Accurate prediction of properties of carbon dioxide for carbon capture and sequestration operations

2016 ◽  
Vol 34 (1) ◽  
pp. 97-103 ◽  
Author(s):  
M. A. Ahmadi ◽  
T. Kashiwao ◽  
J. Rozyn ◽  
A. Bahadori
Keyword(s):  
Carbon Dioxide ◽  
Carbon Capture ◽  
Accurate Prediction ◽  
Carbon Capture And Sequestration ◽  
Prediction Of Properties

scholarly journals A Review of Pathways to Carbon Neutrality from Renewable Energy and Carbon Capture

2021 ◽  
Vol 245 ◽  
pp. 01018
Author(s):  
Qianji Zhao
Keyword(s):  
Carbon Dioxide ◽  
Renewable Energy ◽  
Carbon Capture ◽  
Negative Impact ◽  
Dynamic Balance ◽  
Carbon Capture And Storage ◽  
Carbon Capture And Sequestration ◽  
Carbon Neutrality ◽  
Advantages And Disadvantages ◽  
The Status

The greenhouse gas represented by carbon dioxide is having a negative impact on the earth's ecology. The goal of carbon neutrality is to reduce carbon emissions to zero through complete elimination or dynamic balance. Therefore, achieving the goal of carbon neutrality is conducive to restoring the earth's ecology and reducing global temperature. The main ways to achieve carbon neutrality include the use of renewable energy to replace fossil energy and carbon capture and sequestration. There is no carbon dioxide involved in the process of renewable energy production, and carbon capture and storage can directly eliminate carbon dioxide. This article reviews the ways to achieve carbon neutrality: the status quo, advantages and disadvantages of renewable energy and carbon capture and sequestration, and analyzes the current development and problems and challenges of carbon neutrality through examples.

Qualification Testing of a Liquid CO2 Turbopump for Carbon Capture and Sequestration Applications

2011 ◽  
Author(s):  
J. Jeffrey Moore ◽  
Hector Delgado ◽  
Timothy Allison
Keyword(s):  
Carbon Dioxide ◽  
Power Plant ◽  
Carbon Capture ◽  
Power Plants ◽  
Pressure Rise ◽  
Department Of Energy ◽  
Minimal Amount ◽  
Carbon Capture And Sequestration ◽  
Liquid Co2 ◽  
Qualification Testing

In order to reduce the amount of carbon dioxide (CO2) greenhouse gases released into the atmosphere, significant progress has been made in developing technology to sequester CO2 from power plants and other major producers of greenhouse gas emissions. The compression of the captured carbon dioxide stream requires a sizeable amount of power, which impacts plant availability, capital expenditures and operational cost. Preliminary analysis has estimated that the CO2 compression process reduces the plant efficiency by 8% to 12% for a typical power plant. The goal of the present research is to reduce this penalty through development of novel compression and pumping processes. The research supports the U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) objectives of reducing the energy requirements for carbon capture and sequestration in electrical power production. The primary objective of this study is to boost the pressure of CO2 to pipeline pressures with the minimal amount of energy required. Previous thermodynamic analysis identified optimum processes for pressure rise in both liquid and gaseous states. At elevated pressures, CO2 assumes a liquid state at moderate temperatures. This liquefaction can be achieved through commercially available refrigeration schemes. However, liquid CO2 turbopumps of the size and pressure needed for a typical power plant were not available. This paper describes the design, construction, and qualification testing of a 150 bar cryogenic turbopump. Unique characteristics of liquid CO2 will be discussed.

scholarly journals New chemistry for enhanced carbon capture: beyond ammonium carbamates

2021 ◽  
Author(s):  
Alexander C. Forse ◽  
Phillip J. Milner
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Emissions ◽  
Carbon Capture ◽  
Carbon Capture And Sequestration ◽  
Anthropogenic Carbon ◽  
Anthropogenic Carbon Dioxide

New pathways for carbon capture and sequestration are needed to tackle the challenge of rising anthropogenic carbon dioxide emissions.

CO2 Reduction to Propanol by Copper Foams: A Pre- and Post-Catalysis Study

2020 ◽  
Author(s):  
Jennifer A. Rudd ◽  
Ewa Kazimierska ◽  
Louise B. Hamdy ◽  
Odin Bain ◽  
Sunyhik Ahn ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Photoelectron Spectroscopy ◽  
Carbon Capture ◽  
Surface Composition ◽  
Co2 Reduction ◽  
Structural Rearrangement ◽  
Copper Electrode ◽  
Ex Situ ◽  
X Ray ◽  
Copper Electrodes

The utilization of carbon dioxide is a major incentive for the growing field of carbon capture. Carbon dioxide could be an abundant building block to generate higher value products. Herein, we describe the use of porous copper electrodes to catalyze the reduction of carbon dioxide into higher value products such as ethylene, ethanol and, notably, propanol. For <i>n</i>-propanol production, faradaic efficiencies reach 4.93% at -0.83 V <i>vs</i> RHE, with a geometric partial current density of -1.85 mA/cm<sup>2</sup>. We have documented the performance of the catalyst in both pristine and urea-modified foams pre- and post-electrolysis. Before electrolysis, the copper electrode consisted of a mixture of cuboctahedra and dendrites. After 35-minute electrolysis, the cuboctahedra and dendrites have undergone structural rearrangement. Changes in the interaction of urea with the catalyst surface have also been observed. These transformations were characterized <i>ex-situ</i> using scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. We found that alterations in the morphology, crystallinity, and surface composition of the catalyst led to the deactivation of the copper foams.

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