Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UEPB |
Texto Completo: | http://tede.bc.uepb.edu.br/jspui/handle/tede/4411 |
Resumo: | This study addresses a new way of using a waste material, polyamide66, replacing it as a raw material in the production of membranes for treating textile effluents. Microfiltration membranes were prepared by phase inversion using polyamide66 (PA66) synthetic fiber residue from the automotive industry, and adding 1, 3, and 5% titanium dioxide (TiO2) to increase membrane porosity. The solutions and membrane films were evaluated with morphological characterization techniques and flux measurements. The viscosities of hybrid solutions increased with the increase in TiO2 content because it has a high surface available for adsorption in PA66 chains, promoting the formation of a mechanically stable suspension at a low shear rate. The AFM analysis showed that the pure and hybrid PA66 membranes have irregular surfaces confirmed by the roughness parameters, and this increase was directly proportional to the added content of TiO2. Field emission SEM analyses showed an increase in the porous surface of the membranes after TiO2 addition, confirmed in the porosity test, even though this addition has increased the density of the hybrid membranes. All the membranes with the addition of TiO2 showed lower values of contact angle when compared to the pure PA66 membrane, corresponding to higher hydrophilicity, due to the water absorption characteristic of the materials present. The tests of fluxes with water presented initially a decrease and then stability around 30 min, due to the compaction or swelling effects in the membranes, which followed until the end of the process, over 60 min. Given the above, it was possible to see that the introduction of TiO2 changed the rheological properties of the solutions and the morphology of the hybrid membranes. The roughness present in the hybrid membranes indicated a higher permeability, giving evidence of the existence of pores present on their surfaces. In addition, the inorganic load present provided an increase in permeate flux with water, with PA66/3% TiO2 membrane standing out. Effluents with the red dye at different concentrations were developed to evaluate the effect of particle loading on membrane flux on its removal efficiency. The results showed that as the concentration of red dye in the effluent increased, the permeate flux of the membrane decreased. However, the concentration of dye in the effluent did not affect the performance of the membranes in removing the dye, all compositions tested removed above 98% of dye from the produced permeate. In both tests, the best fluxes were produced at 1.5 bar pressure using the PA66/3% TiO2 membrane, and for the tests containing dye, all membranes made the highest permeate volume at 100 mg.L-1 red dye concentration. The permeate produced by all membranes met the tested water quality standards of color, pH, and turbidity. Therefore, hybrid membranes obtained present potential for post treatment effluents stage using textile dyes |
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Medeiros, Keila Machado dehttps://orcid.org/0000-0001-9250-1432http://lattes.cnpq.br/0536073936814089Marques, Ana Clara Lopeshttps://orcid.org/0000-0002-2947-1186Lima, Carlos Antônio Pereira dehttps://orcid.org/0000-0002-1301-6066http://lattes.cnpq.br/9217400486831036Lopes, Wilton Silvahttps://orcid.org/0000-0002-0151-7664http://lattes.cnpq.br/1493216651945826Carvalho, Laura Hecker dehttps://orcid.org/0000-0003-3118-0123http://lattes.cnpq.br/6358009621640820https://orcid.org/0000-0003-3890-6572http://lattes.cnpq.br/2334134424077916Rebouças, Larissa Dias2022-08-01T12:26:03Z2999-12-312022-06-30REBOUÇAS, Larissa Dias. Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis. 2022.116f. Dissertação (Programa de Pós-Graduação em Ciência e Tecnologia Ambiental - PPGCTA) - Universidade Estadual da Paraíba, Campina Grande, 2022.http://tede.bc.uepb.edu.br/jspui/handle/tede/4411This study addresses a new way of using a waste material, polyamide66, replacing it as a raw material in the production of membranes for treating textile effluents. Microfiltration membranes were prepared by phase inversion using polyamide66 (PA66) synthetic fiber residue from the automotive industry, and adding 1, 3, and 5% titanium dioxide (TiO2) to increase membrane porosity. The solutions and membrane films were evaluated with morphological characterization techniques and flux measurements. The viscosities of hybrid solutions increased with the increase in TiO2 content because it has a high surface available for adsorption in PA66 chains, promoting the formation of a mechanically stable suspension at a low shear rate. The AFM analysis showed that the pure and hybrid PA66 membranes have irregular surfaces confirmed by the roughness parameters, and this increase was directly proportional to the added content of TiO2. Field emission SEM analyses showed an increase in the porous surface of the membranes after TiO2 addition, confirmed in the porosity test, even though this addition has increased the density of the hybrid membranes. All the membranes with the addition of TiO2 showed lower values of contact angle when compared to the pure PA66 membrane, corresponding to higher hydrophilicity, due to the water absorption characteristic of the materials present. The tests of fluxes with water presented initially a decrease and then stability around 30 min, due to the compaction or swelling effects in the membranes, which followed until the end of the process, over 60 min. Given the above, it was possible to see that the introduction of TiO2 changed the rheological properties of the solutions and the morphology of the hybrid membranes. The roughness present in the hybrid membranes indicated a higher permeability, giving evidence of the existence of pores present on their surfaces. In addition, the inorganic load present provided an increase in permeate flux with water, with PA66/3% TiO2 membrane standing out. Effluents with the red dye at different concentrations were developed to evaluate the effect of particle loading on membrane flux on its removal efficiency. The results showed that as the concentration of red dye in the effluent increased, the permeate flux of the membrane decreased. However, the concentration of dye in the effluent did not affect the performance of the membranes in removing the dye, all compositions tested removed above 98% of dye from the produced permeate. In both tests, the best fluxes were produced at 1.5 bar pressure using the PA66/3% TiO2 membrane, and for the tests containing dye, all membranes made the highest permeate volume at 100 mg.L-1 red dye concentration. The permeate produced by all membranes met the tested water quality standards of color, pH, and turbidity. Therefore, hybrid membranes obtained present potential for post treatment effluents stage using textile dyesEste estudo aborda uma nova forma de utilização para um material de descarte, a Poliamida 66 (PA66), como matéria-prima para a produção de membranas aplicadas ao tratamento de efluentes têxteis. Membranas de microfiltração foram preparadas pela técnica de inversão de fases a partir do resíduo de fibra sintética de PA66 proveniente da indústria automobilística, adicionando 1, 3 e 5% de dióxido de titânio (TiO2) para melhorar a porosidade das membranas. Avaliaram-se os filmes de membranas por meio de técnicas de caracterização reológica, morfológica e medidas de fluxo. Os resultados indicam que as viscosidades das soluções híbridas aumentaram com o aumento no teor de TiO2 pois este promoveu a formação de uma suspensão mecanicamente estável em uma baixa taxa de cisalhamento. A análise de Microscopia de Força Atômica revelou que as membranas de PA66 pura e híbridas possuem superfícies irregulares confirmadas pelos parâmetros de rugosidade, e esse aumento foi diretamente proporcional ao teor de TiO2 adicionado. As análises de MEV por emissão de campo mostraram um aumento na superfície porosa das membranas após adição de TiO2, confirmado no teste de porosidade, mesmo que esse aditivo tenha aumentado a densidade das membranas híbridas. As membranas com adição de TiO2 apresentaram menores valores de ângulo de contato se comparado com a membrana de PA66 pura, correspondendo a uma maior hidrofilicidade, devido à característica de absorção de água dos materiais presentes. Os ensaios de fluxo com a água apresentaram inicialmente uma diminuição e, em seguida, estabilizaram em torno de 30 min de operação, devido à uma compactação ou a um inchamento ocorrido nas membranas, que seguiu até o fim do processo, ao longo de 60 min. Diante do exposto, foi constatado que a introdução do TiO2 alterou as propriedades reológicas das soluções, bem como a morfologia das membranas híbridas. As rugosidades e a permeabilidadedas membranas híbridas foram maiores do que a da membrana pura, indicando existência de poros nas suas superfícies. Além disso, a carga inorgânica incorporada proporcionou um aumento no fluxo permeado com água, com destaque para a membrana de PA66/3% TiO2. Produziu-se um efluente com corante em diferentes concentrações para avaliar o efeito do teor de partículas no fluxo das membranas em sua eficiência de remoção. Os resultados mostraram que à medida que a concentração de corante no efluente aumentava, o fluxo permeado da membrana diminuía. Porém, a concentração de corante no efluente produzido não afetou o rendimento das membranas em reter o corante, todas as composições testadas removeram acima de 98% de corante no permeado produzido. Em ambos os testes, os melhores fluxos foram produzidos na pressão de 1,5 bar, utilizando a membrana PA66/3% TiO2, sendo que para os testes contendo corante, todas as membranas produziram um maior volume de permeado na concentração de 100 mg.L-1 de corante vermelho. O permeado produzido por todas as membranas atende aos padrões de qualidade da água testa no que se refere à cor, pH e turbidez. Portanto, ficou constatado que as membranas híbridas obtidas apresentam potencial para o tratamento de corantes têxteis.Submitted by Larissa Rebouças (larirbcs@gmail.com) on 2022-07-22T00:41:39Z No. of bitstreams: 2 DS – Larissa Dias Rebouças.pdf: 2768878 bytes, checksum: 20e01384d6d0237f79d0ed94dd35df2d (MD5) Termo de confirmação e cadastramento.pdf: 144419 bytes, checksum: e64bbcfec0502cf5aae95a2779ee42a3 (MD5)Approved for entry into archive by Jean Medeiros (jeanletras@uepb.edu.br) on 2022-07-22T11:28:38Z (GMT) No. of bitstreams: 2 DS – Larissa Dias Rebouças.pdf: 2768878 bytes, checksum: 20e01384d6d0237f79d0ed94dd35df2d (MD5) Termo de confirmação e cadastramento.pdf: 144419 bytes, checksum: e64bbcfec0502cf5aae95a2779ee42a3 (MD5)Made available in DSpace on 2022-08-01T12:26:03Z (GMT). No. of bitstreams: 2 DS – Larissa Dias Rebouças.pdf: 2768878 bytes, checksum: 20e01384d6d0237f79d0ed94dd35df2d (MD5) Termo de confirmação e cadastramento.pdf: 144419 bytes, checksum: e64bbcfec0502cf5aae95a2779ee42a3 (MD5) Previous issue date: 2022-06-30Conselho Nacional de Desenvolvimento Científico e Tecnológico - CNPqapplication/pdfhttp://tede.bc.uepb.edu.br/jspui/retrieve/16493/DS%20%e2%80%93%20Larissa%20Dias%20Rebou%c3%a7as.pdf.jpghttp://tede.bc.uepb.edu.br/jspui/retrieve/16495/Termo%20de%20dep%c3%b3sito%20BDTD.jpgporUniversidade Estadual da ParaíbaPrograma de Pós-Graduação em Ciência e Tecnologia Ambiental - PPGCTAUEPBBrasilPró-Reitoria de Pós-Graduação e Pesquisa - PRPGPResíduo industrialMembranas híbridasInversão de fasesTratamento de efluentesIndustrial wasteEffluent treatmentPhase inversionHybrid membranesENGENHARIA SANITARIA::TRATAMENTO DE AGUAS DE ABASTECIMENTO E RESIDUARIASReutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteisinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis4424065786745700953600600600524871450381110278-4957377345672117885info:eu-repo/semantics/embargoedAccessreponame:Biblioteca Digital de Teses e Dissertações da UEPBinstname:Universidade Estadual da Paraíba (UEPB)instacron:UEPBTHUMBNAILDS – Larissa Dias Rebouças.pdf.jpgDS – Larissa Dias Rebouças.pdf.jpgimage/jpeg4223http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4411/10/DS+%E2%80%93+Larissa+Dias+Rebou%C3%A7as.pdf.jpg84898c39be3a48ec14e0ae08ecee6e74MD510Termo de depósito BDTD.jpgTermo de depósito BDTD.jpgimage/jpeg6641http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4411/12/Termo+de+dep%C3%B3sito+BDTD.jpgd9389e098e4d5b3489b60dd6f964c50bMD512TEXTDS – Larissa Dias Rebouças.pdf.txtDS – Larissa Dias Rebouças.pdf.txttext/plain220322http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4411/9/DS+%E2%80%93+Larissa+Dias+Rebou%C3%A7as.pdf.txte39f9f4ae53ad2aa470d9eb5d7d7c932MD59Termo de depósito BDTD.txtTermo de depósito BDTD.txttext/plain4569http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4411/11/Termo+de+dep%C3%B3sito+BDTD.txt2dc685c2221252df5e838d99b2b47686MD511LICENSElicense.txtlicense.txttext/plain; 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dc.title.por.fl_str_mv |
Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis |
title |
Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis |
spellingShingle |
Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis Rebouças, Larissa Dias Resíduo industrial Membranas híbridas Inversão de fases Tratamento de efluentes Industrial waste Effluent treatment Phase inversion Hybrid membranes ENGENHARIA SANITARIA::TRATAMENTO DE AGUAS DE ABASTECIMENTO E RESIDUARIAS |
title_short |
Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis |
title_full |
Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis |
title_fullStr |
Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis |
title_full_unstemmed |
Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis |
title_sort |
Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis |
author |
Rebouças, Larissa Dias |
author_facet |
Rebouças, Larissa Dias |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Medeiros, Keila Machado de |
dc.contributor.advisor1ID.fl_str_mv |
https://orcid.org/0000-0001-9250-1432 |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/0536073936814089 |
dc.contributor.advisor-co1.fl_str_mv |
Marques, Ana Clara Lopes |
dc.contributor.advisor-co1ID.fl_str_mv |
https://orcid.org/0000-0002-2947-1186 |
dc.contributor.referee1.fl_str_mv |
Lima, Carlos Antônio Pereira de |
dc.contributor.referee1ID.fl_str_mv |
https://orcid.org/0000-0002-1301-6066 |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/9217400486831036 |
dc.contributor.referee2.fl_str_mv |
Lopes, Wilton Silva |
dc.contributor.referee2ID.fl_str_mv |
https://orcid.org/0000-0002-0151-7664 |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/1493216651945826 |
dc.contributor.referee3.fl_str_mv |
Carvalho, Laura Hecker de |
dc.contributor.referee3ID.fl_str_mv |
https://orcid.org/0000-0003-3118-0123 |
dc.contributor.referee3Lattes.fl_str_mv |
http://lattes.cnpq.br/6358009621640820 |
dc.contributor.authorID.fl_str_mv |
https://orcid.org/0000-0003-3890-6572 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/2334134424077916 |
dc.contributor.author.fl_str_mv |
Rebouças, Larissa Dias |
contributor_str_mv |
Medeiros, Keila Machado de Marques, Ana Clara Lopes Lima, Carlos Antônio Pereira de Lopes, Wilton Silva Carvalho, Laura Hecker de |
dc.subject.por.fl_str_mv |
Resíduo industrial Membranas híbridas Inversão de fases Tratamento de efluentes |
topic |
Resíduo industrial Membranas híbridas Inversão de fases Tratamento de efluentes Industrial waste Effluent treatment Phase inversion Hybrid membranes ENGENHARIA SANITARIA::TRATAMENTO DE AGUAS DE ABASTECIMENTO E RESIDUARIAS |
dc.subject.eng.fl_str_mv |
Industrial waste Effluent treatment Phase inversion Hybrid membranes |
dc.subject.cnpq.fl_str_mv |
ENGENHARIA SANITARIA::TRATAMENTO DE AGUAS DE ABASTECIMENTO E RESIDUARIAS |
description |
This study addresses a new way of using a waste material, polyamide66, replacing it as a raw material in the production of membranes for treating textile effluents. Microfiltration membranes were prepared by phase inversion using polyamide66 (PA66) synthetic fiber residue from the automotive industry, and adding 1, 3, and 5% titanium dioxide (TiO2) to increase membrane porosity. The solutions and membrane films were evaluated with morphological characterization techniques and flux measurements. The viscosities of hybrid solutions increased with the increase in TiO2 content because it has a high surface available for adsorption in PA66 chains, promoting the formation of a mechanically stable suspension at a low shear rate. The AFM analysis showed that the pure and hybrid PA66 membranes have irregular surfaces confirmed by the roughness parameters, and this increase was directly proportional to the added content of TiO2. Field emission SEM analyses showed an increase in the porous surface of the membranes after TiO2 addition, confirmed in the porosity test, even though this addition has increased the density of the hybrid membranes. All the membranes with the addition of TiO2 showed lower values of contact angle when compared to the pure PA66 membrane, corresponding to higher hydrophilicity, due to the water absorption characteristic of the materials present. The tests of fluxes with water presented initially a decrease and then stability around 30 min, due to the compaction or swelling effects in the membranes, which followed until the end of the process, over 60 min. Given the above, it was possible to see that the introduction of TiO2 changed the rheological properties of the solutions and the morphology of the hybrid membranes. The roughness present in the hybrid membranes indicated a higher permeability, giving evidence of the existence of pores present on their surfaces. In addition, the inorganic load present provided an increase in permeate flux with water, with PA66/3% TiO2 membrane standing out. Effluents with the red dye at different concentrations were developed to evaluate the effect of particle loading on membrane flux on its removal efficiency. The results showed that as the concentration of red dye in the effluent increased, the permeate flux of the membrane decreased. However, the concentration of dye in the effluent did not affect the performance of the membranes in removing the dye, all compositions tested removed above 98% of dye from the produced permeate. In both tests, the best fluxes were produced at 1.5 bar pressure using the PA66/3% TiO2 membrane, and for the tests containing dye, all membranes made the highest permeate volume at 100 mg.L-1 red dye concentration. The permeate produced by all membranes met the tested water quality standards of color, pH, and turbidity. Therefore, hybrid membranes obtained present potential for post treatment effluents stage using textile dyes |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-08-01T12:26:03Z |
dc.date.issued.fl_str_mv |
2022-06-30 |
dc.date.available.fl_str_mv |
2999-12-31 |
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info:eu-repo/semantics/publishedVersion |
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masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
REBOUÇAS, Larissa Dias. Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis. 2022.116f. Dissertação (Programa de Pós-Graduação em Ciência e Tecnologia Ambiental - PPGCTA) - Universidade Estadual da Paraíba, Campina Grande, 2022. |
dc.identifier.uri.fl_str_mv |
http://tede.bc.uepb.edu.br/jspui/handle/tede/4411 |
identifier_str_mv |
REBOUÇAS, Larissa Dias. Reutilização de fios de poliamida na obtenção de membranas para o tratamento de efluentes contendo corantes têxteis. 2022.116f. Dissertação (Programa de Pós-Graduação em Ciência e Tecnologia Ambiental - PPGCTA) - Universidade Estadual da Paraíba, Campina Grande, 2022. |
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http://tede.bc.uepb.edu.br/jspui/handle/tede/4411 |
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por |
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por |
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embargoedAccess |
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Universidade Estadual da Paraíba |
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UEPB |
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Brasil |
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Pró-Reitoria de Pós-Graduação e Pesquisa - PRPGP |
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Universidade Estadual da Paraíba |
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