What’s the difference between geologic and biologic carbon sequestration?
Geologic carbon sequestration is the process of storing carbon dioxide (CO2) in underground geologic formations. The CO2 is usually pressurized until it becomes a liquid, and then it is injected into porous rock formations in geologic basins. This method of carbon storage is also sometimes a part of enhanced oil recovery, otherwise known as tertiary recovery, because it is typically used later in the life of a producing oil well. In enhanced oil recovery, the liquid CO2 is injected into the oil-bearing formation in order to reduce the viscosity of the oil and allow it to flow more easily to the oil well.
Biologic carbon sequestration refers to storage of atmospheric carbon in vegetation, soils, woody products, and aquatic environments. For example, by encouraging the growth of plants, particularly larger plants like trees, advocates of biologic sequestration hope to help remove CO2 from the atmosphere.
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Making Minerals-How Growing Rocks Can Help Reduce Carbon Emissions
Following an assessment of geologic carbon storage potential in sedimentary rocks, the USGS has published a comprehensive review of potential carbon storage in igneous and metamorphic rocks through a process known as carbon mineralization.
Groundwater Sampling Method Key to Monitoring Success of Carbon Sequestration
TECHNICAL ANNOUNCEMENT: Monitoring, verification and accounting are key parts to demonstrating the feasibility or success of integrated carbon capture and storage technologies.
Methane from Some Wetlands May Lower Benefits of Carbon Sequestration
Methane emissions from restored wetlands may offset the benefits of carbon sequestration a new study from the U.S. Geological Survey suggests.
USGS Receives International Endorsement for Geologic Carbon Sequestration Methodology
The USGS methodology for assessing carbon dioxide (CO2) storage potential for geologic carbon sequestration was endorsed as a best practice for a country-wide storage potential assessment by the International Energy Agency (IEA).
Carbon Sequestration: Implications for Wyoming
U.S. Geological Survey (USGS) research hydrologist Dr. Yousif Kharaka will present a talk in Cheyenne, Wyo. about the feasibility and implications of capturing and storing the greenhouse gas carbon dioxide underground in depleted oil fields and deep rock formations with salty aquifers.
How Does Carbon Get Into the Atmosphere?
A short video on how carbon can get into the atmosphere.
A valley with smog pollution from Carbon Sequestration.
Uncovering the Ecosystem Service Value of Carbon Sequestration in National Parks. Photo by Robert Crootof, NPS.
Conceptual model of the carbon cycle and movement in wetlands
Conceptual model of the carbon cycle and movement in wetlands (modified from Lloyd et al. 2013). This proposal addresses interconnected processes that are highlighted in red boxes including C sources for food web support for juvenile Chinook salmon, organic carbon accumulation in peat, atmospheric carbon flux (CO2 and CH4), and constraining
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PubTalk 1/2011 — Capture and Geologic Sequestration of Carbon Dioxide
Is Sequestration Necessary? Can We Do It at an Acceptable Total Cost?
By Yousif Kharaka, USGS National Research Program
- Combustion of fossil fuels currently releases approximately 30 billion tons of carbon dioxide (CO2) to the atmosphere annually
- Increased anthropogenic emissions have dramatically raised
Can We Move Carbon from the Atmosphere and into Rocks?
A new method to assess the Nation's potential for storing carbon dioxide in rocks below the earth's surface could help lessen climate change impacts. The injection and storage of liquid carbon dioxide into subsurface rocks is known as geologic carbon sequestration.
USGS scientist Robert Burruss discusses this new methodology and how it can help mitigate climate
Carbon budget for the Great Dismal Swamp
Wetlands play an important role in the global carbon cycle
Wetlands play an important role in the global carbon cycle