RESULTS OF ANALYSES OF MACROBATCH 3 DECONTAMINATED SALT SOLUTION (DSS) COALESCER AND PRE-FILTERS

Peters, T. ; Fondeur, F. ; Fink, S.

Savannah River Site (S.C.)

关键词: Leaching;    Aluminium;    Decontamination;    Hydroxides;    Fouling;   

DOI  :  10.2172/1045911
RP-ID  :  SRNL-STI-2011-00513
RP-ID  :  DE-AC09-08SR22470
RP-ID  :  1045911

美国|英语

来源: UNT Digital Library

【 摘 要 】

SRNL analyzed the pre-filter and Decontamination Salt Solution (DSS) coalescer from MCU by several analytical methods. The results of these analyses indicate that overall there is light to moderate solids fouling of both the coalescer and pre-filter elements. The majority of the solids contain aluminum, sodium, silicon, and titanium, in oxide and/or hydroxide forms that we have noted before. The titanium is presumably precipitated from leached, dissolved monosodium titanate (MST) or fines from MST at ARP, and the quantity we find is significantly greater than in the past. A parallel report discusses potential causes for the increased leaching rate of MST, showing that increases in free hydroxide concentration of the feed solutions and of chemical cleaning solutions lead to faster leaching of titanium.