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Lookup NU author(s): Dr Chun Yang Yin
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© 2020, Springer Nature B.V.Abstract: Cellulose nanofibrils (CNFs) produced from waste lignocellulosic biomass have emerged as a sustainable source material for high value-added applications. In the current study, previously unreported entangled cellulose nanofibril and nanosheet (CNF/CNS) were obtained using Agave Tequilana Weber var. Azul leaves by means of a microfluidization process. These nanomaterials were investigated as potential biosorbents of Pb2+, for which three adsorption mechanisms were identified by XPS. At low initial concentrations of Pb2+ (C0 < 100 ppm), the adsorption-mechanism is governed by electrostatic interactions between carboxylate groups and Pb2+; meanwhile, at (C0 = 1000 ppm) mono and bi-dentate complexes dominate the adsorption-mechanism. Finally, when 110 < C0 < 1000 ppm, both mechanisms co-exist. The maximum adsorption capacity was 43.55 mg/g, according to the Langmuir model, while CNF/CNS showed the characteristic diffraction peaks of cellulose type II. Our results highlight the high potential of these novel CNF/CNS biosorbents in the treatment of wastewater contaminated with toxic metals and afford new insights on adsorption mechanisms. Graphic abstract: [Figure not available: see fulltext.]
Author(s): Hernandez-Francisco E, Bonilla-Cruz J, Marquez-Lamas U, Suarez-Jacobo A, Longoria-Rodriguez F, Rivera-Haro J, Russell P, Ali Z, Yin C-Y, Lara-Ceniceros TE
Publication type: Article
Publication status: Published
Journal: Cellulose
Year: 2020
Volume: 27
Pages: 8785–8798
Print publication date: 01/10/2020
Online publication date: 10/08/2020
Acceptance date: 02/04/2016
ISSN (print): 0969-0239
ISSN (electronic): 1572-882X
Publisher: Springer
URL: https://doi.org/10.1007/s10570-020-03373-6
DOI: 10.1007/s10570-020-03373-6
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