Kinetic study of uranium removal from aqueous solutions by macauba biochar

Detalhes bibliográficos
Autor(a) principal: GUILHEN, S.N.
Data de Publicação: 2018
Outros Autores: PITOL-FILHO, L., FUNGARO, D.A., ENCONTRO BRASILEIRO SOBRE ADSORCAO, 12.
Tipo de documento: Artigo de conferência
Título da fonte: Repositório Institucional do IPEN
Texto Completo: http://repositorio.ipen.br/handle/123456789/29129
Resumo: Macauba (Acronomia aculeata) is a palm tree native of the Brazilian ???cerrado??? and a valuable renewable source of vegetable oil for human consumption and biodiesel production. Residue from the extraction of the coconut oil, the shell, or endocarp, can be used as a raw material for the production of biochar (BC) aiming the removal of uranium from aqueous solutions. Biochars are obtained by thermal decomposition of the biomass under inert atmosphere (pyrolysis) and, because of their surface properties and porous structure, they exhibit great potential as adsorbents. Adsorption of U(VI) was studied by a batch technique using a biochar produced through slow pyrolysis at 350??C of the macauba endocarp. The effect of contact time was investigated and a kinetic study was conducted to determine the mathematical model that best describes the adsorption process. The adsorption capacity (qmax) obtained for BC350 was 405 mg g-1.
id IPEN_41fcfe51d3dddcb518d7a73fc4d8be30
oai_identifier_str oai:repositorio.ipen.br:123456789/29129
network_acronym_str IPEN
network_name_str Repositório Institucional do IPEN
repository_id_str 4510
spelling 2018-09-13T17:08:04Z2018-09-13T17:08:04Z23-25 de abril, 2018http://repositorio.ipen.br/handle/123456789/29129Macauba (Acronomia aculeata) is a palm tree native of the Brazilian ???cerrado??? and a valuable renewable source of vegetable oil for human consumption and biodiesel production. Residue from the extraction of the coconut oil, the shell, or endocarp, can be used as a raw material for the production of biochar (BC) aiming the removal of uranium from aqueous solutions. Biochars are obtained by thermal decomposition of the biomass under inert atmosphere (pyrolysis) and, because of their surface properties and porous structure, they exhibit great potential as adsorbents. Adsorption of U(VI) was studied by a batch technique using a biochar produced through slow pyrolysis at 350??C of the macauba endocarp. The effect of contact time was investigated and a kinetic study was conducted to determine the mathematical model that best describes the adsorption process. The adsorption capacity (qmax) obtained for BC350 was 405 mg g-1.Submitted by Marco Antonio Oliveira da Silva (maosilva@ipen.br) on 2018-09-13T17:08:04Z No. of bitstreams: 1 24945.pdf: 196328 bytes, checksum: 368d76ceab71f483d24bc27bc60f9e48 (MD5)Made available in DSpace on 2018-09-13T17:08:04Z (GMT). No. of bitstreams: 1 24945.pdf: 196328 bytes, checksum: 368d76ceab71f483d24bc27bc60f9e48 (MD5)Kinetic study of uranium removal from aqueous solutions by macauba biocharinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectNGramado, RSGUILHEN, S.N.PITOL-FILHO, L.FUNGARO, D.A.ENCONTRO BRASILEIRO SOBRE ADSORCAO, 12.info:eu-repo/semantics/openAccessreponame:Repositório Institucional do IPENinstname:Instituto de Pesquisas Energéticas e Nucleares (IPEN)instacron:IPEN249452018GUILHEN, S.N.FUNGARO, D.A.18-09Anais5931587GUILHEN, S.N.:5931:510:SFUNGARO, D.A.:587:510:NORIGINAL24945.pdf24945.pdfapplication/pdf196328http://repositorio.ipen.br/bitstream/123456789/29129/1/24945.pdf368d76ceab71f483d24bc27bc60f9e48MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.ipen.br/bitstream/123456789/29129/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52123456789/291292018-09-13 17:08:04.959oai:repositorio.ipen.br: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Repositório InstitucionalPUBhttp://repositorio.ipen.br/oai/requestbibl@ipen.bropendoar:45102018-09-13T17:08:04Repositório Institucional do IPEN - Instituto de Pesquisas Energéticas e Nucleares (IPEN)false
dc.title.pt_BR.fl_str_mv Kinetic study of uranium removal from aqueous solutions by macauba biochar
title Kinetic study of uranium removal from aqueous solutions by macauba biochar
spellingShingle Kinetic study of uranium removal from aqueous solutions by macauba biochar
GUILHEN, S.N.
title_short Kinetic study of uranium removal from aqueous solutions by macauba biochar
title_full Kinetic study of uranium removal from aqueous solutions by macauba biochar
title_fullStr Kinetic study of uranium removal from aqueous solutions by macauba biochar
title_full_unstemmed Kinetic study of uranium removal from aqueous solutions by macauba biochar
title_sort Kinetic study of uranium removal from aqueous solutions by macauba biochar
author GUILHEN, S.N.
author_facet GUILHEN, S.N.
PITOL-FILHO, L.
FUNGARO, D.A.
ENCONTRO BRASILEIRO SOBRE ADSORCAO, 12.
author_role author
author2 PITOL-FILHO, L.
FUNGARO, D.A.
ENCONTRO BRASILEIRO SOBRE ADSORCAO, 12.
author2_role author
author
author
dc.contributor.author.fl_str_mv GUILHEN, S.N.
PITOL-FILHO, L.
FUNGARO, D.A.
ENCONTRO BRASILEIRO SOBRE ADSORCAO, 12.
description Macauba (Acronomia aculeata) is a palm tree native of the Brazilian ???cerrado??? and a valuable renewable source of vegetable oil for human consumption and biodiesel production. Residue from the extraction of the coconut oil, the shell, or endocarp, can be used as a raw material for the production of biochar (BC) aiming the removal of uranium from aqueous solutions. Biochars are obtained by thermal decomposition of the biomass under inert atmosphere (pyrolysis) and, because of their surface properties and porous structure, they exhibit great potential as adsorbents. Adsorption of U(VI) was studied by a batch technique using a biochar produced through slow pyrolysis at 350??C of the macauba endocarp. The effect of contact time was investigated and a kinetic study was conducted to determine the mathematical model that best describes the adsorption process. The adsorption capacity (qmax) obtained for BC350 was 405 mg g-1.
publishDate 2018
dc.date.evento.pt_BR.fl_str_mv 23-25 de abril, 2018
dc.date.accessioned.fl_str_mv 2018-09-13T17:08:04Z
dc.date.available.fl_str_mv 2018-09-13T17:08:04Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ipen.br/handle/123456789/29129
url http://repositorio.ipen.br/handle/123456789/29129
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.coverage.pt_BR.fl_str_mv N
dc.source.none.fl_str_mv reponame:Repositório Institucional do IPEN
instname:Instituto de Pesquisas Energéticas e Nucleares (IPEN)
instacron:IPEN
instname_str Instituto de Pesquisas Energéticas e Nucleares (IPEN)
instacron_str IPEN
institution IPEN
reponame_str Repositório Institucional do IPEN
collection Repositório Institucional do IPEN
bitstream.url.fl_str_mv http://repositorio.ipen.br/bitstream/123456789/29129/1/24945.pdf
http://repositorio.ipen.br/bitstream/123456789/29129/2/license.txt
bitstream.checksum.fl_str_mv 368d76ceab71f483d24bc27bc60f9e48
8a4605be74aa9ea9d79846c1fba20a33
bitstream.checksumAlgorithm.fl_str_mv MD5
MD5
repository.name.fl_str_mv Repositório Institucional do IPEN - Instituto de Pesquisas Energéticas e Nucleares (IPEN)
repository.mail.fl_str_mv bibl@ipen.br
_version_ 1767254245902385152

Registros relacionados