published: MDPI AG 2020-08-01
Series:Metals
Subjects:
adsorption
carbon nanotubes
rare earth
Online Access:https://www.mdpi.com/2075-4701/10/8/1057
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spelling doaj-1b74ccbc9c1848198d1aa8192f16955f2020-11-25T03:17:39ZengMDPI AGMetals2075-47012020-08-01101057105710.3390/met10081057On the Adsorption of Cerium(III) Using Multiwalled Carbon NanotubesFrancisco José Alguacil0Irene García-Díaz1Esther Escudero Baquero2Olga Rodríguez Largo3Félix Antonio López4TecnoEco Group, Department of Primary Metallurgy and Materials Recycling, Centro Nacional de Investigaciones Metalurgicas (CSIC). Avda. Gregorio del Amo 8. 28040 Madrid, SpainTecnoEco Group, Department of Primary Metallurgy and Materials Recycling, Centro Nacional de Investigaciones Metalurgicas (CSIC). Avda. Gregorio del Amo 8. 28040 Madrid, SpainTecnoEco Group, Department of Primary Metallurgy and Materials Recycling, Centro Nacional de Investigaciones Metalurgicas (CSIC). Avda. Gregorio del Amo 8. 28040 Madrid, SpainTecnoEco Group, Department of Primary Metallurgy and Materials Recycling, Centro Nacional de Investigaciones Metalurgicas (CSIC). Avda. Gregorio del Amo 8. 28040 Madrid, SpainTecnoEco Group, Department of Primary Metallurgy and Materials Recycling, Centro Nacional de Investigaciones Metalurgicas (CSIC). Avda. Gregorio del Amo 8. 28040 Madrid, SpainCommercially available oxidized (carboxylic groups) and nonoxidized multiwalled carbon nanotubes were studied as adsorbents of cerium(III) in batch operation mode. Several variables affecting the rare earth adsorption were investigated, including: the stirring speed applied to the system, the pH of the solution, and the metal concentration and carbon dosages. Although the removal of cerium from the solution is different and dependent upon the adsorbent type—(i) adsorption in nonoxidized multiwalled carbon nanotubes, (ii) cation exchange in the case of using oxidized multiwalled carbon nanotubes—the adsorption kinetics, the rate law and the isotherm models are the same for both adsorbents: pseudo-second order, film diffusion, and Langmuir Type-1, respectively. Cerium is desorbed from loaded adsorbents using acidic solutions.https://www.mdpi.com/2075-4701/10/8/1057adsorptioncarbon nanotubesrare earth
collection DOAJ
language English
format Article
sources DOAJ
author Francisco José Alguacil
Irene García-Díaz
Esther Escudero Baquero
Olga Rodríguez Largo
Félix Antonio López
spellingShingle Francisco José Alguacil
Irene García-Díaz
Esther Escudero Baquero
Olga Rodríguez Largo
Félix Antonio López
On the Adsorption of Cerium(III) Using Multiwalled Carbon Nanotubes
Metals
adsorption
carbon nanotubes
rare earth
author_facet Francisco José Alguacil
Irene García-Díaz
Esther Escudero Baquero
Olga Rodríguez Largo
Félix Antonio López
author_sort Francisco José Alguacil
title On the Adsorption of Cerium(III) Using Multiwalled Carbon Nanotubes
title_short On the Adsorption of Cerium(III) Using Multiwalled Carbon Nanotubes
title_full On the Adsorption of Cerium(III) Using Multiwalled Carbon Nanotubes
title_fullStr On the Adsorption of Cerium(III) Using Multiwalled Carbon Nanotubes
title_full_unstemmed On the Adsorption of Cerium(III) Using Multiwalled Carbon Nanotubes
title_sort on the adsorption of cerium(iii) using multiwalled carbon nanotubes
publisher MDPI AG
series Metals
issn 2075-4701
publishDate 2020-08-01
description Commercially available oxidized (carboxylic groups) and nonoxidized multiwalled carbon nanotubes were studied as adsorbents of cerium(III) in batch operation mode. Several variables affecting the rare earth adsorption were investigated, including: the stirring speed applied to the system, the pH of the solution, and the metal concentration and carbon dosages. Although the removal of cerium from the solution is different and dependent upon the adsorbent type—(i) adsorption in nonoxidized multiwalled carbon nanotubes, (ii) cation exchange in the case of using oxidized multiwalled carbon nanotubes—the adsorption kinetics, the rate law and the isotherm models are the same for both adsorbents: pseudo-second order, film diffusion, and Langmuir Type-1, respectively. Cerium is desorbed from loaded adsorbents using acidic solutions.
topic adsorption
carbon nanotubes
rare earth
url https://www.mdpi.com/2075-4701/10/8/1057
work_keys_str_mv AT franciscojosealguacil ontheadsorptionofceriumiiiusingmultiwalledcarbonnanotubes
AT irenegarciadiaz ontheadsorptionofceriumiiiusingmultiwalledcarbonnanotubes
AT estherescuderobaquero ontheadsorptionofceriumiiiusingmultiwalledcarbonnanotubes
AT olgarodriguezlargo ontheadsorptionofceriumiiiusingmultiwalledcarbonnanotubes
AT felixantoniolopez ontheadsorptionofceriumiiiusingmultiwalledcarbonnanotubes
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