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Unveiling the mechanistic aspects of methylene blue adsorption onto a novel phosphate-decorated coconut fiber lignin.
Araújo, Rayanne Ferreira; Bezerra, Luiz Carlos Alves; de Novais, Leice Milla Ribeiro; D'Oca, Caroline Da Ros Montes; Avelino, Francisco.
Afiliação
  • Araújo RF; Department of Research, Extension and Production, Federal Institute of Education, Science and Technology of Ceará, 63503-790 Iguatu, CE, Brazil.
  • Bezerra LCA; Department of Research, Extension and Production, Federal Institute of Education, Science and Technology of Ceará, 63503-790 Iguatu, CE, Brazil.
  • de Novais LMR; NMR Lab, Department of Chemistry, Federal University of Paraná, 81530-900 Curitiba, PR, Brazil.
  • D'Oca CDRM; NMR Lab, Department of Chemistry, Federal University of Paraná, 81530-900 Curitiba, PR, Brazil.
  • Avelino F; Department of Research, Extension and Production, Federal Institute of Education, Science and Technology of Ceará, 63503-790 Iguatu, CE, Brazil. Electronic address: francisco.avelino@ifce.edu.br.
Int J Biol Macromol ; 253(Pt 4): 127011, 2023 Dec 31.
Article em En | MEDLINE | ID: mdl-37742897
The aim of this work was to evaluate the adsorptive performance of the phosphorylated coconut fiber lignin (PCFL) obtained through an innovative biorefinery process for removing methylene blue (MB). PCFL was obtained using coconut fiber mixed with 85 % wt. H3PO4 at 70 °C for 1 h. Milled wood lignin (MWL) and PCFL were characterized by FTIR, CP-MAS 31P NMR, phosphorous and hydroxyl contents, pHPZC, and BET analyses. The batch adsorption tests evaluated the effects of the biosorbent (0.25 - 4 g L-1) and adsorbate dosages (2.5 - 7.5 mg L-1), contact time (0 - 60 min), pH (4 - 8), ionic strength (0.001 - 0.1 mol L-1) and temperature (298.15 - 318.15 K) on MB adsorption. Kinetic, equilibrium, and thermodynamic modeling were used. The phosphorous content on PCFL was 2.5 times higher than that of MWL. PCFL presented an enhanced adsorptive performance for removing MB, which was spontaneous (ΔG0 < 0), endothermic (ΔH0 > 0), with affinity between the biosorbent and adsorbate (ΔS0 > 0), and driven by physisorption (Ea > 40 kJ mol-1). The adsorptive performance of PCFL was enhanced due to the grafting of new active sites by using an innovative biorefinery process, showing its potential to be used for textile effluent remediation.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Lignina Idioma: En Revista: Int J Biol Macromol Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Lignina Idioma: En Revista: Int J Biol Macromol Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda