Treatment and Valorisation of Pomace Olive Oil Wastewater
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | |
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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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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1817543042397110272 |