Treatment and Valorisation of Pomace Olive Oil Wastewater

Detalhes bibliográficos
Autor(a) principal: Martins, Ramiro
Data de Publicação: 2023
Outros Autores: Grabowski, Thais Theomaris dos Santos
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10198/28678
Resumo: Wastewater generated during the production of pomace olive oil is complex and highly variable due to different cultivation and processing characteristics. It has a high toxic organic load, low pH, and high chemical and biological demands. To reduce the concentration of chemical oxygen demand (COD) and total phenolic compounds (TPh) in pomace olive oil wastewater, several treatment processes have been studied. These include: (i) coagulation/flocculation, (ii) electrocoagulation, (iii) peroxy-electrocoagulation, (iv) electrochemical peroxidation, (v) Fenton, (vi) electro-Fenton, (vii) photo-Fenton, and (viii) adsorption. Coagulation/flocculation and electrocoagulation resulted in a maximum COD removal of 16%, while techniques involving the addition of hydrogen peroxide (iii-vii) had an average of 78% TPh removal but only 20% COD removal. Adsorption resulted in a maximum of 29% COD and 75% TPh removal. None of the tested techniques were able to remove more than 50% of COD, indicating the difficulty of removing organic matter in this effluent. However, advanced oxidation techniques were effective in degrading phenolic compounds, although they required relatively high dosages of oxidant.
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spelling Treatment and Valorisation of Pomace Olive Oil WastewaterChemical oxygen demandTotal phenolic compoundsCoagulationAdvanced oxidative processesAdsorptionWastewater generated during the production of pomace olive oil is complex and highly variable due to different cultivation and processing characteristics. It has a high toxic organic load, low pH, and high chemical and biological demands. To reduce the concentration of chemical oxygen demand (COD) and total phenolic compounds (TPh) in pomace olive oil wastewater, several treatment processes have been studied. These include: (i) coagulation/flocculation, (ii) electrocoagulation, (iii) peroxy-electrocoagulation, (iv) electrochemical peroxidation, (v) Fenton, (vi) electro-Fenton, (vii) photo-Fenton, and (viii) adsorption. Coagulation/flocculation and electrocoagulation resulted in a maximum COD removal of 16%, while techniques involving the addition of hydrogen peroxide (iii-vii) had an average of 78% TPh removal but only 20% COD removal. Adsorption resulted in a maximum of 29% COD and 75% TPh removal. None of the tested techniques were able to remove more than 50% of COD, indicating the difficulty of removing organic matter in this effluent. However, advanced oxidation techniques were effective in degrading phenolic compounds, although they required relatively high dosages of oxidant.This work was financially supported by i) Project NORTE-01-0247-FEDER-072124, BagaÇo+Valor - Tecnologia Limpa para a Valorização dos Subprodutos do Bagaço na Indústria Extratora de Azeite, funded by the European Regional Development Fund (ERDF) and ii) LA/P/0045/2020 (ALiCE), UIDB/50020/2020 and UIDP/50020/2020 (LSRE-LCM), funded by national funds through FCT/MCTES (PIDDAC).Polskie Towarzystwo Przeróbki KopalinBiblioteca Digital do IPBMartins, RamiroGrabowski, Thais Theomaris dos Santos2023-08-23T10:58:33Z20242024-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/28678engMartins, Ramiro José Espinheira; Grabowski, Thais Theomaris (2024). Treatment and Valorisation of Pomace Olive Oil Wastewater. Inzynieria Mineralna. ISSN 1640-4920. 1:1, p. 725-7301640-492010.29227/IM-2024-01-84info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-10-30T01:21:51Zoai:bibliotecadigital.ipb.pt:10198/28678Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-10-30T01:21:51Repositório 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 Treatment and Valorisation of Pomace Olive Oil Wastewater
title Treatment and Valorisation of Pomace Olive Oil Wastewater
spellingShingle Treatment and Valorisation of Pomace Olive Oil Wastewater
Martins, Ramiro
Chemical oxygen demand
Total phenolic compounds
Coagulation
Advanced oxidative processes
Adsorption
title_short Treatment and Valorisation of Pomace Olive Oil Wastewater
title_full Treatment and Valorisation of Pomace Olive Oil Wastewater
title_fullStr Treatment and Valorisation of Pomace Olive Oil Wastewater
title_full_unstemmed Treatment and Valorisation of Pomace Olive Oil Wastewater
title_sort Treatment and Valorisation of Pomace Olive Oil Wastewater
author Martins, Ramiro
author_facet Martins, Ramiro
Grabowski, Thais Theomaris dos Santos
author_role author
author2 Grabowski, Thais Theomaris dos Santos
author2_role author
dc.contributor.none.fl_str_mv Biblioteca Digital do IPB
dc.contributor.author.fl_str_mv Martins, Ramiro
Grabowski, Thais Theomaris dos Santos
dc.subject.por.fl_str_mv Chemical oxygen demand
Total phenolic compounds
Coagulation
Advanced oxidative processes
Adsorption
topic Chemical oxygen demand
Total phenolic compounds
Coagulation
Advanced oxidative processes
Adsorption
description Wastewater generated during the production of pomace olive oil is complex and highly variable due to different cultivation and processing characteristics. It has a high toxic organic load, low pH, and high chemical and biological demands. To reduce the concentration of chemical oxygen demand (COD) and total phenolic compounds (TPh) in pomace olive oil wastewater, several treatment processes have been studied. These include: (i) coagulation/flocculation, (ii) electrocoagulation, (iii) peroxy-electrocoagulation, (iv) electrochemical peroxidation, (v) Fenton, (vi) electro-Fenton, (vii) photo-Fenton, and (viii) adsorption. Coagulation/flocculation and electrocoagulation resulted in a maximum COD removal of 16%, while techniques involving the addition of hydrogen peroxide (iii-vii) had an average of 78% TPh removal but only 20% COD removal. Adsorption resulted in a maximum of 29% COD and 75% TPh removal. None of the tested techniques were able to remove more than 50% of COD, indicating the difficulty of removing organic matter in this effluent. However, advanced oxidation techniques were effective in degrading phenolic compounds, although they required relatively high dosages of oxidant.
publishDate 2023
dc.date.none.fl_str_mv 2023-08-23T10:58:33Z
2024
2024-01-01T00:00:00Z
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/10198/28678
url http://hdl.handle.net/10198/28678
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Martins, Ramiro José Espinheira; Grabowski, Thais Theomaris (2024). Treatment and Valorisation of Pomace Olive Oil Wastewater. Inzynieria Mineralna. ISSN 1640-4920. 1:1, p. 725-730
1640-4920
10.29227/IM-2024-01-84
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Polskie Towarzystwo Przeróbki Kopalin
publisher.none.fl_str_mv Polskie Towarzystwo Przeróbki Kopalin
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 mluisa.alvim@gmail.com
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