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Article

  • Title

    Calcium carbonate synthesis with prescribed properties based on liquid waste of soda production

  • Authors

    Mikhailova Evgenia O.
    Panasenko Volodymyr O.
    Markova Natalia B.

  • Subject

    CHEMISTRY. CHEMICAL ENGINEERING

  • Year 2016
    Issue 2(49)
    UDC 661.842.091:661.333.002.84
    DOI 10.15276/opu.2.49.2016.18
    Pages 122-128
  • Abstract

    A promising direction in solving of environmental problems of soda industry is the development of low-waste resource-saving technologies, which consist in recycling of valuable waste components with obtaining the commercial products. Aim: The aim is to establish the optimal conditions for obtaining calcium carbonate with prescribed properties from liquid waste of soda production. Materials and Methods: Chemically deposited calcium carbonate is used as filler and should have certain physical and chemical properties. To obtain a product of prescribed quality the process of calcium carbonate deposition was performed of still waste liquid, that is the waste of calcium carbonate production and contain significant amount of calcium ions, and excessive production of the purified stock solution of sodium bicarbonate, which is composed of carbonate and hydrocarbonate ions. Results: The dependence of bulk density and specific surface area of calcium carbonate sediments and degree of deposition from such technological parameters are established: method of mixing the stock solutions, the concentration and molar ratio of reactants, temperature and reaction time. Conclusions: The optimal mode of deposition process is determined and the concept of production of calcium carbonate is developed. The quality of calcium carbonate meets the modern requirements of high dispersion, low bulk density and evolved specific surface of the product.

  • Keywords calcium carbonate, chemical deposition, waste of sodium production
  • Viewed: 596 Dowloaded: 11
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  • References

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