Physical-chemical study of effects of functional groups on adsorption of naphthalene and its derivatives onto high-density polyethylene microplastics
Ano de defesa: | 2023 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | eng |
Instituição de defesa: |
Universidade Federal de Santa Maria
Centro de Ciências Naturais e Exatas |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Química
|
Departamento: |
Química
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/28120 |
Resumo: | Microplastics (MP) have received great attention due to the mass-produced residues discharged into the environment. MP are ideal for adhering to organic pollutants that can be easily dispersed, thus posing risks to human health. Furthermore, little has been reported on how different functional groups in polycyclic aromatic hydrocarbons (PAH) derivatives influence the adsorption behavior on MP. To better understand this process, groups methyl (–CH3) and hydroxyl (–OH) were selected and commercial and waste high-density polyethylene (HDPE, ≤ 1mm) were used as adsorbents, and Naphthalene (Nap), 1-Methyl-Naphthalene (Me-Nap) and α-Naphthol as adsorbates. The results showed different behaviors for nonpolar and polar adsorbates. Dispersion forces were the main type of interaction between HDPE and Nap/Me-Nap, while dipole-induced dipole forces and H-bonding were the chief interactions involving MP and polar compounds. Regardless the HDPE source, Nap and Me-Nap have a Type III isotherm, and α-Naphthol presents a Type II isotherm. Nap and Me-Nap fitted to Freundlich isotherm of an unfavorable process (�� = 2.12 and 1.11; 1.87 and 1.31, respectively), with positive values of ����° (50 and 77.17; 66 and 64.63 kJ mol−1 ) and ����° (0.070 and 0.0145; 0.122 and 0.103 kJ mol−1 ) for commercial and waste MP, respectively. Besides, the adsorption isotherm of α-Naphthol on commercial and waste HDPE fitted to the Langmuir model (��max = 42.5 and 27.2 µmol g−1 , respectively), presenting negative values of ����°(−43.71 and −44.10 kJ mol−1 ) and ����° (−0.037 and −0.025 kJ mol−1 ). The adsorption kinetic study presents a nonlinear pseudo-second-order model for all cases. The ��2 values follow the order Me-Nap > Nap > α-Naphthol in both MP. Therefore, this experimental study provides new insights into the affinity of PAH derivatives for a specific class of MP, helping to understand the environmental fate of residual MP and organic pollutants. |
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2023-03-08T15:01:29Z2023-03-08T15:01:29Z2023-03-15http://repositorio.ufsm.br/handle/1/28120Microplastics (MP) have received great attention due to the mass-produced residues discharged into the environment. MP are ideal for adhering to organic pollutants that can be easily dispersed, thus posing risks to human health. Furthermore, little has been reported on how different functional groups in polycyclic aromatic hydrocarbons (PAH) derivatives influence the adsorption behavior on MP. To better understand this process, groups methyl (–CH3) and hydroxyl (–OH) were selected and commercial and waste high-density polyethylene (HDPE, ≤ 1mm) were used as adsorbents, and Naphthalene (Nap), 1-Methyl-Naphthalene (Me-Nap) and α-Naphthol as adsorbates. The results showed different behaviors for nonpolar and polar adsorbates. Dispersion forces were the main type of interaction between HDPE and Nap/Me-Nap, while dipole-induced dipole forces and H-bonding were the chief interactions involving MP and polar compounds. Regardless the HDPE source, Nap and Me-Nap have a Type III isotherm, and α-Naphthol presents a Type II isotherm. Nap and Me-Nap fitted to Freundlich isotherm of an unfavorable process (�� = 2.12 and 1.11; 1.87 and 1.31, respectively), with positive values of ����° (50 and 77.17; 66 and 64.63 kJ mol−1 ) and ����° (0.070 and 0.0145; 0.122 and 0.103 kJ mol−1 ) for commercial and waste MP, respectively. Besides, the adsorption isotherm of α-Naphthol on commercial and waste HDPE fitted to the Langmuir model (��max = 42.5 and 27.2 µmol g−1 , respectively), presenting negative values of ����°(−43.71 and −44.10 kJ mol−1 ) and ����° (−0.037 and −0.025 kJ mol−1 ). The adsorption kinetic study presents a nonlinear pseudo-second-order model for all cases. The ��2 values follow the order Me-Nap > Nap > α-Naphthol in both MP. Therefore, this experimental study provides new insights into the affinity of PAH derivatives for a specific class of MP, helping to understand the environmental fate of residual MP and organic pollutants.Os microplásticos (MP) têm recebido grande atenção devido aos resíduos produzidos em massa lançados no meio ambiente. MP são ideais para aderir a poluentes orgânicos que podem ser facilmente dispersos, oferecendo riscos à saúde humana. Além disso, pouco foi relatado sobre como diferentes grupos funcionais em derivados de hidrocarbonetos policíclicos aromáticos (HPA) influenciam o comportamento de adsorção em MP. Para entender melhor esse processo, os grupos metil (–CH3) e hidroxila (–OH) foram selecionados e polietileno de alta densidade comercial e residual (PEAD, ≤ 1mm) foram usados como adsorventes, e Naftaleno (Naf), 1-Metil-Naftaleno (Me-Naf) e α-Naftol como adsorvatos. Os resultados mostraram comportamentos diferentes para adsorvatos apolares e polares. Forças de dispersão foram o principal tipo de interação entre PEAD e Naf/Me-Naf, enquanto forças dipolo-induzidas e ligações de hidrogênio foram as principais interações envolvendo MP e compostos polares. Independente da fonte de PEAD, Naf e Me-Naf possuem isoterma Tipo III, e α-Naftol apresenta isoterma Tipo II. Naf e Me-Naf ajustados à isoterma de Freundlich com um processo desfavorável (n = 2,12 e 1,11; 1,87 e 1,31, respectivamente), com valores positivos de ° (50 e 77,17; 66 e 64,63 kJ mol−1 ) e ° (0,070 e 0,0145; 0,122 e 0,103 kJ mol−1 ) para MP comercial e de residual, respectivamente. Além disso, a isoterma de adsorção de α-Naftol em PEAD comercial e residual ajustada ao modelo de Langmuir (= 42,5 e 27,2 µmol g−1 , respectivamente), apresentando valores negativos de ° (−43,71 e −44,10 kJ mol−1 ) e ° (−0,037 e −0,025 kJ mol−1 ). O estudo da cinética de adsorção apresenta um modelo não linear de pseudo-segunda ordem para todos os casos. Os valores de 2 seguem a ordem Me-Naf > Naf > α-Naftol em ambos MP. Portanto, este estudo experimental fornece novos insights sobre a afinidade de derivados de HPA para uma classe específica de MP, ajudando a entender o destino ambiental de MP residual e poluentes orgânicos.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESengUniversidade Federal de Santa MariaCentro de Ciências Naturais e ExatasPrograma de Pós-Graduação em QuímicaUFSMBrasilQuímicaAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessMicroplásticos de PEADMecanismos de adsorçãoDerivados de NafGrupos funcionaisHDPE microplasticsAdsorption mechanismsNap derivativesFunctional groupsCNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICAPhysical-chemical study of effects of functional groups on adsorption of naphthalene and its derivatives onto high-density polyethylene microplasticsEstudo físico-químico dos efeitos de grupos funcionais no comportamento de adsorção de naftaleno e seus derivados em microplásticos de polietileno de alta densidadeinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisRosa, Marcelo Barcellos dahttp://lattes.cnpq.br/0308293154958870Mortari, Sérgio RobertoDotto, Guilherme Luizhttp://lattes.cnpq.br/7775871625917662Funari Junior, Ronaldo Antunes1006000000006006006006006008b5ece49-3859-41c1-a27a-94fe03364b5a57227b1e-00f1-42ad-8ce6-7b1ed1e532997e27f0ed-3de3-4398-b0a4-87a2c75ba9e9ce06dd92-4d22-48c9-8063-6c0dc6c33b8ereponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMCC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.eng.fl_str_mv |
Physical-chemical study of effects of functional groups on adsorption of naphthalene and its derivatives onto high-density polyethylene microplastics |
dc.title.alternative.por.fl_str_mv |
Estudo físico-químico dos efeitos de grupos funcionais no comportamento de adsorção de naftaleno e seus derivados em microplásticos de polietileno de alta densidade |
title |
Physical-chemical study of effects of functional groups on adsorption of naphthalene and its derivatives onto high-density polyethylene microplastics |
spellingShingle |
Physical-chemical study of effects of functional groups on adsorption of naphthalene and its derivatives onto high-density polyethylene microplastics Funari Junior, Ronaldo Antunes Microplásticos de PEAD Mecanismos de adsorção Derivados de Naf Grupos funcionais HDPE microplastics Adsorption mechanisms Nap derivatives Functional groups CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA |
title_short |
Physical-chemical study of effects of functional groups on adsorption of naphthalene and its derivatives onto high-density polyethylene microplastics |
title_full |
Physical-chemical study of effects of functional groups on adsorption of naphthalene and its derivatives onto high-density polyethylene microplastics |
title_fullStr |
Physical-chemical study of effects of functional groups on adsorption of naphthalene and its derivatives onto high-density polyethylene microplastics |
title_full_unstemmed |
Physical-chemical study of effects of functional groups on adsorption of naphthalene and its derivatives onto high-density polyethylene microplastics |
title_sort |
Physical-chemical study of effects of functional groups on adsorption of naphthalene and its derivatives onto high-density polyethylene microplastics |
author |
Funari Junior, Ronaldo Antunes |
author_facet |
Funari Junior, Ronaldo Antunes |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Rosa, Marcelo Barcellos da |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/0308293154958870 |
dc.contributor.referee1.fl_str_mv |
Mortari, Sérgio Roberto |
dc.contributor.referee2.fl_str_mv |
Dotto, Guilherme Luiz |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/7775871625917662 |
dc.contributor.author.fl_str_mv |
Funari Junior, Ronaldo Antunes |
contributor_str_mv |
Rosa, Marcelo Barcellos da Mortari, Sérgio Roberto Dotto, Guilherme Luiz |
dc.subject.por.fl_str_mv |
Microplásticos de PEAD Mecanismos de adsorção Derivados de Naf Grupos funcionais |
topic |
Microplásticos de PEAD Mecanismos de adsorção Derivados de Naf Grupos funcionais HDPE microplastics Adsorption mechanisms Nap derivatives Functional groups CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA |
dc.subject.eng.fl_str_mv |
HDPE microplastics Adsorption mechanisms Nap derivatives Functional groups |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS EXATAS E DA TERRA::QUIMICA |
description |
Microplastics (MP) have received great attention due to the mass-produced residues discharged into the environment. MP are ideal for adhering to organic pollutants that can be easily dispersed, thus posing risks to human health. Furthermore, little has been reported on how different functional groups in polycyclic aromatic hydrocarbons (PAH) derivatives influence the adsorption behavior on MP. To better understand this process, groups methyl (–CH3) and hydroxyl (–OH) were selected and commercial and waste high-density polyethylene (HDPE, ≤ 1mm) were used as adsorbents, and Naphthalene (Nap), 1-Methyl-Naphthalene (Me-Nap) and α-Naphthol as adsorbates. The results showed different behaviors for nonpolar and polar adsorbates. Dispersion forces were the main type of interaction between HDPE and Nap/Me-Nap, while dipole-induced dipole forces and H-bonding were the chief interactions involving MP and polar compounds. Regardless the HDPE source, Nap and Me-Nap have a Type III isotherm, and α-Naphthol presents a Type II isotherm. Nap and Me-Nap fitted to Freundlich isotherm of an unfavorable process (�� = 2.12 and 1.11; 1.87 and 1.31, respectively), with positive values of ����° (50 and 77.17; 66 and 64.63 kJ mol−1 ) and ����° (0.070 and 0.0145; 0.122 and 0.103 kJ mol−1 ) for commercial and waste MP, respectively. Besides, the adsorption isotherm of α-Naphthol on commercial and waste HDPE fitted to the Langmuir model (��max = 42.5 and 27.2 µmol g−1 , respectively), presenting negative values of ����°(−43.71 and −44.10 kJ mol−1 ) and ����° (−0.037 and −0.025 kJ mol−1 ). The adsorption kinetic study presents a nonlinear pseudo-second-order model for all cases. The ��2 values follow the order Me-Nap > Nap > α-Naphthol in both MP. Therefore, this experimental study provides new insights into the affinity of PAH derivatives for a specific class of MP, helping to understand the environmental fate of residual MP and organic pollutants. |
publishDate |
2023 |
dc.date.accessioned.fl_str_mv |
2023-03-08T15:01:29Z |
dc.date.available.fl_str_mv |
2023-03-08T15:01:29Z |
dc.date.issued.fl_str_mv |
2023-03-15 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/28120 |
url |
http://repositorio.ufsm.br/handle/1/28120 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.cnpq.fl_str_mv |
100600000000 |
dc.relation.confidence.fl_str_mv |
600 600 600 600 600 |
dc.relation.authority.fl_str_mv |
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dc.rights.driver.fl_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Naturais e Exatas |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Química |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Química |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Ciências Naturais e Exatas |
dc.source.none.fl_str_mv |
reponame:Manancial - Repositório Digital da UFSM instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
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