New & Renewable Energy (신재생에너지)

Korean Society for New and Renewable Energy (한국신·재생에너지학회)
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Effect of Chestnut-shell Tea Waste and Castor Oil as an Additive on Fuel Characteristics of Pellets Fabricated with Pitch Pine and Mongolian Oak

첨가제로서 율피차 부산물과 피마자유가 리기다소나무 및 신갈나무 펠릿의 연료적 특성에 미치는 영향

  • Kim, HyeonJeong (Graduate School of International Agricultural Technology, Seoul National University) ;
  • Yang, In (Institute of Green-Bio Science and Technology, Seoul National University) ;
  • Han, Gyu-Seong (Department of Wood and Paper Science, College of Agriculture, Life & Environments Sciences, Chungbuk National University)
  • Received : 2022.01.17
  • Accepted : 2022.05.25
  • Published : 2022.06.25
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Abstract

This study aimed to determine the optimal conditions for fabricating pitch pine (PCP) and Mongolian oak (MOK) pellets using chestnut-shell tea waste (CSW) and castor oil (CSO) as additives. For pellets fabricated using a pilot-scale flat-die pellet mill, all moisture content (MC) was in line with A1 wood pellet standards for residential and small-scale commercial uses designated by the National Institute of Forest Science at the Republic of Korea (NIFOS), regardless of fabricating conditions; the durability of PCP pellets prepared using PCP particles with 10% MC, and CSW addition also satisfied these criteria. The moisture tolerance of PCP pellets improved with combination of 2 wt% CSW and 2-6 wt% CSO. Overall, use of 20 mesh CSW as an additive, PCP with 10% MC, and MOK with 12% MC was found to be optimal. Moreover, using CSO as an additive, high-quality PCP and MOK pellets can be fabricated by adjusting the particles to 12% MC. However, the durability of PCP and MOK pellets prepared using these conditions did not meet the wood pellet standards for residential and small-scale commercial use. Therefore, further research is needed to improve the durability of these pellets.

Keywords

Acknowledgement

본 연구는 2016년 한국연구재단 "산학협력 선도대학 육성사업"의 지원과 2017년도 "충북대학교 연구년제"의 지원을 받아 수행한 연구입니다. 한편 연구 진행에 도움을 준 (주) 신영이앤피와 산림조합 중부목재유통센터의 관계자분들에게 감사드립니다.

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