Physicochemical characterization and evaluation of PGA bioflocculant in coagulation-flocculation and sedimentation processes
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , |
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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Repositório Institucional da UNESP |
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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 |
|
_version_ |
1808129240635277312 |