A1 Journal article (refereed)
Activated carbon from hydrolysis lignin : Effect of activation method on carbon properties (2022)
Bergna, D., Varila, T., Romar, H., & Lassi, U. (2022). Activated carbon from hydrolysis lignin : Effect of activation method on carbon properties. Biomass and Bioenergy, 159, Article 106387. https://doi.org/10.1016/j.biombioe.2022.106387
JYU authors or editors
Publication details
All authors or editors: Bergna, Davide; Varila, Toni; Romar, Henrik; Lassi, Ulla
Journal or series: Biomass and Bioenergy
ISSN: 0961-9534
eISSN: 1873-2909
Publication year: 2022
Publication date: 24/02/2022
Volume: 159
Article number: 106387
Publisher: Elsevier BV
Publication country: Netherlands
Publication language: English
DOI: https://doi.org/10.1016/j.biombioe.2022.106387
Publication open access: Openly available
Publication channel open access: Partially open access channel
Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/80504
Abstract
This study presents the effects of different activation methods to produce activated carbon from the hydrolysis lignin. Pretreatment of the feedstock with common mineral acids (HCL, HNO3, and H3PO4), different steam rates for physical activation, and different chemical activating agents (ZnCl2, Na2CO3, and KOH) for chemical activation were investigated. The pretreated biomass was carbonized and activated in one-stage process and the surface characteristics, such as total pore volume, pore size distribution and specific surface area, were investigated. The results showed that the activated carbon surface properties were not greatly affected by acid pretreatment. Brunauer-Emmett-Teller (BET) surface areas as high as 616 m2/g could be achieved with physical activation and 2054 m2/g with chemical activation. Different steam rates in the selected interval (0.5–2 cm3/min) did not change the pore size distribution but had small positive effect on the specific surface area, while chemical activation with ZnCl2 increased the mesoporosity, and activation with KOH increased the microporosity and oxygen groups in the form of ether and alcohol bonds.
Keywords: activated carbon; biomass (industry); lignin; hydrolysis; preliminary treatment; porosity
Free keywords: acid pretreatment; hydrolysis lignin; activated carbon; physical activation; surface area
Contributing organizations
Ministry reporting: Yes
Reporting Year: 2022
JUFO rating: 2