Solubility Study of Nickel Ferrite in Boric Acid Using a Flow-Through Autoclave System under High Temperature and High Pressure

• Published in: Nuclear engineering and technology Vol. 48; no. 2; pp. 554 - 558
• Main Authors: Park, Yong Joon, Choi, Ke-Chon, Ha, Yeong-Keong
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.04.2016; Elsevier; 한국원자력학회
• Subjects: Flow-through Autoclave System; High Temperature; Solubility of Nickel Ferrite; 원자력공학; High Temperature; Solubility of Nickel Ferrite; Flow-through Autoclave System
• ISSN: 1738-5733; 2234-358X
• DOI: 10.1016/j.net.2016.01.001

The solubility of nickel ferrite in an aqueous solution of boric acid was studied by varying the pH at the temperatures ranging from 25°C to 320°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 H2, on the solubility of nickel ferrite was also evaluated.