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| GWP (Global Warming Potential)를 고려한 가시박 바이오차르의 토양 납 제거 효과 분석 |
| 김유진1, 박한1, 김민호1, 서성희1, 옥용식2, 유가영1 |
1경희대학교 공과대학 환경학및환경공학과
2강원대학교 바이오차연구센터 |
| A Study of Burcucumber Biochars to Remediate Soil Pb Considering GWP (Global Warming Potential) |
| You Jin Kim1, Han Park1, Min-Ho Kim1, Sung Hee Seo1, Yong Sik Ok2, Gayoung Yoo1 |
1Department of Environmental Science and Engineering, College of Engineering, Kyung Hee University
2Korea Biochar Research Center, Kangwon National Universtiy |
| Corresponding author |
Gayoung Yoo ,Tel: 031-201-3686, Fax: 031-203-4589, Email: gayoo@khu.ac.kr
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Received: June 30, 2015; Revised: July 27, 2015; Accepted: July 30, 2015. Published online: July 31, 2015. |
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| ABSTRACT |
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Biochar, a by-product from pyrolysis of biomass, is a promising option to mitigate climate change by increasing soil carbon sequestration. This material is also considered to have potential to remediate a soil with heavy metal pollution by increasing the soil’s adsorptive capacity. This study conducted the assessment of two biochars considering the climate change mitigation potential and heavy metal removal capacity at the same time. Two kinds of biochars (BC_Ch, TW_Ch) were prepared by pyrolyzing the biomass of burcucumber (BC_Bm) and tea waste (TW_Bm). The soils polluted with Pb were mixed with biochars or biomass and incubated for 60 d. During the incubation, CO2, CH4, and N2O were regularly measured and the soil before and after incubation was analyzed for chemical and biological parameters including the acetate extractable Pb. The results showed that only the BC_Ch treatment significantly reduced the amount of Pb after 60 d incubation. During the incubation, the CO2 and N2O emissions from the BC_Ch and TW_Ch were decreased by 24% and 34% compared to the BC_Bm and TW_Bm, respectively. The CH4 emissions were not significantly affected by biochar treatments. We calculated the GWP considering the production of amendment materials, application to the soils, removal of Pb, and soil carbon storage. The BC_Ch treatment had the most negative value because it had the higher Pb adsorption and soil carbon sequestration. Our results imply that if we apply biochar made from burcucumber, we could expect the pollution reduction and climate change mitigation at the same time. |
| Key Words:
Biochar, Pb, Soil Remediation, Greenhouse Gas Emission, Global Warming Potential (GWP) |
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