Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/245633
Share/Export:
logo share SHARE logo core CORE BASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Title

From unavoidable food waste to advanced biomaterials: microfibrilated lignocellulose production by microwave-assisted hydrothermal treatment of cassava peel and almond hull

AuthorsSulaeman, Allyn P.; Gao, Yang; Dugmore, Tom; Remón, Javier; Matharu, Avtar S.
KeywordsAlmond hulls
Cassava peel
Microfibrillated lignocellulose
Microwave hydrothermal
Issue Date28-Jun-2021
PublisherSpringer Nature
CitationCellulose 28: 7687-7705 (2021)
AbstractLignocellulose based nanomaterials are emerging green biosolids commonly obtained from wood pulp. Alternative feedstocks, such as as unavoidable food waste, are interesting resources for nano/microfibers. This research reports the production and characterization of microfibrillated lignocellulose (MFLC) from cassava peel (CP) and almond hull (AH) via acid-free microwave-assisted hydrothermal treatment (MHT) at different temperatures (120–220 °C). During processing, the structural changes were tracked by ATR-IR, TGA, XRD, 13C CPMAS NMR, zeta potential, HPLC, elemental analysis (CHN; carbon, hydrogen and nitrogen), TEM and SEM analyses. The microwave processing temperature and nature of feedstock exerted a significant influence on the yields and properties of the MFLCs produced. The MFLC yields from CP and AH shifted by 15–49% and 31–73%, respectively. Increasing the MHT temperature substantially affected the crystallinity index (13–66% for CP and 36–62% for AH) and thermal stability (300–374 °C for CP and 300–364 °C for AH) of the MFLCs produced. This suggested that the MFLC from CP is more fragile and brittle than that produced from AH. These phenomena influenced the gelation capabilities of the fibers. AH MFLC pretreated with ethanol at low temperature gave better film-forming capabilities, while untreated and heptane pretreated materials formed stable hydrogels at solid concentration (2% w/v). At high processing temperatures, the microfibrils were separated into elementary fibers, regardless of pretreatment or feedstock type. Given these data, this work demonstrates that the acid-free MHT processing of CP and AH is a facile method for producing MFLC with potential applications, including adsorption, packaging and the production of nanocomposites and personal care rheology modifiers.
Description4 figures.-- Supplementary information available.
Publisher version (URL)http://dx.doi.org/10.1007/s10570-021-03986-5
URIhttp://hdl.handle.net/10261/245633
DOI10.1007/s10570-021-03986-5
ISSN0969-0239
E-ISSN1572-882X
Appears in Collections:(ICB) Artículos

Files in This Item:
File Description SizeFormat
Cellulose_10.1007s10570-021-03986-5.pdfArtículo principal2 MBAdobe PDFThumbnail
View/Open
10570_2021_3986_MOESM1_ESM.docxInformación suplementaria18,17 MBMicrosoft Word XMLView/Open
Show full item record
Review this work

SCOPUSTM   
Citations

1
checked on Jan 18, 2022

WEB OF SCIENCETM
Citations

1
checked on Jan 18, 2022

Page view(s)

46
checked on Jan 23, 2022

Download(s)

30
checked on Jan 23, 2022

Google ScholarTM

Check

Altmetric

Dimensions


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.