Metal elution from Ni- and Fe-based alloy reactors under hydrothermal conditions.
Elution of metals from Ni- and Fe-based alloy (i.e. Inconel 625 and SUS 316) under hydrothermal conditions was investigated. Results showed that metals could be eluted even in a short contact time. At subcritical conditions, a significant amount of Cr was extracted from SUS 316, while only traces of Ni, Fe, Mo, and Mn were eluted. In contrast, Ni was removed in significant amounts compared to Cr when Inconel 625 was tested. Several factors including temperature and contact time were found to affect elution behavior. The presence of air in the fluid even promoted elution under subcritical conditions.
Faisal
Muhammad
M
Department of Ecological Engineering, Toyohashi University of Technology, G-614 Tempaku-cho, Toyohashi 441-8580, Japan.
Quitain
Armando T
AT
Urano
Shin-Ya
SY
Daimon
Hiroyuki
H
Fujie
Koichi
K
D000388:Air; D000497:Alloys / Q000737:chemistry*; D002857:Chromium / Q000737:chemistry; D007220:Industrial Waste / Q000517:prevention & control; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D009532:Nickel / Q000737:chemistry*; D013696:Temperature; D014867:Water / Q000737:chemistry*; D018508:Water Purification / Q000379:methods
D000497:Alloys; D007220:Industrial Waste; D014867:Water; D002857:Chromium; D009532:Nickel; D007501:Iron