Biochar-TiO2 magnetic nanocomposites for photocatalytic solar-driven removal of antibiotics from aquaculture effluents

Bibliographic Details
Main Author: Silva, Carla Patrícia
Publication Date: 2021
Other Authors: Pereira, Diogo, Calisto, Vânia, Martins, Manuel A., Otero, Marta, Esteves, Valdemar I., Lima, Diana L. D.
Format: Article
Language: eng
Source: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Download full: http://hdl.handle.net/10773/31474
Summary: Contamination of surrounding waters with antibiotics by aquaculture effluents can be problematic due to the possible increase of bacterial resistance, making it crucial the efficient treatment of those effluents before their release into the environment. In this work, the application of waste-based magnetic biochar/titanium dioxide (BC/TiO2) composite materials on the photodegradation of two antibiotics widely used in aquaculture (sulfadiazine (SDZ) and oxolinic acid (OXA)) was assessed. Four materials were synthesized: BCMag (magnetized BC), BCMag_TiO2 (BCMag functionalized with TiO2), BC_TiO2_MagIn and BC_TiO2_MagEx (BC functionalized with TiO2 and afterwards magnetized by in-situ and ex-situ approaches, respectively). SDZ half-life time (t1/2) noticeably decreased 3.9 and 3.4 times in presence of BCMag_TiO2 and BC_TiO2_MagEx, respectively. In the case of OXA, even though differences were not so substantial, the produced photocatalysts also allowed for a decrease in t1/2 (2.6 and 1.7 times, in presence of BCMag_TiO2 and BC_TiO2_MagEx, respectively). Overall, the here synthesized BC/TiO2 magnetic nanocomposites through a circular economy process are promising photocatalysts for a sustainable solar-driven removal of antibiotics from aquaculture effluents.
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spelling Biochar-TiO2 magnetic nanocomposites for photocatalytic solar-driven removal of antibiotics from aquaculture effluentsSynthetic photocatalystsPhotodegradationCarbonaceous nanocompositesWater treatmentWaste valorizationContamination of surrounding waters with antibiotics by aquaculture effluents can be problematic due to the possible increase of bacterial resistance, making it crucial the efficient treatment of those effluents before their release into the environment. In this work, the application of waste-based magnetic biochar/titanium dioxide (BC/TiO2) composite materials on the photodegradation of two antibiotics widely used in aquaculture (sulfadiazine (SDZ) and oxolinic acid (OXA)) was assessed. Four materials were synthesized: BCMag (magnetized BC), BCMag_TiO2 (BCMag functionalized with TiO2), BC_TiO2_MagIn and BC_TiO2_MagEx (BC functionalized with TiO2 and afterwards magnetized by in-situ and ex-situ approaches, respectively). SDZ half-life time (t1/2) noticeably decreased 3.9 and 3.4 times in presence of BCMag_TiO2 and BC_TiO2_MagEx, respectively. In the case of OXA, even though differences were not so substantial, the produced photocatalysts also allowed for a decrease in t1/2 (2.6 and 1.7 times, in presence of BCMag_TiO2 and BC_TiO2_MagEx, respectively). Overall, the here synthesized BC/TiO2 magnetic nanocomposites through a circular economy process are promising photocatalysts for a sustainable solar-driven removal of antibiotics from aquaculture effluents.Elsevier2023-09-15T00:00:00Z2021-09-15T00:00:00Z2021-09-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/31474eng0301-479710.1016/j.jenvman.2021.112937Silva, Carla PatríciaPereira, DiogoCalisto, VâniaMartins, Manuel A.Otero, MartaEsteves, Valdemar I.Lima, Diana L. D.info: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:RCAAP2024-02-22T12:00:46Zoai:ria.ua.pt:10773/31474Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:03:21.043462Repositório 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 Biochar-TiO2 magnetic nanocomposites for photocatalytic solar-driven removal of antibiotics from aquaculture effluents
title Biochar-TiO2 magnetic nanocomposites for photocatalytic solar-driven removal of antibiotics from aquaculture effluents
spellingShingle Biochar-TiO2 magnetic nanocomposites for photocatalytic solar-driven removal of antibiotics from aquaculture effluents
Silva, Carla Patrícia
Synthetic photocatalysts
Photodegradation
Carbonaceous nanocomposites
Water treatment
Waste valorization
title_short Biochar-TiO2 magnetic nanocomposites for photocatalytic solar-driven removal of antibiotics from aquaculture effluents
title_full Biochar-TiO2 magnetic nanocomposites for photocatalytic solar-driven removal of antibiotics from aquaculture effluents
title_fullStr Biochar-TiO2 magnetic nanocomposites for photocatalytic solar-driven removal of antibiotics from aquaculture effluents
title_full_unstemmed Biochar-TiO2 magnetic nanocomposites for photocatalytic solar-driven removal of antibiotics from aquaculture effluents
title_sort Biochar-TiO2 magnetic nanocomposites for photocatalytic solar-driven removal of antibiotics from aquaculture effluents
author Silva, Carla Patrícia
author_facet Silva, Carla Patrícia
Pereira, Diogo
Calisto, Vânia
Martins, Manuel A.
Otero, Marta
Esteves, Valdemar I.
Lima, Diana L. D.
author_role author
author2 Pereira, Diogo
Calisto, Vânia
Martins, Manuel A.
Otero, Marta
Esteves, Valdemar I.
Lima, Diana L. D.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Silva, Carla Patrícia
Pereira, Diogo
Calisto, Vânia
Martins, Manuel A.
Otero, Marta
Esteves, Valdemar I.
Lima, Diana L. D.
dc.subject.por.fl_str_mv Synthetic photocatalysts
Photodegradation
Carbonaceous nanocomposites
Water treatment
Waste valorization
topic Synthetic photocatalysts
Photodegradation
Carbonaceous nanocomposites
Water treatment
Waste valorization
description Contamination of surrounding waters with antibiotics by aquaculture effluents can be problematic due to the possible increase of bacterial resistance, making it crucial the efficient treatment of those effluents before their release into the environment. In this work, the application of waste-based magnetic biochar/titanium dioxide (BC/TiO2) composite materials on the photodegradation of two antibiotics widely used in aquaculture (sulfadiazine (SDZ) and oxolinic acid (OXA)) was assessed. Four materials were synthesized: BCMag (magnetized BC), BCMag_TiO2 (BCMag functionalized with TiO2), BC_TiO2_MagIn and BC_TiO2_MagEx (BC functionalized with TiO2 and afterwards magnetized by in-situ and ex-situ approaches, respectively). SDZ half-life time (t1/2) noticeably decreased 3.9 and 3.4 times in presence of BCMag_TiO2 and BC_TiO2_MagEx, respectively. In the case of OXA, even though differences were not so substantial, the produced photocatalysts also allowed for a decrease in t1/2 (2.6 and 1.7 times, in presence of BCMag_TiO2 and BC_TiO2_MagEx, respectively). Overall, the here synthesized BC/TiO2 magnetic nanocomposites through a circular economy process are promising photocatalysts for a sustainable solar-driven removal of antibiotics from aquaculture effluents.
publishDate 2021
dc.date.none.fl_str_mv 2021-09-15T00:00:00Z
2021-09-15
2023-09-15T00:00:00Z
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/10773/31474
url http://hdl.handle.net/10773/31474
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0301-4797
10.1016/j.jenvman.2021.112937
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
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
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
repository.mail.fl_str_mv
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