Nickel recycling through bioleaching of a Ni/Al2O3 commercial catalyst

Detalhes bibliográficos
Autor(a) principal: Tayar, Samir Prioto [UNESP]
Data de Publicação: 2020
Outros Autores: Yeste, Maria Pilar, Ramirez, Martin, Cabrera, Gema, Bevilaqua, Denise [UNESP], Gatica, Jose Manuel, Vidal, Hilario, Cauqui, Miguel Angel, Cantero, Domingo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.hydromet.2020.105350
http://hdl.handle.net/11449/195519
Resumo: Bioleaching studies were carried out on a commercial nickel-based reforming catalyst using two acidophilic bacteria (Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans) under several types of bioleaching mode (one-step, two-step and spent medium-step) and catalyst pretreatment (with and without reduction). The highest percentage of nickel extraction was achieved using A. thiooxidans under spent medium-step (94.4 +/- 0.1%). The percentage of nickel extracted was constant (85.6 +/- 3.9%) up to a pulp density of 5% w v(-1), and it decreased at higher pulp densities due to acid depletion. In order to assess the potential reuse of the recovered metal, the nickel solution obtained by bioleaching was recycled by using it to prepare a new Ni/Al2O3 catalyst by impregnation of a commercial alumina support. Characterization of the catalyst prepared from recycled nickel showed that it had a high purity along with a suitable texture and metallic dispersion. Indeed, the activity of the new catalyst in the dry reforming of methane provided a high conversion of methane (99%) with good stability over time under the experimental conditions employed.
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spelling Nickel recycling through bioleaching of a Ni/Al2O3 commercial catalystBioleachingNi/Al2O3Metal recyclingMethane dry reformingNickelBioleaching studies were carried out on a commercial nickel-based reforming catalyst using two acidophilic bacteria (Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans) under several types of bioleaching mode (one-step, two-step and spent medium-step) and catalyst pretreatment (with and without reduction). The highest percentage of nickel extraction was achieved using A. thiooxidans under spent medium-step (94.4 +/- 0.1%). The percentage of nickel extracted was constant (85.6 +/- 3.9%) up to a pulp density of 5% w v(-1), and it decreased at higher pulp densities due to acid depletion. In order to assess the potential reuse of the recovered metal, the nickel solution obtained by bioleaching was recycled by using it to prepare a new Ni/Al2O3 catalyst by impregnation of a commercial alumina support. Characterization of the catalyst prepared from recycled nickel showed that it had a high purity along with a suitable texture and metallic dispersion. Indeed, the activity of the new catalyst in the dry reforming of methane provided a high conversion of methane (99%) with good stability over time under the experimental conditions employed.Spanish Government (Ministerio de Economia y Competitividad)Junta de AndaluciaSao Paulo State Univ, Inst Chem, UNESP, BR-14800900 Araraquara, SP, BrazilUniv Cadiz, Dept Mat Sci Met Engn & Inorgan Chem, Cadiz 11510, SpainUniv Cadiz, Inst Electron Microscopy & Mat IMEYMAT, Fac Sci, Cadiz 11510, SpainUniv Cadiz, Inst Univ Invest Vitivinicola & Agroalimentario I, Fac Sci, Dept Chem Engn & Food Technol, Cadiz 11510, SpainSao Paulo State Univ, Inst Chem, UNESP, BR-14800900 Araraquara, SP, BrazilSpanish Government (Ministerio de Economia y Competitividad): CTM2016-79089-RSpanish Government (Ministerio de Economia y Competitividad): MAT2017-87579-RJunta de Andalucia: TEP-105Junta de Andalucia: FQM-110Elsevier B.V.Universidade Estadual Paulista (Unesp)Univ CadizTayar, Samir Prioto [UNESP]Yeste, Maria PilarRamirez, MartinCabrera, GemaBevilaqua, Denise [UNESP]Gatica, Jose ManuelVidal, HilarioCauqui, Miguel AngelCantero, Domingo2020-12-10T17:37:22Z2020-12-10T17:37:22Z2020-08-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article8http://dx.doi.org/10.1016/j.hydromet.2020.105350Hydrometallurgy. Amsterdam: Elsevier, v. 195, 8 p., 2020.0304-386Xhttp://hdl.handle.net/11449/19551910.1016/j.hydromet.2020.105350WOS:000549135400003Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengHydrometallurgyinfo:eu-repo/semantics/openAccess2021-10-23T09:20:12Zoai:repositorio.unesp.br:11449/195519Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:11:42.044271Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Nickel recycling through bioleaching of a Ni/Al2O3 commercial catalyst
title Nickel recycling through bioleaching of a Ni/Al2O3 commercial catalyst
spellingShingle Nickel recycling through bioleaching of a Ni/Al2O3 commercial catalyst
Tayar, Samir Prioto [UNESP]
Bioleaching
Ni/Al2O3
Metal recycling
Methane dry reforming
Nickel
title_short Nickel recycling through bioleaching of a Ni/Al2O3 commercial catalyst
title_full Nickel recycling through bioleaching of a Ni/Al2O3 commercial catalyst
title_fullStr Nickel recycling through bioleaching of a Ni/Al2O3 commercial catalyst
title_full_unstemmed Nickel recycling through bioleaching of a Ni/Al2O3 commercial catalyst
title_sort Nickel recycling through bioleaching of a Ni/Al2O3 commercial catalyst
author Tayar, Samir Prioto [UNESP]
author_facet Tayar, Samir Prioto [UNESP]
Yeste, Maria Pilar
Ramirez, Martin
Cabrera, Gema
Bevilaqua, Denise [UNESP]
Gatica, Jose Manuel
Vidal, Hilario
Cauqui, Miguel Angel
Cantero, Domingo
author_role author
author2 Yeste, Maria Pilar
Ramirez, Martin
Cabrera, Gema
Bevilaqua, Denise [UNESP]
Gatica, Jose Manuel
Vidal, Hilario
Cauqui, Miguel Angel
Cantero, Domingo
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Univ Cadiz
dc.contributor.author.fl_str_mv Tayar, Samir Prioto [UNESP]
Yeste, Maria Pilar
Ramirez, Martin
Cabrera, Gema
Bevilaqua, Denise [UNESP]
Gatica, Jose Manuel
Vidal, Hilario
Cauqui, Miguel Angel
Cantero, Domingo
dc.subject.por.fl_str_mv Bioleaching
Ni/Al2O3
Metal recycling
Methane dry reforming
Nickel
topic Bioleaching
Ni/Al2O3
Metal recycling
Methane dry reforming
Nickel
description Bioleaching studies were carried out on a commercial nickel-based reforming catalyst using two acidophilic bacteria (Acidithiobacillus ferrooxidans and Acidithiobacillus thiooxidans) under several types of bioleaching mode (one-step, two-step and spent medium-step) and catalyst pretreatment (with and without reduction). The highest percentage of nickel extraction was achieved using A. thiooxidans under spent medium-step (94.4 +/- 0.1%). The percentage of nickel extracted was constant (85.6 +/- 3.9%) up to a pulp density of 5% w v(-1), and it decreased at higher pulp densities due to acid depletion. In order to assess the potential reuse of the recovered metal, the nickel solution obtained by bioleaching was recycled by using it to prepare a new Ni/Al2O3 catalyst by impregnation of a commercial alumina support. Characterization of the catalyst prepared from recycled nickel showed that it had a high purity along with a suitable texture and metallic dispersion. Indeed, the activity of the new catalyst in the dry reforming of methane provided a high conversion of methane (99%) with good stability over time under the experimental conditions employed.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-10T17:37:22Z
2020-12-10T17:37:22Z
2020-08-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1016/j.hydromet.2020.105350
Hydrometallurgy. Amsterdam: Elsevier, v. 195, 8 p., 2020.
0304-386X
http://hdl.handle.net/11449/195519
10.1016/j.hydromet.2020.105350
WOS:000549135400003
url http://dx.doi.org/10.1016/j.hydromet.2020.105350
http://hdl.handle.net/11449/195519
identifier_str_mv Hydrometallurgy. Amsterdam: Elsevier, v. 195, 8 p., 2020.
0304-386X
10.1016/j.hydromet.2020.105350
WOS:000549135400003
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Hydrometallurgy
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 8
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
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