• Proceedings of the Korean Society of Crop Science Conference
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• 2006.04a
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• pp.422-423
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• 2006

• Proceedings of the Korean Society of Dyers and Finishers Conference
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• 2009.03a
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• pp.104-105
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• 2009

• Journal of Photoscience
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• v.8 no.2
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• pp.71-71
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• 2001

• Bulletin of the Korean Chemical Society
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• v.31 no.11
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• pp.3071-3072
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• 2010

• Bulletin of the Korean Chemical Society
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• v.25 no.6
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• pp.924-926
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• 2004

• Clean Technology
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• v.27 no.4
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• pp.325-331
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• 2021

In this study, bio-carbons were produced by activation process from unused biomass (Grade 3 wood pellet and spent coffee grounds) to determine the removal performance of formaldehyde and acetaldehyde. The activation experiments were conducted in a fixed bed reactor using CO₂ as an activation agent. The temperature of the activation reactor and input of CO₂ were 900 ℃ and 1 L min^-1 for all the experiments. The maximum BET surface area of about 788 m² g^-1 was obtained for bio-carbon produced from Grade 1 wood pellet, whereas about 544 m² g^-1 was achieved with bio-carbon produced from spent coffee grounds. In all the experiments, the bio-carbons produced were mainly found to have micro-porous nature. A lower ash amount in raw material was favored for the high surface area of bio-carbons. In the removal test of formaldehyde and acetaldehyde, the bio-carbon produced from spent coffee grounds showed excellent adsorption performance compared with woody biomass (Grade 1 wood pellet and Grade 3 wood pellet). In addition, the comparative experiment of commercial impregnated activated carbon and bio-carbon produced from spent coffee grounds was conducted. In terms of formaldehyde removal performance, the commercial impregnated bio-carbon was excellent, while bio-carbon produced from spent coffee grounds was excellent in acetaldehyde removal.

• 한국약용작물학회:학술대회논문집
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• 2007.05a
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• pp.197-198
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• 2007

• Transactions of the Korean hydrogen and new energy society
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• v.24 no.3
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• pp.249-254
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• 2013

The integrated gasification combined cycle (IGCC) system is well known for its high efficiency compared with other coal fueled power generation system. The aim of this study is to confirm the feasibility of using bio gas in coal feeding system and syngas recirculation system. The effects of using bio gas in the gasifier on the syngas composition were investigated through simulations using the Aspen Plus process simulator. It was found that these changes had an influence on the syngas composition of the final stream and bio gas can be used in a gasifier system.

• Proceedings of the Korean Society of Developmental Biology Conference
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• 2005.10a
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• pp.141-142
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• 2005

• Proceedings of the Korean Society of Developmental Biology Conference
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• 2005.10a
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• pp.143-144
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• 2005