The use of TiO₂ nanoparticles to enhance CO₂ absorption

Author:

Yu Zhang  Bo Zhao  Jiazong Jiang  Yuqun Zhuo  Shujuan Wang  

Journal:

International Journal of Greenhouse Gas Control

Issue Date:

2016

Abstract(summary):

Highlights • The enhancement of absorption of CO 2 by propylene carbonate in the presence of TiO 2 nanoparticles was investigated. • The experimental results show that the gas absorption rate can be enhanced significantly in the presence of TiO 2 nanoparticles. • The CO 2 absorption enhancement factor firstly increases and then decreases with the increases of solids loadings, which proves the existence of optimal solids loading. • The particle size is also a main factor, which affects CO 2 absorption enhancement factor. • A three-dimensional instantaneous numerous-particle di-mechanism model based on the shuttle mechanism as well as a micro-convection mechanism was developed. • The results calculated by the model are close to the experimental results, which showed the model can predict experimental data very well. Abstract The enhancement of absorption of CO 2 by propylene carbonate in the presence of TiO 2 nanoparticles was investigated. The influences of solids loading and particle size of TiO 2 nanoparticles on the absorption rate were studied experimentally. The results show that the gas absorption rate can be enhanced significantly in the presence of TiO 2 nanoparticles. The CO 2 absorption enhancement factor firstly increases and then decreases with the increases of solids loadings, which proves the existence of optimal solids loading. The particle size is also a main factor, which affects CO 2 absorption enhancement factor. As the particle size increases, the optimal solids loading gradually increases. A three-dimensional instantaneous numerous-particle di-mechanism model based on the shuttle mechanism as well as a micro-convection mechanism was developed. The results calculated by the model are close to the experimental results, which showed the model can predict experimental data very well.

Page:

49-49