• OpenAccess
  • Application of Carbon Dioxide and Polyacrylamide in Extracting Magnesium from Brine by Precipitation Method  [HOAC 2016]
  • DOI: 10.4236/gep.2016.47022   PP.194 - 200
  • Author(s)
  • Haiyan Hu, Lin Zhou, Qingguo Chen
  • In this paper, carbon dioxide and polyacrylamide were used to improve the method to abstract magnesium from desalination brine. Experimental results showed that calcium ion in the desali-nation brine can be effectively removed using carbon dioxide, which thereby improves the purity and reaction efficiency of the magnesium hydrate precipitate. 0.1% - 0.2% PAM could help to promote the precipitation of magnesium hydrate colloid. And when hydroxyl anion was between 110% - 130% of theoretical amount, yield of magnesium hydrate exceeds 70% at standing time of 60 hours.
  • Magnesium Element, Desalination Brine, Reverse Osmosis
  • References
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