From Norway Spruce Bark to Carbon Foams : Characterization, and Applications
Abstract
Fresh bark from spruce Picea abies was milled and extracted with hot water. The extracts were purified in a number of steps in order to get tannin-extracts pure enough to prepare tannin-based carbon foams. The chemical composition of the extracts were analyzed. The foams were maturated and thermally treated to obtain desired properties, such as specific surface area, porosity, and compressive strength. It was possible to produce carbon foams even if they contained carbohydrate impurities. Differences in the properties of the carbon foams such as compressive strength, specific surface areas, and pore size distributions might be related to the compositions of the extracts. The foams were finally activated chemically and physically and were tested in adsorption of methylene blue. Results from the adsorption tests showed that adsorption was highly related to the total pore volume and the amount of mesopores created inside the foam structure during the thermal treatment.
Main Authors
Format
Articles
Research article
Published
2020
Series
Subjects
Publication in research information system
Publisher
Dept. of Wood and Paper Science, College of Natural Resources, North Carolina State University
The permanent address of the publication
https://urn.fi/URN:NBN:fi:jyu-202008175533Use this for linking
Review status
Peer reviewed
ISSN
1930-2126
DOI
https://doi.org/10.15376/biores.15.2.3651-3666
Language
English
Published in
BioResources
Citation
- Varila, T., Brännström, H., Kilpeläinen, P., Hellström, J., Romar, H., Nurmi, J., & Lassi, U. (2020). From Norway Spruce Bark to Carbon Foams : Characterization, and Applications. BioResources, 15(2), 3651-3666. https://doi.org/10.15376/biores.15.2.3651-3666
License
Funder(s)
European Commission
Funding program(s)
Interreg, others
Interreg, muut
Funded by the European Union. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Education and Culture Executive Agency (EACEA). Neither the European Union nor EACEA can be held responsible for them.
Additional information about funding
Toni Varila would like to thank the Green Bioraff Solutions Project (EU/Interreg/Botnia-Atlantica, 20201508) for funding this research. Authors from Natural Resources Institute Finland gratefully acknowledge financial support from EU/Interreg/Botnia-Atlantica within the framework of Tannins for wastewater treatment (TanWat) project (20201484).
Copyright© 2020 the Authors