scholarly journals Microfluidic mass transfer of CO2 at elevated pressures: implications for carbon storage in deep saline aquifers

Lab on a Chip ◽  
2021 ◽  
Vol 21 (20) ◽  
pp. 3942-3951
Author(s):  
Tsai-Hsing Martin Ho ◽  
Junyi Yang ◽  
Peichun Amy Tsai
Keyword(s):  
Mass Transfer ◽  
High Pressure ◽  
Carbon Storage ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Saline Aquifers ◽  
Elevated Pressures ◽  
Reservoir Conditions ◽  
Deep Saline Aquifers ◽  
And Storage

Carbon capture and storage in deep saline aquifers is a promising technology to mitigate anthropologically emitted CO2. Our high-pressure microfluidics can help assess the relevant time-scale and CO2 mass transfer in different reservoir conditions.

Assessing Individual Influence on Group Decisions in Geological Carbon Capture and Storage Problems

2015 ◽  
pp. 55-75 ◽  
Author(s):  
Debbie Polson ◽  
Andrew Curtis
Keyword(s):  
Carbon Storage ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Relative Influence ◽  
Saline Aquifers ◽  
Individual Experience ◽  
Expert Evaluation ◽  
Geological Data ◽  
Dominant Member ◽  
And Storage

The inherent uncertainty in information about the Earth's subsurface requires experts to interpret and reach judgements about geological data based on their individual experience and expertise. This is particularly true for the geological storage of CO2 in subsurface saline aquifers where the fate of the injected CO2 needs to be predicted far into the future. In this chapter, linear modelling is used in a structured elicitation exercise to estimate the relative influence of individual experts within a group and to assess whether a group consensus reflects a genuine shared opinion or is biased towards or away from any dominant member or subgroup. The method is applied to a real expert evaluation of the carbon storage potential of a siliciclastic formation. This reveals herding behaviour amongst the experts, and levels of inter-expert influence that are undue given individual experts' levels of expertise, though neither phenomena was apparent during the meeting.

scholarly journals Uncertainty in regional estimates of capacity for carbon capture and storage

Solid Earth ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 1707-1715 ◽  
Author(s):  
Mark Wilkinson ◽  
Debbie Polson
Keyword(s):  
Carbon Capture ◽  
Storage Capacity ◽  
Significant Proportion ◽  
Carbon Capture And Storage ◽  
Saline Aquifers ◽  
Storage Site ◽  
Limited Data ◽  
Wide Range ◽  
Regional Estimates ◽  
And Storage

Abstract. Carbon capture and storage (CCS) is a potentially important technology for the mitigation of industrial CO2 emissions. However, the majority of the subsurface storage capacity is in saline aquifers, for which there is relatively little information. Published estimates of the potential storage capacity of such formations, based on limited data, often give no indication of the uncertainty, despite there being substantial uncertainty associated with the data used to calculate such estimates. Here, we test the hypothesis that the uncertainty in such estimates is a significant proportion of the estimated storage capacity, and should hence be evaluated as a part of any assessment. Using only publicly available data, a group of 13 experts independently estimated the storage capacity of seven regional saline aquifers. The experts produced a wide range of estimates for each aquifer due to a combination of using different published values for some variables and differences in their judgements of the aquifer properties such as area and thickness. The range of storage estimates produced by the experts shows that there is significant uncertainty in such estimates; in particular, the experts' range does not capture the highest possible capacity estimates. This means that by not accounting for uncertainty, such regional estimates may underestimate the true storage capacity. The result is applicable to single values of storage capacity of regional potential but not to detailed studies of a single storage site.

scholarly journals The application, required investments and operational costs of geological CO2 sequestration: a case study

2019 ◽  
Vol 8 (6) ◽  
pp. e12861023 ◽  
Author(s):  
Pedro Junior Zucatelli ◽  
Ana Paula Meneguelo ◽  
Gisele de Lorena Diniz Chaves ◽  
Gisele de Lorena Diniz Chaves ◽  
Marielce de Cassia Ribeiro Tosta
Keyword(s):  
Carbon Capture ◽  
Large Scale ◽  
Co2 Storage ◽  
Carbon Capture And Storage ◽  
Saline Aquifers ◽  
Natural Systems ◽  
Geological Co2 Sequestration ◽  
And Storage ◽  
Geological Formations

The integrity of natural systems is already at risk because of climate change caused by the intense emissions of greenhouse gases in the atmosphere. The goal of geological carbon sequestration is to capture, transport and store CO2 in appropriate geological formations. In this review, we address the geological environments conducive to the application of CCS projects (Carbon Capture and Storage), the phases that make up these projects, and their associated investment and operating costs. Furthermore it is presented the calculations of the estimated financial profitability of different types of projects in Brazil. Using mathematical models, it can be concluded that the Roncador field presents higher gross revenue when the amount of extra oil that can be retrieved is 9.3% (US$ 48.55 billions approximately in 2018). Additional calculations show that the Paraná saline aquifer has the highest gross revenue (US$ 6.90 trillions in 2018) when compared to the Solimões (US$ 3.76 trillions approximately in 2018) and Santos saline aquifers (US$ 2.21 trillions approximately in 2018) if a CCS project were to be employed. Therefore, the proposed Carbon Capture and Storage method in this study is an important scientific contribution for reliable large-scale CO2 storage in Brazil.

A regional assessment of land-based carbon mitigation options: Bioenergy, reforestation, forest management

2020 ◽  
Author(s):  
Mona Reiss ◽  
Andy Krause ◽  
Anja Rammig
Keyword(s):  
Carbon Storage ◽  
Carbon Capture ◽  
Carbon Capture And Storage ◽  
Climate Impacts ◽  
Substitution Effects ◽  
Carbon Mitigation ◽  
Mitigation Potential ◽  
Alternative Management ◽  
Forestry Sector ◽  
And Storage

<p>Current scenarios assume that in addition to a rapid reduction in greenhouse gas emissions, land-based carbon mitigation will also be necessary to achieve the targets of the Paris Climate Agreement. Possible measures are increased carbon sequestration via planting new forests, the cultivation of bioenergy crops, possibly in combination with carbon capture and storage (BECCS), or increasing the carbon storage of existing forests. However, currently available scenarios that are in line with IPCC storylines (SSPs, Shared Socioeconomic Pathways and RCPs, Representative Concentration Pathways) usually have  a global  perspective, while in practice mitigation projects have to be realized regionally or locally. Here, we investigate the carbon mitigation potential via alternative management of Bavarian ecosystems using an ecosystem model with an explicit representation of climate impacts and land management. Bioenergy cultivation on existing agricultural land has a larger mitigation potential than reforestation only if combined with carbon capture and storage (BECCS).  The mitigation potential in the forestry sector via alternative management is limited (converting coniferous into mixed forests, nitrogen fertilization) or even negative (suspending wood harvest) due to decreased carbon storage in product pools and associated substitution effects. Overall, the potential for land-based mitigation in Bavaria is limited because the majority of current agricultural lands will still be needed for food production and the forestry sector offers only small per-area carbon mitigation potentials.</p>

scholarly journals Uncertainty in regional estimates of capacity for carbon capture and storage

2019 ◽  
Author(s):  
Mark Wilkinson ◽  
Debbie Polson
Keyword(s):  
Carbon Capture ◽  
Storage Capacity ◽  
Carbon Capture And Storage ◽  
Saline Aquifers ◽  
Storage Site ◽  
Limited Data ◽  
Wide Range ◽  
Regional Estimates ◽  
And Storage ◽  
Substantial Uncertainty

Abstract. Carbon capture and storage (CCS) is a potentially important technology for the mitigation of industrial CO2 emissions, however the majority of the subsurface storage capacity is in geological strata for which there is relatively little information, the so-called saline aquifers. Published estimates of the potential storage capacity of such formations, based on limited data, often give no indication of the uncertainty, despite there being substantial uncertainty associated with the data used to calculate such estimates. Using only publicly available data, a group of experts independently estimated the storage capacity of 7 regional saline aquifers. The experts produced a wide range of estimates for each aquifer due a combination of using different published values for some variables and differences in their judgements of the aquifer properties such as area and thickness. The range of storage estimates produced by the experts shows that there is significant uncertainty in such estimates, in particular the experts' range does not capture the highest possible capacity estimates, meaning that by not accounting for uncertainty, such regional estimates may underestimate the true storage capacity. The result is applicable to single values of storage capacity of regional potential, but not to detailed studies of a single storage site.

scholarly journals Biomass-Derived Carbon Molecular Sieves Applied to an Enhanced Carbon Capture and Storage Process (e-CCS) for Flue Gas Streams in Shallow Reservoirs

Nanomaterials ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 980 ◽  
Author(s):  
Elizabeth Rodriguez Acevedo ◽  
Camilo A. Franco ◽  
Francisco Carrasco-Marín ◽  
Agustín F. Pérez-Cadenas ◽  
Farid B. Cortés
Keyword(s):  
Molecular Sieves ◽  
Carbon Capture ◽  
Selective Adsorption ◽  
Combustion Process ◽  
Carbon Capture And Storage ◽  
Carbon Sphere ◽  
Gas Streams ◽  
Reservoir Conditions ◽  
And Storage ◽  
Shallow Reservoirs

It is possible to take advantage of shallow reservoirs (<300 m) for CO2 capture and storage in the post-combustion process. This process is called enhanced carbon capture and storage (e-CCS). In this process, it is necessary to use a nano-modifying agent to improve the chemical-physical properties of geological media, which allows the performance of CO2 selective adsorption to be enhanced. Therefore, this study presents the development and evaluation of carbon sphere molecular nano-sieves (CSMNS) from cane molasses for e-CSS. This is the first report in the scientific literature on CSMNS, due to their size and structure. In this study, sandstone was used as geological media, and was functionalized using a nanofluid, which was composed of CNMNS dispersed in deionized water. Finally, CO2 or N2 streams were used for evaluating the adsorption process at different conditions of pressure and temperature. As the main result, the nanomaterial allowed a natural selectivity towards CO2, and the sandstone enhanced the adsorption capacity by an incremental factor of 730 at reservoir conditions (50 °C and 2.5 MPa) using a nanoparticle mass fraction of 20%. These nanofluids applied to a new concept of carbon capture and storage for shallow reservoirs present a novel landscape for the control of industrial CO2 emissions.

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