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Issue 20, 2011
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Temperature-controlled ‘breathing’ of carbon dioxide bubbles

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We report a microfluidic (MF) approach to studies of temperature mediated carbon dioxide (CO2) transfer between the gas and the liquid phases. Micrometre-diameter CO2 bubbles with a narrow size distribution were generated in an aqueous or organic liquid and subsequently were subjected to temperature changes in the downstream channel. In response to the cooling-heating-cooling cycle the bubbles underwent corresponding contraction-expansion-contraction transitions, which we term ‘bubble breathing’. We examined temperature-controlled dissolution of CO2 in four exemplary liquid systems: deionized water, a 0.7 M aqueous solution of NaCl, ocean water extracted from Bermuda coastal waters, and dimethyl ether of poly(ethylene glycol), a solvent used in industry for absorption of CO2. The MF approach can be extended to studies of other gases with a distinct, temperature-dependent solubility in liquids.

Graphical abstract: Temperature-controlled ‘breathing’ of carbon dioxide bubbles

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Publication details

The article was received on 04 Jun 2011, accepted on 02 Aug 2011 and first published on 25 Aug 2011

Article type: Paper
DOI: 10.1039/C1LC20490D
Citation: Lab Chip, 2011,11, 3545-3550
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    Temperature-controlled ‘breathing’ of carbon dioxide bubbles

    E. Tumarkin, Z. Nie, J. I. Park, M. Abolhasani, J. Greener, B. Sherwood-Lollar, A. Günther and E. Kumacheva, Lab Chip, 2011, 11, 3545
    DOI: 10.1039/C1LC20490D

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