Journal
BIORESOURCE TECHNOLOGY
Volume 130, Issue -, Pages 345-350Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2012.12.012
Keywords
Biochar; Biomass; Geodae-Uksae 1; Miscanthus; Slow pyrolysis
Funding
- Cooperative Research Program for Agriculture Science & Technology Development, Rural Development Administration, Republic of Korea [PJ0079662011]
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This study investigated producing biochar from Geodae-Uksae 1 for soil applications to sequestrate carbon from the atmosphere and improve the productivity of crops. Using a lab-scale packed bed reactor, pyrolysis products of Geodae-Uksae 1 were produced over a temperature range of 300-700 degrees C with a heating rate of 10 degrees C/min. Pyrolysis at 500 degrees C was found appropriate for biochar production considering the properties of char and the amount of heat required. It yielded biochar of 27.2 wt.% that contained approximately 48% carbon in the raw biomass. The surface area of the biochar rapidly increased to 181 m(2)/g. Large cylindrical pores with diameters of 5-40 mu m developed within the biochar due to the vascular cell structure of the parent biomass. The byproducts (bio-oil and gases) were also analyzed for use as fuel. (C) 2012 Elsevier Ltd. All rights reserved.
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