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Received November 2, 2022
Revised November 24, 2022
Accepted December 1, 2022
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EU RED-II 방법론을 적용한 국내 미이용 바이오매스 케나프 펠릿의 전과정 온실가스 배출량 산정

Life Cycle Greenhouse Gas Emission Assessment on Locally Generated Kenaf Residue Biomass Fuel in South Korea

1한경국립대학교 식품생명화학공학부 화학공학전공 & 탄소중립자원센터 17579 경기도 안성시 중앙로 2㈜엔벨롭스 04768 서울시 성동구
1School of Food Biotechnology & Chemical Engineering and Carbon-Neutral Resources Research Center, Hankyong National University, Anseong, 17579, Korea 2Envelops Co., Ltd., Seoul, 04768, Korea
Korean Chemical Engineering Research, May 2023, 61(2), 258-264(7), 10.9713/kcer.2023.61.2.258 Epub 31 May 2023
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지속가능한 바이오에너지 이용을 위해서는 국내 바이오매스 이용 확대와 지속가능성 증대가 필수적인데, 국내 관련 체계는 아직 미비한 상황이다. 이에 바이오 연료에 대한 지속가능성 평가를 위한 앞선 체계가 마련되어 있는 EU의 RED-II 방법론을 활용하여 국내 농업 잔재물 바이오매스인 케나프(Hibiscus cannabinus L.) 줄기 펠릿을 이용한 바이 오매스 발전의 전과정 온실가스 배출량을 이론적으로 산정하였다. 케나프 잔재물 펠릿의 생산경로에 대해 EU 공동연 구센터(Joint Research Center)의 배출계수를 이용하여 잔재물 수집, 운송, 펠릿 연료화까지의 전과정 온실가스 배출량을 산정한 결과, 배출량은 3.0 gCO2eq/MJ로 나타났고 이를 25% 발전효율로 연소하여 전력을 생산하는 경우 전과정 온실 가스 배출량은 11.9 gCO2eq/MJ로 산출되었다. 이는 전력배출계수로 환산하면 42.8 kgCO2eq/MWh로, 국내 전력배출계 수 443.4 kgCO2eq/MWh와 비교하면 90.3%의 온실가스 배출량 감축을 달성할 수 있는 것으로 분석되었다. 또한 수입 목재펠릿과 비교하는 경우 최소 59.6%의 온실가스 배출 감축이 가능하여, 국내 발생 잔재물 바이오매스를 바이오에너 지 생산에 이용하는 경우 기존 수입 목재펠릿에 비하여 높은 수준의 온실가스 배출 감축 달성이 가능함을 확인하였다. 이는 국내 바이오에너지의 전과정온실가스 배출량평가 체계 마련을위한 기초자료로 활용될 수있을 것으로기대된다.

The greenhouse gas (GHG) emission assessment of kenaf pellet, produced from locally generated kenaf residues in South Korea, has been studied based on the EU RED-II methodology for calculating GHG impact of biomass fuels. Based on the production pathway of kenaf residue pellet and emission coefficients from EU JRC report, the life cycle GHG emission of kenaf residue pellet is assessed as 3.0 gCO2eq/MJpellet and the life cycle GHG emission of electricity generated from kenaf residue pellet is assessed as 11.9 gCO2eq/MJ when electrical efficiency of final conversion is 25%. The potential GHG emission reduction of electricity produced from kenaf pellet is 90.3% compared to the domestic electricity emission factor 42.8 kgCO2eq/MWh. Also, the electricity produced from kenaf pellet can reduce at least 59.6% of GHG emission compared to the electricity produced from imported wood pellets. 


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