Preparation of nanoparticles with a continuous gas–liquid membrane contactor: Absorption process

Nanosized calcium carbonate was prepared as a model product in a continuous gas–liquid membrane contactor for the first time. The effects of Ca(OH)2 concentration, CO2 partial pressure and liquid flow velocity on the absorption rate were estimated according to the gas–liquid reaction theory. The results showed that, with the increase in Ca(OH)2 concentration, CO2 partial pressure and liquid flow velocity, the absorption rate increased. The theoretical predictions were in agreement with the experimental data.