Characterizing the spatial distribution of CO2 leakage from the shallow CO2 release experiment in South Korea
- Authors
- Kim, Hyun-Jun; Han, Seung Hyun; Kim, Seongjun; Yun, Seong-Taek; Jun, Seong-Chun; Oh, Yun-Yeong; Son, Yowhan
- Issue Date
- 5월-2018
- Publisher
- ELSEVIER SCI LTD
- Keywords
- CO2 leakage; Environmental impact assessment; K-COSEM; Monitoring technique; Indicator
- Citation
- INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, v.72, pp.152 - 162
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
- Volume
- 72
- Start Page
- 152
- End Page
- 162
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/75621
- DOI
- 10.1016/j.ijggc.2018.03.015
- ISSN
- 1750-5836
- Abstract
- This study was conducted to detect and characterize potential CO2 leakage from the K-COSEM shallow CO2 release experiment. The study site was established in Eumseong, South Korea, and consisted of five zones divided into two lines (east and west). Approximately 1.8 t CO2 was injected from the perforated release well at Zones 1-4 from June 1-30, 2016. CO2 fluxes varied due to the uneven permeability of soil, and CO2 leakage at the surface was detected within small area (< 10 m across). In-soil CO2 concentrations within 5 m from the well were also significantly higher than those measured at 10 m from the well. These results confirmed that the spatial distribution of in-soil CO2 is strongly affected by soil properties and atmospheric pressure effects. Nonlinear regression and CO2:O-2 ratio analyses were conducted to determine whether there is a CO2 leakage. Even though maximum CO2 concentrations at some leak points were as low as the background concentration, CO2 concentration clearly increased. The CO2:O-2 ratios from the CO2 release experiments were completely different from the ratios associated with the biological reaction. Those methods seem to be practical use as indicators of CO2 leakage detection.
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Collections - College of Life Sciences and Biotechnology > Division of Environmental Science and Ecological Engineering > 1. Journal Articles
- College of Science > Department of Earth and Environmental Sciences > 1. Journal Articles
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