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Nanocellulose-based tannin-immobilized biosorbent for efficient copper ion removal.
Cordeiro, Lincoln Audrew; Soares, Aline Krolow; Missio, André Luiz; Carneiro, Mayara Elita Braz; de Muniz, Graciela Ines Bolzon; de Cademartori, Pedro Henrique Gonzalez.
Afiliação
  • Cordeiro LA; Graduate Program in Forest Engineering, Federal University of Paraná (UFPR), Curitiba 80210-170, Brazil.
  • Soares AK; Graduate Program in Engineering & Materials Science, Federal University of Paraná (UFPR), Polytechnic Center, Curitiba 81531-990, Brazil.
  • Missio AL; Graduate Program in Materials Science and Engineering (PPGCEM), Technology Development Center, Federal University of Pelotas (UFPel), Pelotas, Brazil.
  • Carneiro MEB; Graduate Program in Forest Engineering, Federal University of Paraná (UFPR), Curitiba 80210-170, Brazil.
  • de Muniz GIB; Graduate Program in Forest Engineering, Federal University of Paraná (UFPR), Curitiba 80210-170, Brazil.
  • de Cademartori PHG; Graduate Program in Forest Engineering, Federal University of Paraná (UFPR), Curitiba 80210-170, Brazil; Graduate Program in Engineering & Materials Science, Federal University of Paraná (UFPR), Polytechnic Center, Curitiba 81531-990, Brazil. Electronic address: pedroc@ufpr.br.
Int J Biol Macromol ; 253(Pt 1): 126635, 2023 Dec 31.
Article em En | MEDLINE | ID: mdl-37657571
Tannins, which are water-soluble polyhydroxyphenols found in plant structures, offer a sustainable alternative to inorganic products for treating effluents. To overcome their solubility in water, new methods have been developed to immobilize tannin on materials such as nanocellulose, resulting in tannin-based adsorbents. This study investigates the production of different types of tannin-based adsorbents immobilized on nanocellulose nanofibrils using glutaraldehyde as a crosslinking agent. The adsorbents were characterized for their morphology, chemical composition, tannin leaching, thermal stability, and copper adsorption capacity. The main results showed that tannin leaching from the adsorbents in water was greatly reduced with glutaraldehyde. Scanning electron microscopy images showed tannin coating on the surface of nanocellulose nanofibrils due to immobilization. The lyophilized adsorbent was effective in adsorbing Cu (II) within 1 min, with the adsorbed amount increasing gradually until stabilization after 45 min. Overall, this study suggests that tannin immobilized on nanofibrillated cellulose has the potential to offer a sustainable and renewable alternative for effluent treatment.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Cobre Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Cobre Idioma: En Ano de publicação: 2023 Tipo de documento: Article