Technical Pathway:
Carbon Dioxide Removal
Carbon dioxide removal (CDR) techniques, or negative emission technologies (NETs), are a suite of natural and technological pathways to remove and sequester carbon dioxide (CO₂) from the air. Unlike carbon capture and storage, these techniques remove CO₂ directly from the atmosphere or enhance natural carbon sinks. Browse all 588 resources.
Browse All Subtopics Technical Pathway:
Carbon Capture, Utilization and Storage
Carbon Capture, Utilization and Storage (CCUS) technologies involve the capture of carbon dioxide (CO₂) from fuel combustion or industrial processes, the transport of this CO₂ via ship or pipeline, and either its use as a resource to create valuable products or services or its permanent storage underground. Browse all 463 resources.
Browse All Subtopics Carbon Dioxide Removal
Afforestation / Reforestation
Afforestation is the conversion of abandoned and degraded agricultural lands into forests, while reforestation is the replantation of trees in deforested land. Both practices can contribute to negative emissions since the growth of additional plant sequesters atmospheric carbon dioxide and naturally sink it in their biomass and in the soil.
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BECCS
Bioenergy with carbon capture and storage (BECCS) is a technique where biomass is grown and converted into electricity, heat, or fuel, and the carbon emissions from this conversion are captured and stored in geological formations or embedded in long-lasting products. The capture and storage process is similar to the approach ... Read More ▸
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Biochar
Biochar is a substance created when organic material like agricultural waste is burned in the absence of oxygen. That process, called pyrolysis, creates a carbon-rich product that is stable or biologically recalcitrant. By transforming biomass into biochar, the carbon in the plant material is locked up instead of being released ... Read More ▸
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Direct Air Capture
Direct air capture is the technique of scrubbing carbon dioxide directly from the sky through large mechanical facilities. The technique can be used to obtain carbon for making a byproduct or fuel. Direct air capture and storage (DACS) means storing that carbon dioxide in a long-term reservoir. The two main ... Read More ▸
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Enhanced Weathering
Enhanced weathering is a carbon dioxide removal technique that involves spreading pulverized silicate rocks across large tracts of land to accelerate the natural process of storing carbon as carbonate compounds on land or bicarbonate at sea.
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Ocean and Coastal CDR
Ocean based carbon dioxide removal methods include ocean alkalinization or enhancement, ocean up-welling, and enhanced kelp farming. Coastal blue carbon is the carbon captured by living coastal and marine organisms and stored in coastal ecosystems, such as salt marshes, mangroves, and seagrass beds.
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Ocean Iron Fertilization
Ocean Iron Fertilization is the process of adding iron filings to seawater to stimulate the growth of phytoplankton that absorb atmospheric carbon dioxide. Ocean fertilization seeks to take advantage of the ocean's natural carbon pump, which uses carbon dioxide at the sea surface and incorporates the carbon, via photosynthesis, into ... Read More ▸
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Carbon Capture, Utilization and Storage
CCUS State Legislative Tracker
Many policy decisions impacting CCUS development are made on a state-by-state level. View our interactive state legislative tracker to identify and compare state CCUS frameworks.
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Carbon Capture and Storage
Carbon capture and storage (CCS) is the technological process of capturing carbon dioxide from a power plant or industrial activity and the storage of that captured carbon dioxide in an underground basalt formation, saline aquifer, depleted oil and gas reservoir, or sub-sea geologic formation.
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