Physicochemical characterization and evaluation of PGA bioflocculant in coagulation-flocculation and sedimentation processes

Detalhes bibliográficos
Autor(a) principal: Campos, Valquíria [UNESP]
Data de Publicação: 2016
Outros Autores: Fernandes, Ana R.A.C. [UNESP], Medeiros, Thales. A.M. [UNESP], Andrade, Erik L. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1016/j.jece.2016.08.011
http://hdl.handle.net/11449/168936
Resumo: This paper analyzesanalyses the effectiveness of three commercial products: aluminum sulfate, aluminum polychloride and polyglutamic acid-based bioflocculant, in water clarification and purification. Poly-γ-glutamic acid (PGA), a naturally occurring anionic polymer, is already produced on an industrial scale. A conventional jar test apparatus was used for flocculation experiments. The tests were performed using raw water from the Salto de Pirapora Water Treatment Plant (WTP) in the state of São Paulo, Brazil. The structure and elemental composition of PGA bioflocculant, which was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray fluorescence spectrometry (XRF) and thermogravimetric analysis (TGA), suggests that it is basically inorganic in nature, with high contents of calcium sulfate (87%) and γ-polyglutamic acid (5%), among other chemical compounds. The performance of PGA bioflocculant was superior to that of the other coagulants. In the dry season, 80 mg L-1 of PGα21Ca removed 89.74% of apparent color, and residual turbidity was 5.78 NTU. In the rainy season, 90 mg L-1 of PGα21Ca removed 96.89% of apparent color and residual turbidity was 1.93 NTU.
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spelling Physicochemical characterization and evaluation of PGA bioflocculant in coagulation-flocculation and sedimentation processesAluminum sulfatePGA bioflocculantPolyaluminum chlorideSalto de pirapora WTPSão pauloThis paper analyzesanalyses the effectiveness of three commercial products: aluminum sulfate, aluminum polychloride and polyglutamic acid-based bioflocculant, in water clarification and purification. Poly-γ-glutamic acid (PGA), a naturally occurring anionic polymer, is already produced on an industrial scale. A conventional jar test apparatus was used for flocculation experiments. The tests were performed using raw water from the Salto de Pirapora Water Treatment Plant (WTP) in the state of São Paulo, Brazil. The structure and elemental composition of PGA bioflocculant, which was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray fluorescence spectrometry (XRF) and thermogravimetric analysis (TGA), suggests that it is basically inorganic in nature, with high contents of calcium sulfate (87%) and γ-polyglutamic acid (5%), among other chemical compounds. The performance of PGA bioflocculant was superior to that of the other coagulants. In the dry season, 80 mg L-1 of PGα21Ca removed 89.74% of apparent color, and residual turbidity was 5.78 NTU. In the rainy season, 90 mg L-1 of PGα21Ca removed 96.89% of apparent color and residual turbidity was 1.93 NTU.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Instituto de Ciência e Tecnologia de Sorocaba UNESP Univ Estadual PaulistaInstituto de Ciência e Tecnologia de Sorocaba UNESP Univ Estadual PaulistaFAPESP: 2015/02650-8Universidade Estadual Paulista (Unesp)Campos, Valquíria [UNESP]Fernandes, Ana R.A.C. [UNESP]Medeiros, Thales. A.M. [UNESP]Andrade, Erik L. [UNESP]2018-12-11T16:43:41Z2018-12-11T16:43:41Z2016-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article3753-3760application/pdfhttp://dx.doi.org/10.1016/j.jece.2016.08.011Journal of Environmental Chemical Engineering, v. 4, n. 4, p. 3753-3760, 2016.2213-3437http://hdl.handle.net/11449/16893610.1016/j.jece.2016.08.0112-s2.0-849848463932-s2.0-84984846393.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of Environmental Chemical Engineering0,924info:eu-repo/semantics/openAccess2023-12-19T06:20:56Zoai:repositorio.unesp.br:11449/168936Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T20:44:41.414014Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Physicochemical characterization and evaluation of PGA bioflocculant in coagulation-flocculation and sedimentation processes
title Physicochemical characterization and evaluation of PGA bioflocculant in coagulation-flocculation and sedimentation processes
spellingShingle Physicochemical characterization and evaluation of PGA bioflocculant in coagulation-flocculation and sedimentation processes
Campos, Valquíria [UNESP]
Aluminum sulfate
PGA bioflocculant
Polyaluminum chloride
Salto de pirapora WTP
São paulo
title_short Physicochemical characterization and evaluation of PGA bioflocculant in coagulation-flocculation and sedimentation processes
title_full Physicochemical characterization and evaluation of PGA bioflocculant in coagulation-flocculation and sedimentation processes
title_fullStr Physicochemical characterization and evaluation of PGA bioflocculant in coagulation-flocculation and sedimentation processes
title_full_unstemmed Physicochemical characterization and evaluation of PGA bioflocculant in coagulation-flocculation and sedimentation processes
title_sort Physicochemical characterization and evaluation of PGA bioflocculant in coagulation-flocculation and sedimentation processes
author Campos, Valquíria [UNESP]
author_facet Campos, Valquíria [UNESP]
Fernandes, Ana R.A.C. [UNESP]
Medeiros, Thales. A.M. [UNESP]
Andrade, Erik L. [UNESP]
author_role author
author2 Fernandes, Ana R.A.C. [UNESP]
Medeiros, Thales. A.M. [UNESP]
Andrade, Erik L. [UNESP]
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Campos, Valquíria [UNESP]
Fernandes, Ana R.A.C. [UNESP]
Medeiros, Thales. A.M. [UNESP]
Andrade, Erik L. [UNESP]
dc.subject.por.fl_str_mv Aluminum sulfate
PGA bioflocculant
Polyaluminum chloride
Salto de pirapora WTP
São paulo
topic Aluminum sulfate
PGA bioflocculant
Polyaluminum chloride
Salto de pirapora WTP
São paulo
description This paper analyzesanalyses the effectiveness of three commercial products: aluminum sulfate, aluminum polychloride and polyglutamic acid-based bioflocculant, in water clarification and purification. Poly-γ-glutamic acid (PGA), a naturally occurring anionic polymer, is already produced on an industrial scale. A conventional jar test apparatus was used for flocculation experiments. The tests were performed using raw water from the Salto de Pirapora Water Treatment Plant (WTP) in the state of São Paulo, Brazil. The structure and elemental composition of PGA bioflocculant, which was characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray fluorescence spectrometry (XRF) and thermogravimetric analysis (TGA), suggests that it is basically inorganic in nature, with high contents of calcium sulfate (87%) and γ-polyglutamic acid (5%), among other chemical compounds. The performance of PGA bioflocculant was superior to that of the other coagulants. In the dry season, 80 mg L-1 of PGα21Ca removed 89.74% of apparent color, and residual turbidity was 5.78 NTU. In the rainy season, 90 mg L-1 of PGα21Ca removed 96.89% of apparent color and residual turbidity was 1.93 NTU.
publishDate 2016
dc.date.none.fl_str_mv 2016-12-01
2018-12-11T16:43:41Z
2018-12-11T16:43:41Z
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.jece.2016.08.011
Journal of Environmental Chemical Engineering, v. 4, n. 4, p. 3753-3760, 2016.
2213-3437
http://hdl.handle.net/11449/168936
10.1016/j.jece.2016.08.011
2-s2.0-84984846393
2-s2.0-84984846393.pdf
url http://dx.doi.org/10.1016/j.jece.2016.08.011
http://hdl.handle.net/11449/168936
identifier_str_mv Journal of Environmental Chemical Engineering, v. 4, n. 4, p. 3753-3760, 2016.
2213-3437
10.1016/j.jece.2016.08.011
2-s2.0-84984846393
2-s2.0-84984846393.pdf
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal of Environmental Chemical Engineering
0,924
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 3753-3760
application/pdf
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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