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The densification of bio-char: Effect of pyrolysis temperature on the qualities of pellets

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2016Publisher:Elsevier BVJournal:Bioresource Technology, volume 200, pages 521-527 (issn: 0960-8524,

Authors: Hanping Chen; Jingai Shao; Danchen Zhu; Dingding Yao; Haiping Yang; Xianhua Wang; Qiang Hu;

doi: 10.1016/j.biortech.2015.10.077

pmid: 26524250

The densification of bio-char: Effect of pyrolysis temperature on the qualities of pellets

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Abstract

The densification of bio-chars pyrolyzed at different temperatures were investigated to elucidate the effect of temperature on the properties of bio-char pellets and determine the bonding mechanism of pellets. Optimized process conditions were obtained with 128MPa compressive pressure and 35% water addition content. Results showed that both the volume density and compressive strength of bio-char pellets initially decreased and subsequently increased, while the energy consumption increased first and then decreased, with the increase of pyrolysis temperature. The moisture adsorption of bio-char pellets was noticeably lower than raw woody shavings but had elevated than the corresponding char particles. Hydrophilic functional groups, particle size and binder were the main factors that contributed to the cementation of bio-char particles at different temperatures. The result indicated that pyrolysis of woody shavings at 550-650°C and followed by densification was suitable to form bio-char pellets for application as renewable biofuels.

Related Organizations

Huazhong University of Science and Technology
China (People's Republic of)

Keywords

Hot Temperature, Compressive Strength, Water, Lignin, Wood, Carbon, Biofuels, Charcoal, Pressure, Adsorption, Biomass, Particle Size, Hydrophobic and Hydrophilic Interactions, Biotechnology

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