Nanocrystalline and Amorphous Calcium Carbonate from Waste Seashells by Ball Milling Mechanochemistry Processes.

ABSTRACT: Nanocrystalline calcium carbonate (CaCO₃) and amorphous CaCO₃ (ACC) are materials of increasing technological interest. Nowadays, they are mainly synthetically produced by wet reactions using CaCO₃ reagents in the presence of stabilizers. However, it has recently been discovered that ACC can be produced by ball milling calcite. Calcite and/or aragonite are the mineral phases of mollusk shells, which are formed from ACC precursors. Here, we investigated the possibility to convert, on a potentially industrial scale, the biogenic CaCO₃ (bCC) from waste mollusk seashells into nanocrystalline CaCO₃ and ACC. Waste seashells from the aquaculture species, namely oysters (Crassostrea gigas, low-Mg calcite), scallops (Pecten jacobaeus<

SUBMITTER: Marchini C 

PROVIDER: S-EPMC10797593 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature