Abstract
Abstract: Carbon dioxide (CO 2 ) capture and storage (CCS) plays a crucial role in reducing carbon emissions to the atmosphere. However, gas leakage from deep storage reservoirs, which may flow back into near-surface and eventually to the atmosphere, is a major concern associated with this technology. Despite an increase in research focusing on potential CO 2 leakage into deep surface features and aquifers, a significant knowledge gap remains in the geochemical changes associated with near-surface. This study reviews the geochemical processes related to the intrusion of CO 2 into near-surface environments with an emphasis on metal mobilization and discusses about the geochemical research approaches, recent findings, and current knowledge gaps. It is found that the intrusion of CO 2 (g) into near-surface likely induces changes in pH, dissolution of minerals, and potential degradation of surrounding environments. The development of adequate geochemical research approaches for assessing CO 2 leakage in near-surface environments, using field studies, laboratory experiments, and/or geochemical modeling combined with isotopic tracers, has promoted extensive surveys of CO 2 -induced reactions. However, addressing knowledge gaps in geochemical changes in near-surface environments is fundamental to advance current knowledge on how CO 2 leaks from storage sites and the consequences of this process on soil and water chemistry. For reliable detection and risk management of the potential impact of CO 2 leakage from storage sites on the environmental chemistry, currently available geochemical research approaches should be either combined or used independently (albeit in a manner complementarily to one another), and the results should be jointly interpreted. Graphical abstract: [Figure not available: see fulltext.].
| Original language | English |
|---|---|
| Journal | Environmental Geochemistry and Health |
| DOIs | |
| Publication status | Published - 2019 Jan 1 |
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Keywords
- CO capture and storage (CCS)
- CO leakage
- CO sequestration
- CO -induced geochemical processes
- Near-surface environment
ASJC Scopus subject areas
- Environmental Engineering
- Environmental Chemistry
- Water Science and Technology
- Environmental Science(all)
- Geochemistry and Petrology
Cite this
Potential CO 2 intrusion in near-surface environments : a review of current research approaches to geochemical processes. / Derakhshan-Nejad, Zahra; Sun, Jing; Yun, Seong Taek; Lee, Giehyeon.
In: Environmental Geochemistry and Health, 01.01.2019.Research output: Contribution to journal › Review article
}
TY - JOUR
T1 - Potential CO 2 intrusion in near-surface environments
T2 - a review of current research approaches to geochemical processes
AU - Derakhshan-Nejad, Zahra
AU - Sun, Jing
AU - Yun, Seong Taek
AU - Lee, Giehyeon
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Abstract: Carbon dioxide (CO 2 ) capture and storage (CCS) plays a crucial role in reducing carbon emissions to the atmosphere. However, gas leakage from deep storage reservoirs, which may flow back into near-surface and eventually to the atmosphere, is a major concern associated with this technology. Despite an increase in research focusing on potential CO 2 leakage into deep surface features and aquifers, a significant knowledge gap remains in the geochemical changes associated with near-surface. This study reviews the geochemical processes related to the intrusion of CO 2 into near-surface environments with an emphasis on metal mobilization and discusses about the geochemical research approaches, recent findings, and current knowledge gaps. It is found that the intrusion of CO 2 (g) into near-surface likely induces changes in pH, dissolution of minerals, and potential degradation of surrounding environments. The development of adequate geochemical research approaches for assessing CO 2 leakage in near-surface environments, using field studies, laboratory experiments, and/or geochemical modeling combined with isotopic tracers, has promoted extensive surveys of CO 2 -induced reactions. However, addressing knowledge gaps in geochemical changes in near-surface environments is fundamental to advance current knowledge on how CO 2 leaks from storage sites and the consequences of this process on soil and water chemistry. For reliable detection and risk management of the potential impact of CO 2 leakage from storage sites on the environmental chemistry, currently available geochemical research approaches should be either combined or used independently (albeit in a manner complementarily to one another), and the results should be jointly interpreted. Graphical abstract: [Figure not available: see fulltext.].
AB - Abstract: Carbon dioxide (CO 2 ) capture and storage (CCS) plays a crucial role in reducing carbon emissions to the atmosphere. However, gas leakage from deep storage reservoirs, which may flow back into near-surface and eventually to the atmosphere, is a major concern associated with this technology. Despite an increase in research focusing on potential CO 2 leakage into deep surface features and aquifers, a significant knowledge gap remains in the geochemical changes associated with near-surface. This study reviews the geochemical processes related to the intrusion of CO 2 into near-surface environments with an emphasis on metal mobilization and discusses about the geochemical research approaches, recent findings, and current knowledge gaps. It is found that the intrusion of CO 2 (g) into near-surface likely induces changes in pH, dissolution of minerals, and potential degradation of surrounding environments. The development of adequate geochemical research approaches for assessing CO 2 leakage in near-surface environments, using field studies, laboratory experiments, and/or geochemical modeling combined with isotopic tracers, has promoted extensive surveys of CO 2 -induced reactions. However, addressing knowledge gaps in geochemical changes in near-surface environments is fundamental to advance current knowledge on how CO 2 leaks from storage sites and the consequences of this process on soil and water chemistry. For reliable detection and risk management of the potential impact of CO 2 leakage from storage sites on the environmental chemistry, currently available geochemical research approaches should be either combined or used independently (albeit in a manner complementarily to one another), and the results should be jointly interpreted. Graphical abstract: [Figure not available: see fulltext.].
KW - CO capture and storage (CCS)
KW - CO leakage
KW - CO sequestration
KW - CO -induced geochemical processes
KW - Near-surface environment
UR - http://www.scopus.com/inward/record.url?scp=85062767390&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85062767390&partnerID=8YFLogxK
U2 - 10.1007/s10653-019-00263-0
DO - 10.1007/s10653-019-00263-0
M3 - Review article
AN - SCOPUS:85062767390
JO - Environmental Geochemistry and Health
JF - Environmental Geochemistry and Health
SN - 0269-4042
ER -