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Environmentally dependent adsorption of 2,4-dichlorophenol on cellulose-chitosan self-assembled composites.
Gomez-Maldonado, Diego; Filpponen, Ilari; Johansson, Leena-Sisko; Waters, Matthew N; Vega Erramuspe, Iris Beatriz; Peresin, Maria S.
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  • Gomez-Maldonado D; Forest Products Development Center, School of Forestry and Wildlife Science, Auburn University, Auburn, Alabama, USA.
  • Filpponen I; Forest Products Development Center, School of Forestry and Wildlife Science, Auburn University, Auburn, Alabama, USA.
  • Johansson LS; Department of Chemical Engineering, Alabama Center for Paper and Bioresource Engineering (AC-PABE), Auburn University, Auburn, Alabama, USA.
  • Waters MN; Department of Bioprocesses and Biosystems, School of Chemical Engineering, Aalto University, Espoo, Finland.
  • Vega Erramuspe IB; Department of Crop, Soil and Environmental Sciences, Auburn University, Auburn, Alabama, USA.
  • Peresin MS; Forest Products Development Center, School of Forestry and Wildlife Science, Auburn University, Auburn, Alabama, USA.
Biopolymers ; 112(8): e23434, 2021 Aug.
Article en En | MEDLINE | ID: mdl-34000071
With the increasing need for bio-based materials developed by environmentally friendly procedures, this work shows a green method to develop shape-controlled structures from cellulose dissolving pulp coated by chitosan. This material was then tested to adsorb a common and widespread pollutant, 2,4-dichlorophenol under different pH conditions (5.5 and 9). Herein it was noticed that the adsorption only occurred in acidic pH (5.5) where electrostatic interaction drove the adsorption, demonstrating the potential to tune the response under desired conditions only. The adsorption was successful in the hydrogel structure with an adsorption capacity of 905 ± 71 mg/g from a solution with 16.6 ppm; furthermore, adsorption was also possible with dried hydrogel structures, presenting a maximum of adsorption of 646 ± 50 mg/g in a similar 16.6 ppm solution. Finally, adsorbent regeneration was successfully tested for both, dry (rewetted) and never-dried states, showing improved adsorption after regeneration in the case of the never dried hydrogel structures.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Quitosano Idioma: En Revista: Biopolymers Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos
Texto completo
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Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Contaminantes Químicos del Agua / Quitosano Idioma: En Revista: Biopolymers Año: 2021 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos