Simultaneous mineralization of CO2 and recovery of soluble potassium using earth-abundant potassium feldspar
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- 作者：HePing Xie (1) (2)
YuFei Wang (1) (2)
Yang Ju (3)
Bin Liang (1) (4)
JiaHua Zhu (1) (4)
Ru Zhang (1)
LingZhi Xie (1)
Tao Liu (1) (2)
XiangGe Zhou (5)
HongMei Zeng (5)
Chun Li (4)
HouFang Lu (4) - 关键词：CCU ; mineralization ; potassium feldspar ; potassium salts ; CCS
- 刊名：Chinese Science Bulletin
- 出版年：2013
- 出版时间：January 2013
- 年：2013
- 卷：58
- 期：1
- 页码：128-132
- 全文大小：680KB
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YuFei Wang (1) (2)
Yang Ju (3)
Bin Liang (1) (4)
JiaHua Zhu (1) (4)
Ru Zhang (1)
LingZhi Xie (1)
Tao Liu (1) (2)
XiangGe Zhou (5)
HongMei Zeng (5)
Chun Li (4)
HouFang Lu (4)
1. Center of CCUS and CO2 Mineralization and Utilization, Sichuan University, Chengdu, 610065, China
2. Key Laboratory of Energy Engineering Safety and Mechanics on Disasters, The Ministry of Education, Sichuan University, Chengdu, 610065, China
3. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining Technology, Beijing, 100083, China
4. School of Chemical Engineering, Sichuan University, Chengdu, 610065, China
5. School of Chemistry, Sichuan University, Chengdu, 610065, China - ISSN：1861-9541
文摘
CO2 capture and storage (CCS) is an important strategy in combatting anthropogenic climate change. However, commercial application of the CCS technique is currently hampered by its high energy expenditure and costs. To overcome this issue, CO2 capture and utilization (CCU) is a promising CO2 disposal method. We, for the first time, developed a promising method to mineralize CO2 using earth-abundant potassium feldspar in order to effectively reduce CO2 emissions. Our experiments demonstrate that, after adding calcium chloride hexahydrate as an additive, the K-feldspar can be transformed to Ca-silicates at 800°C, which can easily mineralize CO2 to form stable calcium carbonate and recover soluble potassium. The conversion of this process reached 84.7%. With further study, the pretreatment temperature can be reduced to 250°C using hydrothermal method by adding the solution of triethanolamine (TEA). The highest conversion can be reached 40.1%. The process of simultaneous mineralization of CO2 and recovery of soluble potassium can be easily implemented in practice and may provide an economically feasible way to tackle global anthropogenic climate change.