The Dissolution Rate Constant of Magnetite in Water at Different Temperatures and Neutral or Ammoniated Chemistry Conditions
36th Annual CNS-CNA Student Conference - 2012 June 12


Presented at:
36th Annual CNS-CNA Student Conference
2012 June 12
Location:
Saskatoon, Canada
Session Title:
CNS/CNA Student Conference 2012

Authors:
Khatereh Mohajery (University of New Brunswick)
Derek Lister (University of New Brunswick)
  

Abstract

Abstract In this study, the dissolution rate constants of magnetite were measured at various water chemistry conditions and different temperatures, corresponding to several feedwater conditions of water-cooled reactors. Sintered magnetite pellets were used as the dissolving material and these were mounted in a jet-impingement apparatus in a recirculating water loop. Exposures were carried out at temperatures of 25, 55 and 140ºC and pHs of neutral and 9.2 (controlled with ammonia). Average dissolution rate constants were estimated by measuring the volume of lost material with a profilometry technique.

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