Integration of CO₂ capture and storage based on pH-swing mineral carbonation using recyclable ammonium salts

详细信息    查看全文

• 作者：Xiaolong Wang ; ^a ; ^{enxxw5@nottingham.ac.uk} ; Mercedes Maroto-Valer^a
• 关键词：Integrated capture and storage ; Mineral carbonation ; Recycable ; Ammonium salts ; Serpentine
• 刊名：Energy Procedia
• 出版年：2011
• 出版时间：2011
• 年：2011
• 卷：4
• 期：Complete
• 页码：4930-4936
• 全文大小：488 K

文摘

The integration of CO₂ capture and storage process based on mineral carbonation using recyclable ammonium salts is a new approach to capture carbon dioxide and convert it into mineral carbonates. This process avoids stripping CO₂ as pure gas from absorbents and compression of CO₂, and therefore reduces energy consumption. The additives used in this process are recyclable ammonium salts, the NH₄HSO₄ and NH₄HCO₃. The results from extraction experiments show that NH₄HSO₄ was able to extract 100 % of magnesium from serpentine at 100 °C after 3 hours. And the precipitation of C hydromagnesite using NH₄HCO₃ solution is much more effective than using CO₂, where the highest magnesium carbonation achieved 96 % . Based on the experimental results, this process shows that the process has the potential to be cost-effective.