Enhancing Carbon Dioxide Storage via Bio-Inspired Mineralization of Vaterite Microspheres Using Ultrasonication and Bio-additives

Abstract

A carbon dioxide mineralization process is disclosed, which includes introducing ammonium hydroxide solution and a calcium chloride solution into a reaction vessel to form a mixed solution, introducing carbon dioxide gas into the reaction vessel, and forming a calcium carbonate precipitate. Implementations of the carbon dioxide mineralization process can include where the mixed solution further may include tannic acid. A concentration of tannic acid can be from about 0 mg/mL to about 2 mg/mL. A flow rate of the introduction of carbon dioxide gas can be from about 0 L/min to about 1.0 L/min. The carbon dioxide mineralization process may include providing ultrasonic energy at a frequency of from about 20 khz to about 130 khz to the mixed solution. The carbon dioxide mineralization process may include filtering the calcium carbonate precipitate through a polyvinylidene fluoride membrane. The calcium carbonate precipitate may include a metastable vaterite phase.

Dependencies are inferred from the claim text.