Indirect CO2 mineral sequestration by steelmaking slag with NH4Cl as leaching solution

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	Indirect CO2 mineral sequestration by steelmaking slag with NH4Cl as leaching solution
	Sun, Yong 2; Yao, Ming-Shun 2; Zhang, Jing-Ping 1; Yang, Gang 1,2
刊名	CHEMICAL ENGINEERING JOURNAL
	2011-09-15
卷号	173 期号:2 页码:437-445
关键词	Steelmaking slag Mineralization CO2 sequestration
ISSN号	1385-8947
通讯作者	Yang, G
英文摘要	The steelmaking slag (SL) is used for indirect CO2 mineral sequestration. The optimized carbonation conditions include: initial pressure 10 bar, 60 degrees C, 400 rpm/min, 60 min duration. The high purity (96 +/- 2 wt%) calcium carbonate is obtained under the optimized carbonation condition. The crystallite magnesium carbonate together with other impurities such as aluminum oxide, ferrous oxide, silica oxide, also exists in the precipitate with composition percentage below 2 wt%. The characterization of the obtained precipitates at different temperatures by SEM shows the gradual morphological changes from scalenohedral to rhombohedral crystal with increase of carbonation temperature (within 20-80 degrees C). The kinetic shows a fast reaction rate with 11.8 kJ/mol apparent activation energy, indicating a diffusion determined core-shrinking reaction during carbonation. The CO2 capture capacity was compared to different sequestration routes using different industrial wastes. The maximum capacity from our experimental result could reach 211 kg CO2/ton SL with the contribution of CaCO3/MgCO3 together with Mg(HCO3)(2) in capturing CO2. (C) 2011 Elsevier B.V. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	CARBON-DIOXIDE ; ACETIC-ACID ; CAPTURE ; STORAGE
收录类别	SCI
语种	英语
WOS记录号	WOS:000295753700022
公开日期	2013-10-30
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/4574]
专题	过程工程研究所_生化工程国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, Beijing 100081, Peoples R China 2.Anpeng Alkaline High Tech Co Ltd, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Sun, Yong,Yao, Ming-Shun,Zhang, Jing-Ping,et al. Indirect CO2 mineral sequestration by steelmaking slag with NH4Cl as leaching solution[J]. CHEMICAL ENGINEERING JOURNAL,2011,173(2):437-445.
APA	Sun, Yong,Yao, Ming-Shun,Zhang, Jing-Ping,&Yang, Gang.(2011).Indirect CO2 mineral sequestration by steelmaking slag with NH4Cl as leaching solution.CHEMICAL ENGINEERING JOURNAL,173(2),437-445.
MLA	Sun, Yong,et al."Indirect CO2 mineral sequestration by steelmaking slag with NH4Cl as leaching solution".CHEMICAL ENGINEERING JOURNAL 173.2(2011):437-445.