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NTIS 바로가기청정기술 = Clean technology, v.19 no.3, 2013년, pp.201 - 211
Biochar is charred materials generated during pyrolysis processes in the absence of oxygen using biomass, resulting in high carbon contents. In recent years, biochar has attracted more increasingly due to its potential role in carbon sequestration, renewable energy, waste management, soil amendment ...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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바이오차는 무엇인가? | 바이오차는 바이오매스를 이용하여 산소가 없는 환경에서 열분해할 때 만들어지는 탄소함량이 높은 고체 물질이다. 바이오차의 탄소격리, 재생 에너지, 폐기물 관리, 농업 생산성 개선, 환경복원 관점에서의 중요한 기능으로 인해 최근에 크게 주목을 받고 있다. | |
바이오차가 탄소 네가티브의 특징을 가지는 이유는 무엇인가? | 바이오차의 탄소격리, 재생 에너지, 폐기물 관리, 농업 생산성 개선, 환경복원 관점에서의 중요한 기능으로 인해 최근에 크게 주목을 받고 있다. 바이오차는 토양에서 수천 년간 안정적으로 보존될 수 있기 때문에, 결국에는 분해될 수 밖에 없어 탄소중립이라 불리는 바이오매스 에너지와는 달리 탄소 네가티브의 특징을 가지고 있다. 게다가 바이오차를 토양에 적용하면 바이오차의 높은 pH와 물 및 영양분의 우수한 보유능으로 인해 농업 생산성이 크게 개선될 수 있다. | |
바이오차는 농업 생산성 증가와 탄소격리에 있어서의 중요성을 포함하여 연구와 활용의 필요가 있는 4가지 측면은 무엇인가? | 바이오차는 농업 생산성 증가와 탄소격리에 있어서의 중요성을 포함하여 4가지 측면에서 연구와 활용의 필요성을 가지고 있다[4]. 즉, (1) 기후변화 대응, (2) 에너지 생산, (3) 토양 개량, (4) 폐기물 관리 측면에서 볼 수 있다(Figure 2). 우선, 기후변화 측면에서는 대기중의 이산화탄소를 바이오차의 형태로 고정화하여 토양에 되돌려 넣음으로써 탄소 순환의 속도를 느리게 하고, 오랜 세월동안 이산화탄소 배출을 억제할 수 있다는 원리에 기초한다. |
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