CaCO3 Precipitation Kinetics in the System CaCl2-CO2-Mg(OH)(2)-H2O for Comprehensive Utilization of Soda Production Wastes

doi:10.1021/acssuschemeng.0c07467

	CaCO3 Precipitation Kinetics in the System CaCl2-CO2-Mg(OH)(2)-H2O for Comprehensive Utilization of Soda Production Wastes
	Zhang, Xiaojuan 1,2; Asselin, Edouard 3; Li, Zhibao 2
刊名	ACS SUSTAINABLE CHEMISTRY & ENGINEERING
	2021-01-11
卷号	9 期号:1 页码:398-410
关键词	CaCO3 precipitation Soda waste Reaction kinetics Crystallization MgCl2 center dot 6H(2)O NaCl recovery
ISSN号	2168-0485
DOI	10.1021/acssuschemeng.0c07467
英文摘要	The precipitation of CaCO3 and its kinetics for the CaCl2-CO2-Mg(OH)(2)-H2O system were systematically studied to develop a novel process for eliminating solid and liquid waste from the Solvay soda process. The effects of operating conditions including temperature, CaCl2 concentration, flow rate of CO2, and stirring speed on the reaction kinetics were experimentally determined. The results revealed that low temperature, high CO2 flow rate, and fast stirring speed can accelerate the reaction rate, and the mass transfer of CO2 is the controlling step. An MSMPR crystallizer was used to obtain the experimental crystal size distribution (CSD). A simplified population balance equation (PBE) was used to correlate the parameters on the basis of supersaturation. The soda solid and liquid wastes discharged from the Solvay industry were used as raw material to test the new process and validate the methodology. The precipitated CaCO3 consists of calcite or aragonite with high purity and uniform CSD. A double-effect evaporative-cooling crystallization process to recover MgCl2 center dot 6H(2)O and NaCl was simulated with help of Aspen plus and the electrolyte-NRTL (ELENRTL) model, suggesting economic benefits.
资助项目	National Science Foundation of China[21978290] ; National Science Foundation of China[21776279]
WOS关键词	CALCIUM-CARBONATE ; CRYSTALLIZATION ; AGGREGATION ; GROWTH ; SOLUBILITIES ; TEMPERATURE ; NUCLEATION ; POLYMORPHS ; SIMULATION ; ARAGONITE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000610827900036
资助机构	National Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/43353]
专题	中国科学院过程工程研究所
通讯作者	Li, Zhibao
作者单位	1.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 3.Univ British Columbia, Dept Mat Engn, Columbia, BC V6T 1Z4, Canada
推荐引用方式 GB/T 7714	Zhang, Xiaojuan,Asselin, Edouard,Li, Zhibao. CaCO3 Precipitation Kinetics in the System CaCl2-CO2-Mg(OH)(2)-H2O for Comprehensive Utilization of Soda Production Wastes[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2021,9(1):398-410.
APA	Zhang, Xiaojuan,Asselin, Edouard,&Li, Zhibao.(2021).CaCO3 Precipitation Kinetics in the System CaCl2-CO2-Mg(OH)(2)-H2O for Comprehensive Utilization of Soda Production Wastes.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,9(1),398-410.
MLA	Zhang, Xiaojuan,et al."CaCO3 Precipitation Kinetics in the System CaCl2-CO2-Mg(OH)(2)-H2O for Comprehensive Utilization of Soda Production Wastes".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 9.1(2021):398-410.