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Updated: Jun 6, 2025

Calcium Carbonate Formation in the Presence of Biopolymeric Additives
Published on: May 14, 2019
Two anti-acidification pathways for the dissolution process of aragonite in acidified artificial seawater with
Gang Li1, Yiping Su1, Yingying Cai1
1School of Environmental Science and Engineering and The Key Laboratory of Municipal Solid Waste Recycling Technology and Management of Shenzhen City, Southern University of Science and Technology, Shenzhen, 518055, P. R. China. 1990soybean@gmail.com.
Abstract:
Two anti-dissolution mechanisms of aragonite in acidified artificial seawater were investigated by monitoring the dissolution process in the presence of organic and inorganic additives. Among them, the carboxyl functional group (RCOO-) in PAA bonds with Ca2+ and bicarbonate, while strong protonation of silicates directly binds to hydrogen ions from bicarbonate. These interactions ultimately form stable polymer-rich amorphous calcium carbonate and dense silica layers on the surface of aragonite, effectively inhibiting further dissolution under dissolved CO2.
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