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Related Concept Videos

The Carbon Cycle01:14

The Carbon Cycle

Carbon is the basis of all organic matter on Earth, and is recycled through the ecosystem in two primary processes: one in which carbon is exchanged among living organisms, and one in which carbon is cycled over long periods of time through fossilized organic remains, weathering of rocks, and volcanic activity. Human activities, including increased agricultural practices and the burning of fossil fuels, has greatly affected the balance of the natural carbon cycle.
What are Biogeochemical Cycles?00:54

What are Biogeochemical Cycles?

The most common elements in organic molecules, carbon, hydrogen, oxygen, nitrogen, sulfur, and phosphorus, are only available in the ecosystem in limited amounts. Therefore, these nutrients must be recycled through both biotic and abiotic components of the ecosystem, in processes generally called biogeochemical cycles.
Carbon-dioxide Fixation01:28

Carbon-dioxide Fixation

Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...
Bioremediation00:46

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
Gas Exchange and Transport01:20

Gas Exchange and Transport

Gas exchange, the intake of molecular oxygen (O2) from the environment and the outflow of carbon dioxide (CO2) into the environment, is necessary for cellular function. Gas exchange during respiration occurs largely via the movement of gas molecules along pressure gradients. Gas travels from areas of higher partial pressure to areas of lower partial pressure. In mammals, gas exchange occurs in the alveoli of the lungs, which are adjacent to capillaries and share a membrane with them.
Carbon Dioxide Transport in the Blood01:19

Carbon Dioxide Transport in the Blood

Carbon dioxide (CO2) transport in the blood is critical to human physiology. On average, our body cells produce around 200 mL of CO2 per minute, precisely the quantity expelled by the lungs. This process involves the transportation of CO2 from the tissue cells to the lungs in three primary forms.
Forms of CO2 Transport
1. Dissolved in plasma: A small percentage (7-10%) of CO2 is transported and dissolved directly in the plasma.
2. Carbaminohemoglobin: Just over 20% of CO2 is chemically bound to...

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Related Experiment Video

Updated: May 13, 2026

A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica Composites for Carbon Capture
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A Synthetic Methodology for Preparing Impregnated and Grafted Amine-Based Silica Composites for Carbon Capture

Published on: September 29, 2023

CO(2) capture and geologic storage: the possibilities.

Hugo A Loáiciga1

  • 1Department of Geography, University of California, Santa Barbara, CA 93106; (805) 450 3332; hugo@geog.ucsb.edu.

Ground Water
|March 1, 2013
PubMed
Summary
This summary is machine-generated.

Carbon dioxide (CO2) capture and geologic storage faces significant hydrogeological, technical, and economic hurdles. These challenges suggest limited success in reducing atmospheric CO2, highlighting the need for a shift away from fossil fuels.

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Area of Science:

  • Environmental Science
  • Geology
  • Climate Change Studies

Background:

  • Atmospheric carbon dioxide (CO2) concentration stabilization is critical for mitigating climate change.
  • Geologic storage of CO2 is proposed as a technological solution to reduce atmospheric CO2 levels.
  • The long-term viability of CO2 capture and storage (CCS) requires careful assessment.

Purpose of the Study:

  • To analyze the feasibility of carbon dioxide capture and geologic storage as an effective climate change mitigation strategy.
  • To identify and evaluate the major obstacles hindering the widespread implementation of CO2 geologic storage.
  • To assess the potential impact of CO2 capture and storage on stabilizing atmospheric CO2 concentrations in the near future.

Main Methods:

  • Review and analysis of existing literature on CO2 capture and geologic storage.
  • Evaluation of hydrogeological, technical, and economic factors influencing storage viability.
  • Assessment of the scale of anthropogenic CO2 emissions in relation to storage capacity and injection rates.

Main Results:

  • Significant hydrogeological, technical, and economic challenges impede the effectiveness of CO2 capture and geologic storage.
  • Current limitations suggest that CO2 capture and storage is unlikely to substantially reduce atmospheric CO2 buildup in the coming decades.
  • The scale of global CO2 emissions necessitates a fundamental economic transition.

Conclusions:

  • Carbon dioxide capture and geologic storage faces formidable obstacles that limit its near-term potential for atmospheric CO2 stabilization.
  • A transition of the global economy away from fossil fuel dependency is likely essential for stabilizing atmospheric CO2 concentrations.
  • Further research and technological advancements are needed, but a paradigm shift in energy production is paramount.