Optimizing microwave-assisted production of waste-based activated carbons for the removal of antibiotics from water

Detalhes bibliográficos
Autor(a) principal: Sousa, Érika
Data de Publicação: 2021
Outros Autores: Rocha, Luciana, Jaria, Guilaine, Gil, Maria V., Otero, Marta, Esteves, Valdemar, Calisto, Vânia
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/29268
Resumo: This work aimed at the microwave-assisted production of activated carbon (AC) from primary paper mill sludge (PS) for the adsorption of antibiotics from water. Production conditions, namely pyrolysis temperature, pyrolysis time and activating agent (KOH):PS ratio, were optimized as a function of product yield, specific surface area (SBET), total organic carbon (TOC) content and adsorptive removal percentage of two target antibiotics (amoxicillin (AMX) and sulfamethoxazole (SMX)). Under the optimized conditions (pyrolysis at 800 °C during 20 min and a KOH:PS ratio of 1:5), a microporous AC (MW800-20-1:5, with SBET = 1196 m2 g-1, TOC = 56.2% and removal of AMX and SMX = 85% and 72%, respectively) was produced and selected for further kinetic and equilibrium adsorption studies. The obtained results were properly described by the Elovich reaction-based kinetic model and the Langmuir equilibrium isotherm, with maximum adsorption capacities of 204 ± 5 mg g-1 and 217 ± 8 mg g-1 for AMX and SMX, respectively. Considering the satisfactory comparison of these results with the performance of commercial and alternative AC produced by conventional pyrolysis, this work demonstrated the feasibility of the microwave-assisted production of environmentally and energetically sustainable waste-based AC to be applied in the efficient removal of antibiotics from water.
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spelling Optimizing microwave-assisted production of waste-based activated carbons for the removal of antibiotics from waterWater treatmentPharmaceuticalsCellulose-derived wastePyrolysisCarbon adsorbentsChemical activationThis work aimed at the microwave-assisted production of activated carbon (AC) from primary paper mill sludge (PS) for the adsorption of antibiotics from water. Production conditions, namely pyrolysis temperature, pyrolysis time and activating agent (KOH):PS ratio, were optimized as a function of product yield, specific surface area (SBET), total organic carbon (TOC) content and adsorptive removal percentage of two target antibiotics (amoxicillin (AMX) and sulfamethoxazole (SMX)). Under the optimized conditions (pyrolysis at 800 °C during 20 min and a KOH:PS ratio of 1:5), a microporous AC (MW800-20-1:5, with SBET = 1196 m2 g-1, TOC = 56.2% and removal of AMX and SMX = 85% and 72%, respectively) was produced and selected for further kinetic and equilibrium adsorption studies. The obtained results were properly described by the Elovich reaction-based kinetic model and the Langmuir equilibrium isotherm, with maximum adsorption capacities of 204 ± 5 mg g-1 and 217 ± 8 mg g-1 for AMX and SMX, respectively. Considering the satisfactory comparison of these results with the performance of commercial and alternative AC produced by conventional pyrolysis, this work demonstrated the feasibility of the microwave-assisted production of environmentally and energetically sustainable waste-based AC to be applied in the efficient removal of antibiotics from water.Elsevier2023-01-15T00:00:00Z2021-01-15T00:00:00Z2021-01-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/29268eng0048-969710.1016/j.scitotenv.2020.141662Sousa, ÉrikaRocha, LucianaJaria, GuilaineGil, Maria V.Otero, MartaEsteves, ValdemarCalisto, Vâniainfo:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T11:56:37Zoai:ria.ua.pt:10773/29268Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:01:38.503401Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Optimizing microwave-assisted production of waste-based activated carbons for the removal of antibiotics from water
title Optimizing microwave-assisted production of waste-based activated carbons for the removal of antibiotics from water
spellingShingle Optimizing microwave-assisted production of waste-based activated carbons for the removal of antibiotics from water
Sousa, Érika
Water treatment
Pharmaceuticals
Cellulose-derived waste
Pyrolysis
Carbon adsorbents
Chemical activation
title_short Optimizing microwave-assisted production of waste-based activated carbons for the removal of antibiotics from water
title_full Optimizing microwave-assisted production of waste-based activated carbons for the removal of antibiotics from water
title_fullStr Optimizing microwave-assisted production of waste-based activated carbons for the removal of antibiotics from water
title_full_unstemmed Optimizing microwave-assisted production of waste-based activated carbons for the removal of antibiotics from water
title_sort Optimizing microwave-assisted production of waste-based activated carbons for the removal of antibiotics from water
author Sousa, Érika
author_facet Sousa, Érika
Rocha, Luciana
Jaria, Guilaine
Gil, Maria V.
Otero, Marta
Esteves, Valdemar
Calisto, Vânia
author_role author
author2 Rocha, Luciana
Jaria, Guilaine
Gil, Maria V.
Otero, Marta
Esteves, Valdemar
Calisto, Vânia
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Sousa, Érika
Rocha, Luciana
Jaria, Guilaine
Gil, Maria V.
Otero, Marta
Esteves, Valdemar
Calisto, Vânia
dc.subject.por.fl_str_mv Water treatment
Pharmaceuticals
Cellulose-derived waste
Pyrolysis
Carbon adsorbents
Chemical activation
topic Water treatment
Pharmaceuticals
Cellulose-derived waste
Pyrolysis
Carbon adsorbents
Chemical activation
description This work aimed at the microwave-assisted production of activated carbon (AC) from primary paper mill sludge (PS) for the adsorption of antibiotics from water. Production conditions, namely pyrolysis temperature, pyrolysis time and activating agent (KOH):PS ratio, were optimized as a function of product yield, specific surface area (SBET), total organic carbon (TOC) content and adsorptive removal percentage of two target antibiotics (amoxicillin (AMX) and sulfamethoxazole (SMX)). Under the optimized conditions (pyrolysis at 800 °C during 20 min and a KOH:PS ratio of 1:5), a microporous AC (MW800-20-1:5, with SBET = 1196 m2 g-1, TOC = 56.2% and removal of AMX and SMX = 85% and 72%, respectively) was produced and selected for further kinetic and equilibrium adsorption studies. The obtained results were properly described by the Elovich reaction-based kinetic model and the Langmuir equilibrium isotherm, with maximum adsorption capacities of 204 ± 5 mg g-1 and 217 ± 8 mg g-1 for AMX and SMX, respectively. Considering the satisfactory comparison of these results with the performance of commercial and alternative AC produced by conventional pyrolysis, this work demonstrated the feasibility of the microwave-assisted production of environmentally and energetically sustainable waste-based AC to be applied in the efficient removal of antibiotics from water.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-15T00:00:00Z
2021-01-15
2023-01-15T00:00:00Z
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://hdl.handle.net/10773/29268
url http://hdl.handle.net/10773/29268
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0048-9697
10.1016/j.scitotenv.2020.141662
dc.rights.driver.fl_str_mv info:eu-repo/semantics/embargoedAccess
eu_rights_str_mv embargoedAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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