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Screening of new adsorbents to remove algal organic matter from aqueous solutions: kinetic analyses and reduction of disinfection by-products formation.
Leite, Luan de Souza; Hoffmann, Maria Teresa; de Vicente, Fábio Simões; Dos Santos, Danilo Vitorino; Mesquita, Alexandre; Juliato, Felipe Bonganhi; Daniel, Luiz Antonio.
Afiliação
  • Leite LS; Department of Hydraulics and Sanitation, São Carlos School of Engineering, University of São Paulo, Av. Trabalhador São-Carlense, 400, São Carlos, São Paulo, 13566-59, Brazil. luanleite@usp.br.
  • Hoffmann MT; Department of Hydraulics and Sanitation, São Carlos School of Engineering, University of São Paulo, Av. Trabalhador São-Carlense, 400, São Carlos, São Paulo, 13566-59, Brazil.
  • de Vicente FS; Department of Physics, Institute of Geosciences and Exact Sciences, Sao Paulo State University (UNESP), Rio Claro, SP, 13506-900, Brazil.
  • Dos Santos DV; Laboratory of Chemical Residues, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
  • Mesquita A; Department of Physics, Institute of Geosciences and Exact Sciences, Sao Paulo State University (UNESP), Rio Claro, SP, 13506-900, Brazil.
  • Juliato FB; Department of Physics, Institute of Geosciences and Exact Sciences, Sao Paulo State University (UNESP), Rio Claro, SP, 13506-900, Brazil.
  • Daniel LA; Department of Hydraulics and Sanitation, São Carlos School of Engineering, University of São Paulo, Av. Trabalhador São-Carlense, 400, São Carlos, São Paulo, 13566-59, Brazil.
Environ Sci Pollut Res Int ; 30(2): 2800-2812, 2023 Jan.
Article em En | MEDLINE | ID: mdl-35941497
The algal organic matter (AOM) is a problem in water treatment. Although the adsorption process is extensively applied to drinking water treatment, little information is known about the potential of new adsorbents to remove AOM. Herein, this work evaluated the removal of AOM and its main compounds (dissolved organic carbon (DOC), carbohydrate, and protein) by new adsorbents-mesoporous silica (SBA-16), graphene oxide material from citric acid (CA), and sugar (SU), and a composite of CA immobilized on sand (GSC). In general, the removal efficiencies followed the order of SBA-16 > CA > SU or GSC for DOC, carbohydrate, and protein. At environmental condition (5 mg DOC·L-1 and pH 8), high removals were reported for SBA-16 (88.8% DOC, 80.0% carbohydrate, and 99.6% protein) and CA (70.0% DOC, 66.7% carbohydrate, and 89.7% protein), while moderate removals were found for SU (60.5% DOC, 47.9% carbohydrate, and 66.5% protein) and GSC (67.4% DOC, 60.8% carbohydrate, and 57.4% protein). Based on these results, further analyses were done with SBA-16 and CA. Both adsorbents' efficiencies decayed with the pH increment of the test water. Disinfection by-products reductions found using SBA-16 - trihalomethanes (58.2 to 94.7%) and chloral hydrate (48.7 to 78.8%) - were higher than the ones using CA-trihalomethanes (45.2 to 82.4%) and chloral hydrate (40.1 to 70.8%). This study showed the potential of applying these adsorbents for AOM removal, and further investigations are suggested to increase the adsorption capacity of these adsorbents.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Purificação da Água Tipo de estudo: Diagnostic_studies / Screening_studies Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha
Texto completo
Adicionar na Minha BVS
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XML
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Purificação da Água Tipo de estudo: Diagnostic_studies / Screening_studies Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha