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Related Concept Videos

Scale-Up Processes01:14

Scale-Up Processes

The scale-up of microbial fermentation processes is essential in industrial biotechnology, allowing the transition from laboratory-scale experiments to commercial-scale production while aiming to maintain product yield and quality. This process requires meticulous adjustment of equipment design, process parameters, and contamination control strategies to accommodate increasing culture volumes.At the laboratory scale, cultures are typically maintained in 1 to 10-liter glass or autoclavable...
Bioreactor Controls-II01:18

Bioreactor Controls-II

In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the fermentor via a sparger...
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Biofuels

The microbial conversion of organic matter into biofuels holds potential as a renewable energy source. Among biofuel sources, microalgae are recognized as a highly efficient and adaptable feedstock for biodiesel production, owing to their rapid biomass accumulation, elevated lipid productivity, and capacity to proliferate in diverse aquatic systems, including freshwater, marine, and wastewater habitats. Unlike terrestrial crops, microalgae do not compete for land and can achieve significantly...
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.

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Direct air capture technologies: innovations, integration, and pathways to scale.

Chuhan Fu1,2, Wenkang Deng1,2, Yalou Guo3

  • 1Key Laboratory of Rare Earths, Ganjiang Innovation Academy, Chinese Academy of Sciences, Ganzhou, Jiangxi 341116, China. gphu@gia.cas.cn.

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|July 6, 2026
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Summary

Direct air capture (DAC) technologies are crucial for negative carbon emissions and Net Zero goals. This review assesses DAC advancements, focusing on energy efficiency, cost reduction, and scalability for widespread deployment.

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Area of Science:

  • Environmental Science
  • Chemical Engineering
  • Climate Technology

Background:

  • Direct air capture (DAC) is vital for achieving negative carbon emissions and Net Zero targets.
  • Significant energy demands and economic hurdles impede large-scale DAC deployment.
  • Recent advancements focus on improving capture efficiency and reducing environmental impact.

Purpose of the Study:

  • To critically assess recent advancements in DAC technologies, from chemistry to process engineering.
  • To evaluate capture mechanisms, energy minimization, efficiency enhancement, and environmental mitigation strategies.
  • To compare commercialized and developing DAC technologies, including cost and deployment challenges.

Main Methods:

  • Systematic review of recent DAC literature and technological developments.
  • Analysis of capture mechanisms, energy consumption, and efficiency metrics.
  • Comparative assessment of commercial and developmental DAC technologies.

Main Results:

  • DAC technologies show progress in tailored chemistry and process engineering for CO2 removal.
  • Synergistic integration with renewable energy and waste heat is key to reducing energy intensity.
  • Commercial and developmental DAC approaches present varied technical progress and cost trajectories.

Conclusions:

  • DAC deployment requires overcoming substantial energy and economic challenges.
  • Optimizing DAC systems through renewable energy integration and process improvements is essential.
  • Further research and policy support are needed to accelerate sustainable carbon removal strategies.