LAPSE:2021.0780
Published Article
LAPSE:2021.0780
State-of-the-Art Char Production with a Focus on Bark Feedstocks: Processes, Design, and Applications
Ali Umut Şen, Helena Pereira
October 14, 2021
In recent years, there has been a surge of interest in char production from lignocellulosic biomass due to the fact of char’s interesting technological properties. Global char production in 2019 reached 53.6 million tons. Barks are among the most important and understudied lignocellulosic feedstocks that have a large potential for exploitation, given bark global production which is estimated to be as high as 400 million cubic meters per year. Chars can be produced from barks; however, in order to obtain the desired char yields and for simulation of the pyrolysis process, it is important to understand the differences between barks and woods and other lignocellulosic materials in addition to selecting a proper thermochemical method for bark-based char production. In this state-of-the-art review, after analyzing the main char production methods, barks were characterized for their chemical composition and compared with other important lignocellulosic materials. Following these steps, previous bark-based char production studies were analyzed, and different barks and process types were evaluated for the first time to guide future char production process designs based on bark feedstock. The dry and wet pyrolysis and gasification results of barks revealed that application of different particle sizes, heating rates, and solid residence times resulted in highly variable char yields between the temperature range of 220 °C and 600 °C. Bark-based char production should be primarily performed via a slow pyrolysis route, considering the superior surface properties of slow pyrolysis chars.
Keywords
bark, charcoal, gasification, hydrothermal carbonization, pyrolysis, torrefaction
Suggested Citation
Şen AU, Pereira H. State-of-the-Art Char Production with a Focus on Bark Feedstocks: Processes, Design, and Applications. (2021). LAPSE:2021.0780
Author Affiliations
Şen AU: CEF, Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal [ORCID]
Pereira H: CEF, Forest Research Centre, School of Agriculture, University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal
Journal Name
Processes
Volume
9
Issue
1
First Page
pr9010087
Year
2021
Publication Date
2021-01-02
Published Version
ISSN
2227-9717
Version Comments
Original Submission
Other Meta
PII: pr9010087, Publication Type: Review
Record Map
Published Article

LAPSE:2021.0780
This Record
External Link

doi:10.3390/pr9010087
Publisher Version
Download
Files
[Download 1v1.pdf] (2.2 MB)
Oct 14, 2021
Main Article
License
CC BY 4.0
Meta
Record Statistics
Record Views
292
Version History
[v1] (Original Submission)
Oct 14, 2021
 
Verified by curator on
Oct 14, 2021
This Version Number
v1
Citations
Most Recent
This Version
URL Here
https://psecommunity.org/LAPSE:2021.0780
 
Original Submitter
Calvin Tsay
Links to Related Works
Directly Related to This Work
Publisher Version