Detection and quantification of underground CO2 leakage into the soil using a fiber-optic sensor
- Authors
- Joe, Hang-Eun; Zhou, Fengfeng; Yun, Seong-Taek; Jun, Martin B. G.
- Issue Date
- 12월-2020
- Publisher
- ELSEVIER SCIENCE INC
- Keywords
- Carbon dioxide capture and storage; CO2 concentration measurement; Optical fiber sensor; Fiber-optic spectroscopy; Hollow core fiber; Photonic crystal fiber
- Citation
- OPTICAL FIBER TECHNOLOGY, v.60
- Indexed
- SCIE
SCOPUS
- Journal Title
- OPTICAL FIBER TECHNOLOGY
- Volume
- 60
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/51301
- DOI
- 10.1016/j.yofte.2020.102375
- ISSN
- 1068-5200
- Abstract
- This study presents a field demonstration of underground CO2 leakage detection using a fiber-optic interferometric sensor at an artificial leakage experiment site. CO2 gas was injected for a couple of days into the unsaturated soil zone and CO2 leakage monitoring was continuously performed for nine days using the fiber-optic sensor buried in the soil, using a hollow core photonic crystal fiber (HC-PCF) based sensor. Temperature and relative humidity in the soil were simultaneously measured by the commercial sensors. The measurement results of the HC-PCF sensor were evaluated by comparing with those by the commercial non-dispersive infrared sensor. This comparison illustrated that the proposed HC-PCF sensor was able to in-situ monitor CO2 gas concentration with a range of 0-100%. Accordingly, the proposed fiber-optic sensor has the potentials to provide a reliable assessment of CO2 gas leakage in geologic carbon storage sites and other gas leaking sites.
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- Appears in
Collections - College of Science > Department of Earth and Environmental Sciences > 1. Journal Articles
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