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Potential of municipal solid waste paper as raw material for production of cellulose nanofibres
Fibre and Particle Engineering Research Unit, Faculty of Technology, University of Oulu, Oulu, Finland.
Fibre and Particle Engineering Research Unit, Faculty of Technology, University of Oulu, Oulu, Finland.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-6247-5963
Fortum Recycling and Waste Solutions, Oulu, Finland.
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2018 (English)In: Waste Management, ISSN 0956-053X, E-ISSN 1879-2456, Vol. 80, p. 319-326Article in journal (Refereed) Published
Abstract [en]

When aiming for higher resource efficiency, greater utilization of waste streams is needed. In this work, waste paper separated from mixed municipal solid waste (MSW) was studied as a potential starting material for the production of cellulose nanofibres (CNFs). The waste paper was treated using three different techniques, namely pulping, flotation and washing, after which it was subjected to an ultrafine grinding process to produce CNFs. The energy consumption of the nanofibrillation and nanofibre morphology, as well as properties of the prepared nanofibers, were analysed. Despite the varying amounts of impurities in the waste fibres, all samples could be fibrillated into nanoscale fibres. The tensile strengths of the CNF networks ranged from 70 to 100 MPa, while the stiffness was ∼7 GPa; thus, their mechanical strength can be adequate for applications in which high purity is not required. The contact angles of the CNF networks varied depending on the used treatment method: the flotation-treated networks were more hydrophilic (contact angle 52.5°) and the washed networks were more hydrophobic (contact angle 72.6°).

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 80, p. 319-326
National Category
Bio Materials
Research subject
Wood and Bionanocomposites
Identifiers
URN: urn:nbn:se:ltu:diva-71000DOI: 10.1016/j.wasman.2018.09.033ISI: 000452946200033PubMedID: 30455013Scopus ID: 2-s2.0-85053814793OAI: oai:DiVA.org:ltu-71000DiVA, id: diva2:1251245
Note

Validerad;2018;Nivå 2;2018-09-26 (svasva)

Available from: 2018-09-26 Created: 2018-09-26 Last updated: 2019-02-25Bibliographically approved

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Berglund, LinnOksman, Kristiina

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