Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Solubility Study of Nickel Ferrite in Boric Acid Using a Flow-Through Autoclave System under High Temperature and High Pressure

  • Park, Yong Joon (Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute) ;
  • Choi, Ke-Chon (Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute) ;
  • Ha, Yeong-Keong (Nuclear Chemistry Research Division, Korea Atomic Energy Research Institute)
  • Received : 2015.09.16
  • Accepted : 2015.12.10
  • Published : 2016.04.25
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Abstract

The solubility of nickel ferrite in an aqueous solution of boric acid was studied by varying the pH at the temperatures ranging from $25^{\circ}C$ to $320^{\circ}C$. A flow-through autoclave system was specially designed and fabricated to measure the solubility of Fe in hydrothermal solutions under high temperature and pressure. The performance of this flow-through system was directly compared with the conventional static state technique using a batch-type autoclave system. The stability of fluid velocity for the flow-through autoclave system was verified prior to the solubility measurement. The influence of chemical additives, such as boric acid and $H_2$, on the solubility of nickel ferrite was also evaluated.

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References

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