Removal of Clostridium perfringens and Staphylococcus spp. in Microalgal–Bacterial Systems: Influence of Microalgal Inoculum and CO2/O2 Addition
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.3390/w15010005 http://hdl.handle.net/11449/246631 |
Resumo: | Conventional biological wastewater treatment systems have a low pathogen removal capacity. Microalgae-based systems are sustainable and low-cost alternatives for wastewater treatment and are capable of removing pathogens from domestic effluents. Other microorganisms have been identified as alternative indicators of disinfection since they have greater resistance than Escherichia coli, either because of the formation of spores or because of other mechanisms of protection, and because they spread in wastewater treatment plants; the most important are Clostridium perfringens and Staphylococcus spp. This study assessed the influence of microalgal strains (e.g., Chlorella vulgaris and Scenedesmus acutus Meyen) and the addition of CO2 and O2 on the removal of C. perfringens and Staphylococcus spp. from domestic wastewater in microalgal–bacterial systems. The removal of C. perfringens (2.5 to 3.2 log units) and Staphylococcus sp. (1.8 to 2.0 log units) was higher when using Chlorella sp. inoculum. The addition of CO2 and O2 did not have a significant effect on the removal of pathogenic bacteria. The main mechanism of C. perfringens removal was by means of toxins and bactericidal substances produced by the microalgae, while Staphylococcus spp. removal also occurred through photooxidative processes. |
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Removal of Clostridium perfringens and Staphylococcus spp. in Microalgal–Bacterial Systems: Influence of Microalgal Inoculum and CO2/O2 AdditionChlorellaspdisinfectionhigh-rate algal pondpathogenic indicator organismsScenedesmussppwastewater treatmentConventional biological wastewater treatment systems have a low pathogen removal capacity. Microalgae-based systems are sustainable and low-cost alternatives for wastewater treatment and are capable of removing pathogens from domestic effluents. Other microorganisms have been identified as alternative indicators of disinfection since they have greater resistance than Escherichia coli, either because of the formation of spores or because of other mechanisms of protection, and because they spread in wastewater treatment plants; the most important are Clostridium perfringens and Staphylococcus spp. This study assessed the influence of microalgal strains (e.g., Chlorella vulgaris and Scenedesmus acutus Meyen) and the addition of CO2 and O2 on the removal of C. perfringens and Staphylococcus spp. from domestic wastewater in microalgal–bacterial systems. The removal of C. perfringens (2.5 to 3.2 log units) and Staphylococcus sp. (1.8 to 2.0 log units) was higher when using Chlorella sp. inoculum. The addition of CO2 and O2 did not have a significant effect on the removal of pathogenic bacteria. The main mechanism of C. perfringens removal was by means of toxins and bactericidal substances produced by the microalgae, while Staphylococcus spp. removal also occurred through photooxidative processes.Post-Graduate Programme of Environmental Technology Faculty of Engineering Architecture and Urbanism and Geography Federal University of Mato Grosso do SulFederal Institute of Mato Grosso do Sul, Campus JardimSchool of Engineering São Paulo State University (UNESP)Federal Institute of Mato Grosso do Sul, Campus AquidauanaSchool of Engineering São Paulo State University (UNESP)Federal University of Mato Grosso do SulFederal Institute of Mato Grosso do SulUniversidade Estadual Paulista (UNESP)Ruas, Graziele [UNESP]Farias, Sarah Lacerdados Reis, Bruno A. B.Serejo, Mayara Leiteda Silva, Gustavo Henrique Ribeiro [UNESP]Boncz, Marc Árpád2023-07-29T12:46:13Z2023-07-29T12:46:13Z2023-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.3390/w15010005Water (Switzerland), v. 15, n. 1, 2023.2073-4441http://hdl.handle.net/11449/24663110.3390/w150100052-s2.0-85146117106Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengWater (Switzerland)info:eu-repo/semantics/openAccess2023-07-29T12:46:13Zoai:repositorio.unesp.br:11449/246631Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:28:40.939322Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Removal of Clostridium perfringens and Staphylococcus spp. in Microalgal–Bacterial Systems: Influence of Microalgal Inoculum and CO2/O2 Addition |
title |
Removal of Clostridium perfringens and Staphylococcus spp. in Microalgal–Bacterial Systems: Influence of Microalgal Inoculum and CO2/O2 Addition |
spellingShingle |
Removal of Clostridium perfringens and Staphylococcus spp. in Microalgal–Bacterial Systems: Influence of Microalgal Inoculum and CO2/O2 Addition Ruas, Graziele [UNESP] Chlorellasp disinfection high-rate algal pond pathogenic indicator organisms Scenedesmusspp wastewater treatment |
title_short |
Removal of Clostridium perfringens and Staphylococcus spp. in Microalgal–Bacterial Systems: Influence of Microalgal Inoculum and CO2/O2 Addition |
title_full |
Removal of Clostridium perfringens and Staphylococcus spp. in Microalgal–Bacterial Systems: Influence of Microalgal Inoculum and CO2/O2 Addition |
title_fullStr |
Removal of Clostridium perfringens and Staphylococcus spp. in Microalgal–Bacterial Systems: Influence of Microalgal Inoculum and CO2/O2 Addition |
title_full_unstemmed |
Removal of Clostridium perfringens and Staphylococcus spp. in Microalgal–Bacterial Systems: Influence of Microalgal Inoculum and CO2/O2 Addition |
title_sort |
Removal of Clostridium perfringens and Staphylococcus spp. in Microalgal–Bacterial Systems: Influence of Microalgal Inoculum and CO2/O2 Addition |
author |
Ruas, Graziele [UNESP] |
author_facet |
Ruas, Graziele [UNESP] Farias, Sarah Lacerda dos Reis, Bruno A. B. Serejo, Mayara Leite da Silva, Gustavo Henrique Ribeiro [UNESP] Boncz, Marc Árpád |
author_role |
author |
author2 |
Farias, Sarah Lacerda dos Reis, Bruno A. B. Serejo, Mayara Leite da Silva, Gustavo Henrique Ribeiro [UNESP] Boncz, Marc Árpád |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Federal University of Mato Grosso do Sul Federal Institute of Mato Grosso do Sul Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Ruas, Graziele [UNESP] Farias, Sarah Lacerda dos Reis, Bruno A. B. Serejo, Mayara Leite da Silva, Gustavo Henrique Ribeiro [UNESP] Boncz, Marc Árpád |
dc.subject.por.fl_str_mv |
Chlorellasp disinfection high-rate algal pond pathogenic indicator organisms Scenedesmusspp wastewater treatment |
topic |
Chlorellasp disinfection high-rate algal pond pathogenic indicator organisms Scenedesmusspp wastewater treatment |
description |
Conventional biological wastewater treatment systems have a low pathogen removal capacity. Microalgae-based systems are sustainable and low-cost alternatives for wastewater treatment and are capable of removing pathogens from domestic effluents. Other microorganisms have been identified as alternative indicators of disinfection since they have greater resistance than Escherichia coli, either because of the formation of spores or because of other mechanisms of protection, and because they spread in wastewater treatment plants; the most important are Clostridium perfringens and Staphylococcus spp. This study assessed the influence of microalgal strains (e.g., Chlorella vulgaris and Scenedesmus acutus Meyen) and the addition of CO2 and O2 on the removal of C. perfringens and Staphylococcus spp. from domestic wastewater in microalgal–bacterial systems. The removal of C. perfringens (2.5 to 3.2 log units) and Staphylococcus sp. (1.8 to 2.0 log units) was higher when using Chlorella sp. inoculum. The addition of CO2 and O2 did not have a significant effect on the removal of pathogenic bacteria. The main mechanism of C. perfringens removal was by means of toxins and bactericidal substances produced by the microalgae, while Staphylococcus spp. removal also occurred through photooxidative processes. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-29T12:46:13Z 2023-07-29T12:46:13Z 2023-01-01 |
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://dx.doi.org/10.3390/w15010005 Water (Switzerland), v. 15, n. 1, 2023. 2073-4441 http://hdl.handle.net/11449/246631 10.3390/w15010005 2-s2.0-85146117106 |
url |
http://dx.doi.org/10.3390/w15010005 http://hdl.handle.net/11449/246631 |
identifier_str_mv |
Water (Switzerland), v. 15, n. 1, 2023. 2073-4441 10.3390/w15010005 2-s2.0-85146117106 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Water (Switzerland) |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129524335902720 |