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High surface area activated carbon prepared from wood-based spent mushroom substrate for supercapacitors and water treatment
Umeå University, Faculty of Science and Technology, Department of Physics.ORCID iD: 0000-0002-3881-6764
Umeå University, Faculty of Science and Technology, Department of Physics.ORCID iD: 0000-0002-3320-8487
Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences, Umeå, Sweden.
Department of Biosystems and Technology, Swedish University of Agricultural Sciences, Alnarp, Sweden.
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2024 (English)In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, ISSN 0927-7757, E-ISSN 1873-4359, Vol. 680, article id 132684Article in journal (Refereed) Published
Abstract [en]

Edible white-rot fungi are commonly cultivated on wood-based substrates and selectively degrade lignin to a larger extent during their growth. Spent mushroom substrate (SMS) is produced in huge amounts by the mushroom industry and today there is a lack of proven methods to valorize this kind of biomass waste, which in most cases is landfilled or used as fuel. This study demonstrates that birch wood-based SMS from the cultivation of oyster mushrooms can be converted into high-quality activated carbon (AC) with an extremely high surface area of about 3000 m2/g. These activated carbons showed good performance when used in electrodes for supercapacitors, with energy storage parameters nearly identical to AC produced from high-quality virgin birch wood. Moreover, AC produced from SMS showed high potential as an adsorbent for cleaning reactive orange-16 azo dye from aqueous solutions as well as contaminants from synthetic effluents and from real sewage water. The kinetics of adsorption were well represented by the Avrami fractional order model and isotherms of adsorption by the Liu model. The theoretical maximum reactive orange-16 adsorption capacities were approximately 519 mg/g (SMS-based carbon) and 553 mg/g (virgin birch-based carbon). The removal of contaminants from synthetic effluents made of different dyes and inorganic compounds was around 95% and 83% depending on the effluent composition. The removal of contaminants from raw sewage water was around 84%, and from treated sewage water was around 68%. Overall, the results showed that activated carbon prepared from waste generated during cultivation of white-rot fungi is as good as activated carbon prepared from high-quality virgin wood.

Place, publisher, year, edition, pages
Elsevier, 2024. Vol. 680, article id 132684
Keywords [en]
Activated carbon, Adsorbents, Spent mushroom substrate, Supercapacitors, Water treatment
National Category
Environmental Sciences
Identifiers
URN: urn:nbn:se:umu:diva-216654DOI: 10.1016/j.colsurfa.2023.132684Scopus ID: 2-s2.0-85175849086OAI: oai:DiVA.org:umu-216654DiVA, id: diva2:1815397
Funder
Swedish Research Council Formas, 2021-00877Swedish Energy Agency, 50620-1Available from: 2023-11-28 Created: 2023-11-28 Last updated: 2023-12-04Bibliographically approved

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Boulanger, NicolasTalyzin, Aleksandr V.

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