Organosolv lignin/Fe3O4 nanoparticles applied as a β-glucosidase immobilization support and adsorbent for textile dye removal
| Author | Souza, Domingos Fabiano de Santana; Padilha, Carlos Eduardo de Araújo; Nogueira, Cleitiane da Costa; Oliveira, Jackson Araújo de; Santos, Everaldo Silvino dos | |
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| Publisher | Elsevier | |
| Date | 2020-04 | |
| Keywords | Biomass Lignin nanoparticles Enzymatic hydrolysis Biosorption | |
| Citation | ||
| Abstract | In this paper, the liquor obtained from organosolv pretreatment of green coconut fiber (GCF) was used for the synthesis of lignin/Fe3O4 nanoparticles. The coating of Fe3O4 nanoparticles was evaluated by X-ray and dynamic light scattering analysis. β-glucosidase immobilized on lignin/Fe3O4 nanoparticles by covalent bonding exhibited better stability than free enzyme. Compared to the free enzyme, β-glucosidase immobilized on lignin/Fe3O4 nanoparticles achieved good digestibility performance of crystalline cellulose (∼ 21.9 g/L reducing sugars) and delignified GCF (∼ 6.4 g/L reducing sugars). In adsorption experiments, lignin/Fe3O4 nanoparticles exhibited low equilibration time and high adsorption capacity of Methylene blue (203.66 mg/g), Cibacron blue (112.36 mg/g) and Remazol red (96.46 mg/g) dyes. After four cycles, the adsorption of the Methylene blue dye on lignin/Fe3O4 nanoparticles reduced 43.68 % using 0.1 M HCl as eluent | |
| URI | https://repositorio.ufrn.br/handle/123456789/45106 | |
| Collections | CT - DEQ - Artigos publicados em periódicos |
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