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Adsorption for rhodamine b dye and biological activity of nano-porous chitosan from shrimp shells.
Pompeu, Lenise Deon; Muraro, Pâmela Cristine Ladwig; Chuy, Gabriela; Vizzotto, Bruno Stefanello; Pavoski, Giovani; Espinosa, Denise Crocce Romano; da Silva Fernandes, Liana; da Silva, William Leonardo.
Afiliação
  • Pompeu LD; Nanoscience Graduate Program, Franciscan University, Santa Maria, Rio Grande do Sul, Brazil.
  • Muraro PCL; Nanoscience Graduate Program, Franciscan University, Santa Maria, Rio Grande do Sul, Brazil.
  • Chuy G; Nanoscience Graduate Program, Franciscan University, Santa Maria, Rio Grande do Sul, Brazil.
  • Vizzotto BS; Nanoscience Graduate Program, Franciscan University, Santa Maria, Rio Grande do Sul, Brazil.
  • Pavoski G; Polytechnical School of Chemical Engineering, University of São Paulo, São Paulo, Brazil.
  • Espinosa DCR; Polytechnical School of Chemical Engineering, University of São Paulo, São Paulo, Brazil.
  • da Silva Fernandes L; Nanoscience Graduate Program, Franciscan University, Santa Maria, Rio Grande do Sul, Brazil.
  • da Silva WL; Nanoscience Graduate Program, Franciscan University, Santa Maria, Rio Grande do Sul, Brazil. williamleonardo_silva@hotmail.com.
Environ Sci Pollut Res Int ; 29(33): 49858-49869, 2022 Jul.
Article em En | MEDLINE | ID: mdl-35220543
The present work aims to evaluate the removal capacity of Rhodamine B dye (RhB) using nano-porous chitosan (NC) from shrimp shells. NC was characterized by XRD, SEM-EDS, N2 porosimetry, zeta potential (ZP), FTIR, DLS, and zero charge point (pHZCP). Compound central rotational design (CCRD) was used to determine the ideal condition and antimicrobial activity was evaluated against different strains. NC showed characteristic of semi-crystalline material with negative charge surface (around - 21.13 mV), and SBET = 1.12 m2 g-1, Vp = 0.0064 cm3 g-1, Dp = 32.09 nm and pHZCP ≈ 7.98. Kinetic adsorption showed the pseudo first-order model had the best fit, with adsorption capacity (q1) between 3.78 and 64.43 mg g-1 and pseudo first-order kinetic constant (k1) between 0.066 and 0.052 min-1. Sips model best described the equilibrium data, with a maximum adsorption capacity of 505.131 mg g-1. Antimicrobial activity was observed at 0.25 mg mL-1 for different strains. Therefore, NC has potential application in the removal of the dye, combining sustainable development associated with nanotechnology.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Quitosana / Anti-Infecciosos Tipo de estudo: Prognostic_studies Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Quitosana / Anti-Infecciosos Tipo de estudo: Prognostic_studies Idioma: En Revista: Environ Sci Pollut Res Int Assunto da revista: SAUDE AMBIENTAL / TOXICOLOGIA Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Alemanha