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Entangled cellulose nanofibrils/nanosheets derived from native mexican agave for lead(II) ion removal

Lookup NU author(s): Professor Chun Yang Yin

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Abstract

© 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.]


Publication metadata

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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