Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluation

Detalhes bibliográficos
Autor(a) principal: Vega Andrade, Priscila [UNESP]
Data de Publicação: 2021
Outros Autores: Palanca, Carolina Ferreira [UNESP], de Oliveira, Maria Alcionéia Carvalho [UNESP], Ito, Cristiane Yumi Koga [UNESP], dos Reis, Adriano Gonçalves [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.jwpe.2020.101859
http://hdl.handle.net/11449/205638
Resumo: This study aimed to evaluate the use of Moringa oleifera (MO) seed aqueous extract for tertiary treatment of a domestic wastewater by coagulation, flocculation, sedimentation, and rapid granular filtration. Jar tests with sand filter coupled were performed in secondary effluent samples with MO and alum dosages to evaluate the capacity to remove apparent color, turbidity, BOD, COD, TOC, nutrients, generated sludge, pH, and alkalinity consumption. Effects on the bacterial load (total coliforms and Escherichia coli), antibacterial activity in vitro (Escherichia coli Strain ATCC 25922), and cytotoxicity (Vero cells) were also evaluated. MO at the optimal dosage of 600 mg/L showed results statistically equal to the use of alum (200 mg/L), achieving bacterial load, turbidity, and apparent color removal higher than 99 %, 92 %, and 66 %, respectively. Differently from alum, the MO dosage increase did not consume alkalinity or change pH value. MO produced a more organic sludge, with total solids 1.8 times lower, and 3 times less bulky sludge than alum. Treatment with MO did not remove nutrients and increased organic matter (BOD, COD, and TOC). However, treatment with MO resulted in an effluent with less cytotoxicity, when compared with alum. MO did not show significant antibacterial activity, which may be related to the applied dosages. These results emphasized that MO seed aqueous extract has the potential to be used as a coagulant for domestic wastewater tertiary treatment, but a purification process of extracting cationic proteins from MO seeds is recommended when the effluent organic load is a concern.
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spelling Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluationAlumAntibacterial activityAqueous extractCoagulationZeta potentialThis study aimed to evaluate the use of Moringa oleifera (MO) seed aqueous extract for tertiary treatment of a domestic wastewater by coagulation, flocculation, sedimentation, and rapid granular filtration. Jar tests with sand filter coupled were performed in secondary effluent samples with MO and alum dosages to evaluate the capacity to remove apparent color, turbidity, BOD, COD, TOC, nutrients, generated sludge, pH, and alkalinity consumption. Effects on the bacterial load (total coliforms and Escherichia coli), antibacterial activity in vitro (Escherichia coli Strain ATCC 25922), and cytotoxicity (Vero cells) were also evaluated. MO at the optimal dosage of 600 mg/L showed results statistically equal to the use of alum (200 mg/L), achieving bacterial load, turbidity, and apparent color removal higher than 99 %, 92 %, and 66 %, respectively. Differently from alum, the MO dosage increase did not consume alkalinity or change pH value. MO produced a more organic sludge, with total solids 1.8 times lower, and 3 times less bulky sludge than alum. Treatment with MO did not remove nutrients and increased organic matter (BOD, COD, and TOC). However, treatment with MO resulted in an effluent with less cytotoxicity, when compared with alum. MO did not show significant antibacterial activity, which may be related to the applied dosages. These results emphasized that MO seed aqueous extract has the potential to be used as a coagulant for domestic wastewater tertiary treatment, but a purification process of extracting cationic proteins from MO seeds is recommended when the effluent organic load is a concern.São Paulo State University (Unesp) Institute of Science and Technology São José dos Campos Environmental Engineering DepartmentSão Paulo State University (Unesp) Institute of Science and Technology São José dos Campos Environmental Engineering DepartmentUniversidade Estadual Paulista (Unesp)Vega Andrade, Priscila [UNESP]Palanca, Carolina Ferreira [UNESP]de Oliveira, Maria Alcionéia Carvalho [UNESP]Ito, Cristiane Yumi Koga [UNESP]dos Reis, Adriano Gonçalves [UNESP]2021-06-25T10:18:47Z2021-06-25T10:18:47Z2021-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.jwpe.2020.101859Journal of Water Process Engineering, v. 40.2214-7144http://hdl.handle.net/11449/20563810.1016/j.jwpe.2020.1018592-s2.0-8509818767065435631614034210000-0002-2416-2173Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Water Process Engineeringinfo:eu-repo/semantics/openAccess2022-03-15T00:51:47Zoai:repositorio.unesp.br:11449/205638Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:13:37.896647Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluation
title Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluation
spellingShingle Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluation
Vega Andrade, Priscila [UNESP]
Alum
Antibacterial activity
Aqueous extract
Coagulation
Zeta potential
title_short Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluation
title_full Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluation
title_fullStr Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluation
title_full_unstemmed Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluation
title_sort Use of Moringa oleifera seed as a natural coagulant in domestic wastewater tertiary treatment: Physicochemical, cytotoxicity and bacterial load evaluation
author Vega Andrade, Priscila [UNESP]
author_facet Vega Andrade, Priscila [UNESP]
Palanca, Carolina Ferreira [UNESP]
de Oliveira, Maria Alcionéia Carvalho [UNESP]
Ito, Cristiane Yumi Koga [UNESP]
dos Reis, Adriano Gonçalves [UNESP]
author_role author
author2 Palanca, Carolina Ferreira [UNESP]
de Oliveira, Maria Alcionéia Carvalho [UNESP]
Ito, Cristiane Yumi Koga [UNESP]
dos Reis, Adriano Gonçalves [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Vega Andrade, Priscila [UNESP]
Palanca, Carolina Ferreira [UNESP]
de Oliveira, Maria Alcionéia Carvalho [UNESP]
Ito, Cristiane Yumi Koga [UNESP]
dos Reis, Adriano Gonçalves [UNESP]
dc.subject.por.fl_str_mv Alum
Antibacterial activity
Aqueous extract
Coagulation
Zeta potential
topic Alum
Antibacterial activity
Aqueous extract
Coagulation
Zeta potential
description This study aimed to evaluate the use of Moringa oleifera (MO) seed aqueous extract for tertiary treatment of a domestic wastewater by coagulation, flocculation, sedimentation, and rapid granular filtration. Jar tests with sand filter coupled were performed in secondary effluent samples with MO and alum dosages to evaluate the capacity to remove apparent color, turbidity, BOD, COD, TOC, nutrients, generated sludge, pH, and alkalinity consumption. Effects on the bacterial load (total coliforms and Escherichia coli), antibacterial activity in vitro (Escherichia coli Strain ATCC 25922), and cytotoxicity (Vero cells) were also evaluated. MO at the optimal dosage of 600 mg/L showed results statistically equal to the use of alum (200 mg/L), achieving bacterial load, turbidity, and apparent color removal higher than 99 %, 92 %, and 66 %, respectively. Differently from alum, the MO dosage increase did not consume alkalinity or change pH value. MO produced a more organic sludge, with total solids 1.8 times lower, and 3 times less bulky sludge than alum. Treatment with MO did not remove nutrients and increased organic matter (BOD, COD, and TOC). However, treatment with MO resulted in an effluent with less cytotoxicity, when compared with alum. MO did not show significant antibacterial activity, which may be related to the applied dosages. These results emphasized that MO seed aqueous extract has the potential to be used as a coagulant for domestic wastewater tertiary treatment, but a purification process of extracting cationic proteins from MO seeds is recommended when the effluent organic load is a concern.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-25T10:18:47Z
2021-06-25T10:18:47Z
2021-04-01
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/10.1016/j.jwpe.2020.101859
Journal of Water Process Engineering, v. 40.
2214-7144
http://hdl.handle.net/11449/205638
10.1016/j.jwpe.2020.101859
2-s2.0-85098187670
6543563161403421
0000-0002-2416-2173
url http://dx.doi.org/10.1016/j.jwpe.2020.101859
http://hdl.handle.net/11449/205638
identifier_str_mv Journal of Water Process Engineering, v. 40.
2214-7144
10.1016/j.jwpe.2020.101859
2-s2.0-85098187670
6543563161403421
0000-0002-2416-2173
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Water Process Engineering
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
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