---
title: 'Moisture-swing' technique enables energy-efficient carbon capture from air
description: New research from Northwestern University demonstrates a novel approach to capturing carbon dioxide from ambient air using a "moisture-swing" technique. The method leverages the relationship between h
---

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# 'Moisture-swing' technique enables energy-efficient carbon capture from air

New research from Northwestern University demonstrates a novel approach to capturing carbon dioxide from ambient air using a "moisture-swing" technique. The method leverages the relationship between humidity and CO2 absorption, capturing CO2 at low humidities and releasing it at high humidities. By testing a variety of ions, the researchers identified those with the highest valency as the most effective, primarily phosphates, which enable efficient moisture-swing carbon capture. The advancement provides an energy-efficient carbon removal method that can extract CO2 directly from the atmosphere, helping to offset emissions and combat climate change. ([SciTechDaily](https://scitechdaily.com/scientists-unveil-new-carbon-capture-method-that-plucks-co2-straight-from-the-air/?utm_campaign=Rio%20Tinto&utm_source=hs_email&utm_medium=email&_hsenc=p2ANqtz-9VJY0mfO9RZMBrZXDLgGJBNlxY5Gx52yEGVGOovWqJll_-wviuoos9qoSmRuvIUdeLpewY))

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