DOI: 10.1016/j.jcou.2018.05.023
Scopus记录号: 2-s2.0-85050337863
论文题名: Impurity ions effect on CO2 mineralization via coupled reaction-extraction-crystallization process of CaCl2 waste liquids
作者: Dong C. ; Song X. ; Li Y. ; Liu C. ; Chen H. ; Yu J.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 27 起始页码: 115
结束页码: 128
语种: 英语
英文关键词: Calcium carbonate
; CO2 mineralization
; Distiller waste
; Impurity ions effect
; Morphology
Scopus关键词: Atomic emission spectroscopy
; Calcite
; Calcium carbonate
; Carbon dioxide
; Crystal impurities
; Energy dispersive spectroscopy
; Extraction
; Inductively coupled plasma
; Ions
; Mineralogy
; Morphology
; Particle size
; Particle size analysis
; Scanning electron microscopy
; Thermogravimetric analysis
; CO2 mineralization
; Coupled reaction
; Crystallization process
; Energy dispersive X ray spectroscopy
; Impurity ions
; Inductively coupled plasma atomic emission spectroscopy
; Particle size analyzers
; X ray diffractometers
; Chlorine compounds
英文摘要: The CaCl2-rich distiller waste discharged in the Solvay process has not been recycled comprehensively. A novel CO2 mineralization route with waste CaCl2 solutions via coupled reaction-extraction-crystallization technique was proposed. The effect of Na+, K+, Mg2+, Al3+, NO3 - and SO4 2- ions which exist in the distiller waste on the conversion of CaCl2 as well as the morphology of product CaCO3 was studied with the aid of titration, Scanning Electron Microscope (SEM), Energy-Dispersive X-ray Spectroscopy (EDS), Particle Size Analyzer, X-ray Diffractometer (XRD), Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES) and Thermogravimetry (TG). Among the ions, Na+, K+ and NO3- have little influence that could be ignored. Both Al3+ and SO4 2- are adsorbed on the surface of vaterite and inhibit the transformation to calcite by lowering down the surface energy. Therefore, small particles with diameters of less than 10 μm even 1 μm which are hard to be filtered are formed. While for Mg2+, the effect is negligible when the content is less than 5 wt %. However, as the content increases, Mg2+ could not only be adsorbed on the surface but also insert into the crystal lattice of CaCO3, forming the worm-like Mg-calcite. Finally, the experiment of simulated distiller waste was investigated to take a very important step towards industrialization. © 2018 Elsevier Ltd. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111795
Appears in Collections: 气候减缓与适应
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作者单位: National Engineering Research Center for Integrated Utilization of Salt Lake Resource, East China University of Science and Technology, Meilong Road 130, Shanghai, 200237, China; Wanhua Chemical Group Co., Ltd., Tianshan Road 17, Yantai, 264006, China
Recommended Citation:
Dong C.,Song X.,Li Y.,et al. Impurity ions effect on CO2 mineralization via coupled reaction-extraction-crystallization process of CaCl2 waste liquids[J]. Journal of CO2 Utilization,2018-01-01,27