Characterizing the spatial distribution of CO2 leakage from the shallow CO2 release experiment in South Korea

Hyun Jun Kim, Seung Hyun Han, Seongjun Kim, Seong Taek Yun, Seong Chun Jun, Yun Yeong Oh, Yo Whan Son

Research output: Contribution to journalArticle

5 Citations (Scopus)

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. Non-linear regression and CO2:O2 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:O2 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.

Original languageEnglish
Pages (from-to)152-162
Number of pages11
JournalInternational Journal of Greenhouse Gas Control
Volume72
DOIs
Publication statusPublished - 2018 May 1

Fingerprint

Spatial distribution
leakage
spatial distribution
Soils
experiment
Experiments
pressure effect
Pressure effects
soil
atmospheric pressure
Atmospheric pressure
soil property
permeability
Fluxes

Keywords

  • CO leakage
  • Environmental impact assessment
  • Indicator
  • K-COSEM
  • Monitoring technique

ASJC Scopus subject areas

  • Pollution
  • Energy(all)
  • Industrial and Manufacturing Engineering
  • Management, Monitoring, Policy and Law

Cite this

Characterizing the spatial distribution of CO2 leakage from the shallow CO2 release experiment in South Korea. / Kim, Hyun Jun; Han, Seung Hyun; Kim, Seongjun; Yun, Seong Taek; Jun, Seong Chun; Oh, Yun Yeong; Son, Yo Whan.

In: International Journal of Greenhouse Gas Control, Vol. 72, 01.05.2018, p. 152-162.

Research output: Contribution to journalArticle

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