Effective Capture of Carbon Dioxide Using Hydrated Sodium Carbonate Powders
Yuanhao Cai,
Weilin Wang,
Liang Li,
Zhaofeng Wang,
Suying Wang,
Hao Ding,
Zhengguo Zhang,
Luyi Sun,
Weixing Wang
Affiliations
Yuanhao Cai
School of Chemistry and Chemical Engineering, China Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, South China University of Technology, Guangzhou 510640, Guangdong, China
Weilin Wang
School of Chemistry and Chemical Engineering, China Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, South China University of Technology, Guangzhou 510640, Guangdong, China
Liang Li
School of Chemistry and Chemical Engineering, China Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, South China University of Technology, Guangzhou 510640, Guangdong, China
Zhaofeng Wang
Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
Suying Wang
School of Chemistry and Chemical Engineering, China Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, South China University of Technology, Guangzhou 510640, Guangdong, China
Hao Ding
Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
Zhengguo Zhang
School of Chemistry and Chemical Engineering, China Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, South China University of Technology, Guangzhou 510640, Guangdong, China
Luyi Sun
Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, USA
Weixing Wang
School of Chemistry and Chemical Engineering, China Key Laboratory of Enhanced Heat Transfer and Energy Conservation of the Ministry of Education, South China University of Technology, Guangzhou 510640, Guangdong, China
The emission of CO2 has been considered a major cause of greenhouse effects and global warming. The current CO2 capture approaches have their own advantages and weaknesses. We found that free-flowing hydrated sodium carbonate (Na2CO3) powders with 30 wt % water can achieve a very high CO2 sorption capacity of 282 mg/g within 60 min and fast CO2 uptake (90% saturation uptake within 16 min). The results suggest that the alkaline solution resulting from the dissolution of partial Na2CO3 can freely attach onto the hydrated Na2CO3 particles, which provides an excellent gas–liquid interface for CO2 capture, leading to significantly enhanced CO2 sorption capacity and kinetics.
