Journal
BIORESOURCE TECHNOLOGY
Volume 246, Issue -, Pages 82-87Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2017.07.018
Keywords
Hydrochar; Carbonization; Biomass; NMR
Funding
- Karabuk University [KBU BAP-17-DR-047]
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In this work, the hydrothermal carbonization of glucose, cellulose, chitin, chitosan and wood chips at 200 degrees C at processing times between 6 and 48 h was studied. The carbonization degree of wood chips, cellulose and chitosan obviously increases as function of time. The heating value of glucose increases to 88% upon carbonization for 48 h, while it is only 5% for chitin. It is calculated to be between 44 and 73% for wood chips, chitosan and cellulose. Glucose yielded complete formation of spherical hydrochar structures at a shorter processing time, as low as 12 h. However, carbon spheres with narrow size (similar to 560 nm) distribution were obtained upon 48 h of residence time. Cellulose and wood chips yielded a similar morphology with an irregular size distribution. Chitin seemed not to undergo hydrothermal carbonization, whereas densely aggregated spheres of a uniform size around 42 nm were obtained from chitosan after 18 h. (C) 2017 Elsevier Ltd. All rights reserved.
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