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Atmospheric Gas-Aerosol Equilibrium: IV. Thermodynamics of Carbonates

Meng, Zhaoyue and Seinfeld, John H. and Saxena, Pradeep and Kim, Yong Pyo (1995) Atmospheric Gas-Aerosol Equilibrium: IV. Thermodynamics of Carbonates. Aerosol Science and Technology, 23 (2). pp. 131-154. ISSN 0278-6826. doi:10.1080/02786829508965300.

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Data and correlations for incorporating carbonate and bicarbonate salts into a gas/aerosol equilibrium model are developed. The species considered include CO₂(g), CO₂(aq), HCO₃⁻, CO₂²⁻, NH₂CO₂⁻, Na₂CO₃(s), NaHCO₃(s), K₂CO₃ (s), KHCO₃(s), CaCO₃(s), MgCO₃(s), NH₄HCO₃(s), and NH₂COONH₄(s). Three activity coefficient estimation methods (Bromley, K-M, and Pitzer) are examined. Necessary parameters for these three methods are obtained. It is found that, in general, the Pitzer method performs better than the other two, and is selected as the multicomponent activity coefficient estimation method of choice. Water activity correlations for binary carbonate solutions are obtained by polynomial fitting of available data. Deliquescence points for the important atmospheric carbonate salts and their temperature dependence are given.

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Seinfeld, John H.0000-0003-1344-4068
Additional Information:This work was supported by the Electric Power Research Institute under agreement RP3189-03.
Funding AgencyGrant Number
Electric Power Research Institute (EPRI)RP3189-03
Issue or Number:2
Record Number:CaltechAUTHORS:20230226-710568100.3
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:119510
Deposited By: Tony Diaz
Deposited On:28 Feb 2023 17:16
Last Modified:28 Feb 2023 17:16

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