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Related Concept Videos

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...
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Most plants use the C3 pathway for carbon fixation. However, some plants, such as sugar cane, corn, and cacti that grow in hot conditions, use alternative pathways to fix carbon and conserve energy loss due to photorespiration. Photorespiration is the process that occurs when the oxygen concentration is high. Under such conditions, the rubisco enzyme in the Calvin cycle binds O2 instead of CO2, which halts photosynthesis and consumes energy.
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The Carbon Cycle01:14

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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.
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Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
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Related Experiment Video

Updated: Jul 11, 2026

Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner
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Cost structure of a postcombustion CO2 capture system using CaO.

J Carlos Abanades1, G Grasa, M Alonso

  • 1Instituto Nacional del Carbón, (CSIC), C/Francisco Pintado Fe, No. 26, 33011 Oviedo, Spain. abanades@incar.csic.es

Environmental Science & Technology
|September 8, 2007
PubMed
Summary

This study introduces a novel CO2 capture system for power plants, potentially reducing costs to $15 per ton of CO2 avoided. The system integrates a calciner and carbonator, generating power while capturing carbon dioxide emissions.

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Area of Science:

  • Chemical Engineering
  • Environmental Science
  • Energy Economics

Background:

  • Power plants are significant sources of carbon dioxide (CO2) emissions.
  • Current CO2 capture technologies face economic challenges.
  • Developing cost-effective CO2 capture is crucial for climate change mitigation.

Purpose of the Study:

  • To present the fundamental economics of a new CO2 capture system for power plant flue gases.
  • To evaluate the potential for significant cost reduction in carbon capture.
  • To analyze the economic viability of an integrated power plant and capture system.

Main Methods:

  • Economic analysis based on established cost data for power plant components.
  • Modeling of a system comprising a combustion power plant, an oxy-fired fluidized bed calciner, and a fluidized bed carbonator.
  • Calculation of avoided CO2 costs based on system configuration and energy generation.

Main Results:

  • The proposed CO2 capture system demonstrates potential for breakthrough cost reductions, targeting approximately $15 per ton of CO2 avoided.
  • The system's economic advantage stems from generating additional power through an integrated calciner.
  • Avoided CO2 is attributed to both the calciner's coal input and captured CO2 from the primary plant's flue gas.

Conclusions:

  • The integrated CO2 capture system offers a promising and potentially cost-effective solution for reducing power plant emissions.
  • Further economic feasibility studies are warranted for this innovative approach to carbon capture.
  • The system's design facilitates simultaneous power generation and significant CO2 emission reduction.