Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Development of hybrid resin to reduce silica in borated water

  • Ramzan Akhtar (Department of Chemistry, Pakistan Institute of Engineering & Applied Sciences (PIEAS)) ;
  • Shahid Latif (Chashma Nuclear Power Complex) ;
  • Syed Aizaz Ali Shah (Department of Chemistry, Pakistan Institute of Engineering & Applied Sciences (PIEAS)) ;
  • Shaukat Saeed (Department of Chemistry, Pakistan Institute of Engineering & Applied Sciences (PIEAS)) ;
  • Abdul Aziz (Chashma Nuclear Power Complex)
  • Received : 2022.12.04
  • Accepted : 2023.04.06
  • Published : 2023.07.25
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Abstract

Amberlite IRN-78 resin was incorporated with iron to make a hybrid resin for the removal of silica from the borated water of nuclear power plants. The hybrid resin contained 0.84 wt % iron compounds upon pyrolysis. In batch experiments carried out at room temperature, 1 g of the hybrid resin removed ~60 ㎍ silica from 1 ppm borated water in ~120 min. The efficiency of the hybrid material increased with the resin quantity, decreased with silica concentration, and remained unchanged at different pH values. Freundlich and Temkin isothermal adsorption dominated the silica removal process and followed the pseudo-first-order and intra-particle diffusion mechanism simultaneously. The concentration of the leached iron remained appreciably under the safe limits of 200 ㎍/l during the experiments. This detailed study suggests the use of hybrid resin for the removal of silica from borated water streams and other similar systems.

Keywords

Acknowledgement

The authors are thankful to Chashma Nuclear Power Complex Unit-2 for providing funding to carry out this study and to Mr. Naveed Shahzad, for providing support during research work.

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