A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
From Norway Spruce Bark to Carbon Foams : Characterization, and Applications (2020)

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

JYU-tekijät tai -toimittajat

Varila, Toni

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Varila, Toni; Brännström, Hanna; Kilpeläinen, Petri; Hellström, Jarkko; Romar, Henrik; Nurmi, Juha; Lassi, Ulla

Lehti tai sarja: BioResources

eISSN: 1930-2126

Julkaisuvuosi: 2020

Volyymi: 15

Lehden numero: 2

Artikkelin sivunumerot: 3651-3666

Kustantaja: Dept. of Wood and Paper Science, College of Natural Resources, North Carolina State University

Julkaisumaa: Yhdysvallat (USA)

Julkaisun kieli: englanti

DOI: https://doi.org/10.15376/biores.15.2.3651-3666

Julkaisun avoin saatavuus: Avoimesti saatavilla

Julkaisukanavan avoin saatavuus: Kokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX): https://jyx.jyu.fi/handle/123456789/71397

Tiivistelmä

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.

YSO-asiasanat: biomassa (teollisuus); puunkuori; metsäkuusi; uutto; tanniinit; vaahdot; biomateriaalit; huokoisuus; adsorptio