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What primary mechanism do most commercial direct air capt... | QuestionStock

Representative image for question: What primary mechanism do most commercial direct air capture (DAC) systems use to remove CO2 from ambient air?

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What primary mechanism do most commercial direct air capture (DAC) systems use to remove CO2 from ambient air?

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What primary mechanism do most commercial direct air capture (DAC) systems use to remove CO2 from ambient air?

Options:

Membrane filtration
Chemical sorbents that bind CO2
Cryogenic condensation
Photosynthetic bioreactors

Correct answer: Chemical sorbents that bind CO2

Explanation: Most industrial DAC systems use chemical sorbents (solid amines or alkaline solutions) that chemically bind CO2; Climeworks commissioned a commercial-scale plant using solid sorbents in Switzerland in 2017.

Created 2026-03-10T17:32:30.473Z. Updated 2026-03-10T17:32:30.473Z.