Environmental risks and impacts of carbon dioxide (CO2) leakage in terrestrial ecosystems

Steven, M. D.; Smith, K. L.; Colls, J. J.

doi:10.1533/9781845699581.3.324

Cited by 8 publications

(4 citation statements)

References 63 publications

(62 reference statements)

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“…Furthermore, leaf responses were not reported. Several studies on extreme CO 2 levels in the root zone have been conducted on a number of different crop species including soybean, rice, sorghum, peas, beans, sunflower, barley and cotton and have been reviewed and detailed within a CCS context (Steven et al ). Overall, negative effects on root growth and yield were reported here under high CO 2 together with species‐specific effects.…”

Section: Introductionmentioning

confidence: 99%

A novel root‐to‐shoot stomatal response to very high CO₂ levels in the soil: electrical, hydraulic and biochemical signalling

Lake

Walker

Cameron

et al. 2016

Physiologia Plantarum

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Investigations were undertaken in the context of the potential environmental impact of carbon capture and storage (CCS) transportation in the form of a hypothetical leak of extreme levels of CO2 into the soil environment and subsequent effects on plant physiology. Laboratory studies using purpose built soil chambers, separating and isolating the soil and aerial environments, were used to introduce high levels of CO2 gas exclusively into the rhizosphere. CO2 concentrations greater than 32% in the isolated soil environment revealed a previously unknown whole plant stomatal response. Time course measurements of stomatal conductance (gs), leaf temperature and leaf abscisic acid (ABA) show strong coupling between all three variables over a specific period (3 h following CO2 gassing) occurring as a result of CO2‐specific detection by roots. The coupling of gs and ABA subsequently breaks down resulting in a rapid and complete loss of turgor in the shoot. Root access to water is severely restricted as evidenced by the inability to counter turgor loss, however, the plant regains some turgor over time. Recovery of full turgor is not achieved over the longer term. Results suggest an immediate perception and whole plant response as changes in measured parameters (leaf temperature, gs and ABA) occur in the shoot, but the response is solely due to detection of very high CO2 concentration at the root/soil interface which results in loss of stomatal regulation and disruption to control over water uptake.

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Section: Introductionmentioning

confidence: 99%

A novel root‐to‐shoot stomatal response to very high CO₂ levels in the soil: electrical, hydraulic and biochemical signalling

Lake

Walker

Cameron

et al. 2016

Physiologia Plantarum

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“…The emission of carbon dioxide from coal combustion and fossil fuel processes is predicted to produce increases in the atmospheric CO 2 concentration from 398 , to 450 ppm and in the global temperature of more than 2.8 °C by 2100 . To reduce CO 2 emissions, various methods have been identified as carbon dioxide capture and storage (CCS) processes. − CCS approaches have the drawback that CO 2 leaked from storage sites could migrate to the land surface and affect soil conditions, groundwater, plant growth, and so on. , Other drawbacks of CCS processes include rapid leakage during earthquakes, their energy consumption leading to new carbon emissions, the absence of byproduct output, and poor cost effectiveness . An encouraging new technological strategy is provided by carbon capture, utilization, and storage (CCUS) approaches, which stress the utilization of CO 2 .…”

Section: Introductionmentioning

confidence: 99%

CO₂ Absorption and Sequestration as Various Polymorphs of CaCO₃ Using Sterically Hindered Amine

et al. 2013

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One aspect of the attempt to restrain global warming is the reduction of the levels of atmospheric CO2 produced by fossil fuel power systems. This study attempted to develop a method that reduces CO2 emissions by investigating the absorption of CO2 into sterically hindered amine 2-amino-2-methyl-1-propanol (AMP), the acceleration of the absorption rate by using the enzyme carbonic anhydrase (CA), and the conversion of the absorption product to stable carbonates. CO2 absorbed by AMP is converted via a zwitterion mechanism to bicarbonate species; the presence of these anions was confirmed with (1)H and (13)C NMR spectral analysis. The catalytic efficiency (kcat/Km), CO2 absorption capacities, and enthalpy changes (ΔHabs) of aqueous AMP in the presence or absence of CA were found to be 2.61 × 10(6) or 1.35 × 10(2) M(-1) s(-1), 0.97 or 0.96 mol/mol, and -69 or -67 kJ/mol, respectively. The carbonation of AMP-absorbed CO2 was performed by using various Ca(2+) sources, viz., CaCl2 (CAC), Ca(OOCCH3)2 (CAA), and Ca(OOCCH2CH3)2 (CAP), to obtain various polymorphs of CaCO3. The yields of CaCO3 from the Ca(2+) sources were found in the order CAP > CAA > CAC as a result of the effects of the corresponding anions. CAC produces pure rhombohedral calcite, and CAA and CAP produce the unusual phase transformation of calcite to spherical vaterite crystals. Thus, AMP in combination with CAA and CAP can be used as a CO2 absorbent and buffering agent for the sequestration of CO2 in porous CaCO3.

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“…Leakage of stored CO 2 , both onshore and offshore, is a potential environmental risk (Blackford et al 2013;Pearce et al 2014;Smith et al 2013;Steven, Smith, and Colls 2010). Eight of the sixteen experts interviewed suppose that large-scale CO 2 storage would negatively affect geological systems, such as underground water or faults in the rock layers, as well as marine ecosystems in the case of offshore storage.…”

Section: Potential Risk Eventsmentioning

confidence: 99%

Perspective of CO2 capture & storage (CCS) development in Vietnam: Results from expert interviews

Trinh

Ha-Duong

2015

International Journal of Greenhouse Gas Control

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This paper summarizes expert opinions regarding crucial factors that may influence Vietnam's future use of carbon capture and storage (CCS) based on face-to-face interviews in December 2013 with 16 CCS-related experts from the Vietnamese government, research institutes, universities and the energy industrial sector. This study finds that financial incentives and climate policy are the most important factors for the development of CCS technologies in Vietnam in the next two decades. Financial incentives involve direct subsidies from the government, such as tax exemptions for land use and the importation of CCS-related equipment. In addition, all the experts agree that international financial support is important to initiate a large deployment of CCS technologies in Vietnam by implementing demonstrative/pilot projects to prove CCS's working efficiency.

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Environmental risks and impacts of carbon dioxide (CO2) leakage in terrestrial ecosystems

Cited by 8 publications

References 63 publications

A novel root‐to‐shoot stomatal response to very high CO₂ levels in the soil: electrical, hydraulic and biochemical signalling

A novel root‐to‐shoot stomatal response to very high CO₂ levels in the soil: electrical, hydraulic and biochemical signalling

CO₂ Absorption and Sequestration as Various Polymorphs of CaCO₃ Using Sterically Hindered Amine

Perspective of CO2 capture & storage (CCS) development in Vietnam: Results from expert interviews

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Environmental risks and impacts of carbon dioxide (CO2) leakage in terrestrial ecosystems

Cited by 8 publications

References 63 publications

A novel root‐to‐shoot stomatal response to very high CO2 levels in the soil: electrical, hydraulic and biochemical signalling

A novel root‐to‐shoot stomatal response to very high CO2 levels in the soil: electrical, hydraulic and biochemical signalling

CO2 Absorption and Sequestration as Various Polymorphs of CaCO3 Using Sterically Hindered Amine

Perspective of CO2 capture & storage (CCS) development in Vietnam: Results from expert interviews

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A novel root‐to‐shoot stomatal response to very high CO₂ levels in the soil: electrical, hydraulic and biochemical signalling

A novel root‐to‐shoot stomatal response to very high CO₂ levels in the soil: electrical, hydraulic and biochemical signalling

CO₂ Absorption and Sequestration as Various Polymorphs of CaCO₃ Using Sterically Hindered Amine