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CaCO3 Precipitation Kinetics in the System CaCl2-CO2-Mg(OH)(2)-H2O for Comprehensive Utilization of Soda Production Wastes
Zhang, Xiaojuan1,2; Asselin, Edouard3; Li, Zhibao1
2021-01-11
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN2168-0485
Volume9Issue:1Pages:398-410
AbstractThe 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.
KeywordCaCO3 precipitation Soda waste Reaction kinetics Crystallization MgCl2 center dot 6H(2)O NaCl recovery
DOI10.1021/acssuschemeng.0c07467
Language英语
WOS KeywordCALCIUM-CARBONATE ; CRYSTALLIZATION ; AGGREGATION ; GROWTH ; SOLUBILITIES ; TEMPERATURE ; NUCLEATION ; POLYMORPHS ; SIMULATION ; ARAGONITE
Funding ProjectNational Science Foundation of China[21978290] ; National Science Foundation of China[21776279]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical
Funding OrganizationNational Science Foundation of China
WOS IDWOS:000610827900036
PublisherAMER CHEMICAL SOC
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/43354
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Zhibao
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Univ British Columbia, Dept Mat Engn, Columbia, BC V6T 1Z4, Canada
Recommended Citation
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.
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