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Enhanced Hydromagnesite Process for CO2 Sequestration by Desilication of Serpentine Ore in NaOH Solution
Zhang, Xiaojuan2,3; Zeng, Yan1; Li, Zhibao2
2020-06-24
Source PublicationINDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
ISSN0888-5885
Volume59Issue:25Pages:11370-11380
AbstractA new CO2 fixation process was highly enhanced by desilication of serpentine ore with concentrated NaOH solution and NH3 recycling. In the process, desilicated serpentine containing up to 83 wt % MgO after leaching is treated by NH4Cl solution, from which MgCl2 solution and NH3 gas are generated and are used to capture CO2. Hydromagnesite is produced from the reaction between ammonium carbonate and MgCl(2)( )solution at ambient temperature. The Phase-transition diagram of magnesium carbonate was constructed with the OLI-based chemical model. The leaching behavior of serpentine in concentrated NaOH was systematically studied. Parameters including the initial NaOH concentration, leaching temperature, solid-to-liquid ratio, and reaction time were investigated to achieve efficient separation of Si and Mg. The validity of the proposed process is successfully verified step by step and the target product of hydromagnesite is obtained. The synthetic hydromagnesite exhibit the same structure and similar morphology as natural hydromagnesite. Moreover, valuable 2% Ni-bearing minerals were also produced.
DOI10.1021/acs.iecr.0c01600
Language英语
WOS KeywordCARBON-DIOXIDE ; MINERAL CARBONATION ; CAPTURE TECHNOLOGY ; MAGNESITE ; KINETICS ; PRECIPITATION ; TEMPERATURES ; DISPOSAL ; AMMONIA ; SYSTEM
Funding ProjectNational Science Foundation of China[21776279] ; National Science Foundation of China[21978290]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Science Foundation of China
WOS IDWOS:000543786200002
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/41172
Collection中国科学院过程工程研究所
Corresponding AuthorZeng, Yan; Li, Zhibao
Affiliation1.McGill Univ, Mat Engn, Montreal, PQ H3A 0CS, Canada
2.Chinese Acad Sci, Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
Recommended Citation
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Zhang, Xiaojuan,Zeng, Yan,Li, Zhibao. Enhanced Hydromagnesite Process for CO2 Sequestration by Desilication of Serpentine Ore in NaOH Solution[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2020,59(25):11370-11380.
APA Zhang, Xiaojuan,Zeng, Yan,&Li, Zhibao.(2020).Enhanced Hydromagnesite Process for CO2 Sequestration by Desilication of Serpentine Ore in NaOH Solution.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,59(25),11370-11380.
MLA Zhang, Xiaojuan,et al."Enhanced Hydromagnesite Process for CO2 Sequestration by Desilication of Serpentine Ore in NaOH Solution".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 59.25(2020):11370-11380.
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