• International Journal of High-Rise Buildings
• /
• v.12 no.2
• /
• pp.121-128
• /
• 2023

Cities cover only 3% of the planet's surface, yet they are responsible for more than 75% of the global emissions. Given the projected urban built area will double by 2060, the carbon emitted from cities will further increase. SOM proposes the Urban Sequoia concept, for buildings that go beyond 'net zero' and absorb carbon from the atmosphere. This concept combines multiple strategies, including the use of an optimised building form with a highly efficient structural system, modularized prefabrication techniques, holistic integration of facade, MEP and interiors' components, bio-based materials, and Direct Air Capture (DAC) technology, to reduce a 40-storey building's whole life cycle carbon emissions by more than 300% over a 100-year lifespan. Calculations of embodied carbon emissions are performed with SOM's in-house Environmental Analysis (EA) Tool to demonstrate the effectiveness of employing Urban Sequoia's design strategies in the design of new buildings using current technologies.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.13 no.1
• /
• pp.431-438
• /
• 2012

The $CO_2$ capture technology using an aqueous amine solution is studied widely now. The entire process consists of an absorber to remove carbon dioxide selectively and a regenerator to regenerate absorbent and acquire pure carbon dioxide. Because there are the complicated design variables that affect performance of the process, it needs optimization and analysis through modeling to make a commercially reliable process. In this study, the decomposition method was proposed to consider convergence problem and sensitivity analysis was executed for the carbon dioxide capture process variables. Non-equilibrium model was used in the simulation to get more realistic results and we designed optimized process with more than 95% purity and 90% recovery.

• Geophysics and Geophysical Exploration
• /
• v.26 no.4
• /
• pp.157-170
• /
• 2023

In South Korea, carbon capture and storage (CCS) techniques have attracted considerable attention as part of efforts to achieve the 2030 Korean Nationally Determined Contribution. However, owing to delays in large-scale CCS projects in South Korea, interest in cross-border CCS projects, wherein CO₂ captured in South Korea is stored in overseas CCS facilities, has increased. In this study, we investigated the development status of the CarbonNet project in the Gippsland Basin, Australia. First, we provide a brief overview of sedimentary basins and CCS projects in Australia. Subsequently, we review the geological history of the Gippsland Basin, the site of the large-scale CCS project. Finally, we summarize the site selection process for the CarbonNet project and discuss the suitability of the Pelican site for large-scale CCS projects.

• Magazine of RCR
• /
• v.16 no.4
• /
• pp.50-56
• /
• 2021

• Magazine of the Korean Society of Agricultural Engineers
• /
• v.65 no.2
• /
• pp.18-27
• /
• 2023

• Korean Chemical Engineering Research
• /
• v.57 no.4
• /
• pp.539-546
• /
• 2019

Global warming has mentioned as one of the international problems and these researches have conducted. Carbon Capture, Utilization and Storage (CCUS) technology has improved due to increasing importance of reducing emission of carbon dioxide. Among of various CCUS technologies, mineral carbonation can converted $CO_2$ into high-cost materials with low energy. Existing researches has been used ions extracted solid wastes for mineral carbonation but the procedure is complicated. However, the procedure using seawater is simple because it contained high concentration of metal cation. This research is a basic study using seawater-based wastewater for mineral carbonation. 3 M Monoethanolamine (MEA) was used as $CO_2$ absorbent. Making various concentrations of seawater solution, simulated seawater powder was used. Precipitated metal carbonate salts were produced by mixing seawater solutions and $rich-CO_2$ absorbent solution. They were analyzed by X-ray Diffraction (XRD), Scanning Electron Microscope (SEM), and Thermogravimetric Analysis (TGA) and studied characteristic of producing precipitated metal carbonate and possibility of reusing absorbent.

• Journal of the Korean Institute of Gas
• /
• v.18 no.3
• /
• pp.13-19
• /
• 2014

Dynamic ductile fracture (DDF) has been studied in the transportation pipeline for the carbon dioxide capture and storage(CCS) system. DDF behavior of CCS transportation pipeline has been analyzed using Battelle Two Curve Method (BTCM) and compared with the DDF behavior of natural gas pipeline. The operating safety criteria against the DDF has been investigated based on the sensitivity analyses of the pipe thickness and the operating temperature for the $CO_2$ pipeline. The DDF criteria can be applied to confirm the operating safety of the $CO_2$ pipeline. If the commercial natural gas pipeline were used at room temperature as a $CO_2$ pipeline, the thickness of pipe should be at least 7mm and the pressure should be less than 54bar for the $CO_2$ pipeline system.

• Journal of the Korean Society of Systems Engineering
• /
• v.9 no.2
• /
• pp.23-36
• /
• 2013

Plant industry is one of technology-intensive and most prosperous industries in Korea because of its recent prosperity and promising outlook in export. However, no Korean EPC company has yet been well prepared in lifting their capacity sufficient enough to get the upstream conceptual or basic design and engineering orders for sizable plant projects which are known as the more value-added. If systems engineering, a methodology which developed complex systems such as airplanes and has been justified its effectiveness in Defense and NASA projects, can be integrated with plant engineering which should be developed and applied based on the requirements of so many stakeholders, conditions, lifecycle concepts, and constraints of the projects, huge synergic effect is expected particularly in developing a specific upstream design, which is a conceptual or basic design. The notion of integration with each other between systems engineering and plant engineering can be really the crux of EPC's success in any plant projects. This paper suggests an approach showing a methodology how to dig out, analyze, evaluate, verify and implement the stakeholders' requirements into a plant design in conceptual phase using the theory and skills of systems engineering. ISO/IEC 15288 well known systems engineering standards is used. Carbon capture system is used for a case study, for it is an emerging technology in reducing emissions of carbon dioxide causing global warming from flue gas after combustion. Here systems engineering was proven to play a substantial role in enhancing the capability of designers in developing a conceptual design of whole plant or certain part of crucial plant systems.

• Particle and aerosol research
• /
• v.9 no.4
• /
• pp.201-208
• /
• 2013

Copper (II) and Nickel (II) mimic complexes of enzyme carbonic anhydrase were evaluated under ambient condition for carbon dioxide capture and conversion process. The synthesized complexes were characterized by ATR-FTIR and UV-DR spectroscopy. It was found that all the complexes have biomimetic activity towards $CO_2$ using para-nitrophenyl acetate (p-NPA) hydrolysis as the model reaction. Interestingly, the proper geometry obtained by the restricted orientation of tripodal N atoms in Cu (II) complex of 2,6-bis(2-benzimidazolyl) pyridine showed the highest activity (1.14 au) compared to others. The $CO_2$ bio-mineralization to $CaCO_3$ was carried out via in-vitro crystallization approach. Results indicate that the biomimetic complexes have a role in determining $CaCO_3$ morphology. The present observations establish a qualitative insight for the design of improved small-molecule catalysts for carbon capture.

• Clean Technology
• /
• v.18 no.2
• /
• pp.221-225
• /
• 2012

In this study, simulation works for a carbon dioxide capture process using solvent absorption method have been performed for decrease of regeneration energy in applying phase transition of liquid solvent. When carbon dioxide is dissolved in 30 wt% MEA solvent, liquid mixture divided into two phase according to mole loading of dissolved carbon dioxide. Using this phenomenon, we can decrease regeneration energy about 61% than primary absorber column-stripper column process.