CORROSION STUDY FOR THE EFFLUENT TREATMENT FACILITY (ETF) CHROME (VI) REDUCTANT SOLUTION USING 304 & 316L STAINLESS STEEL

DUNCAN, J.B.

Hanford Site (Wash.)

关键词: Corrosion;    Oxidation;    Sodium;    Regeneration;    Organic Ion Exchangers;   

DOI  :  10.2172/910133
RP-ID  :  RPP-PLAN-34065 REV 0
RP-ID  :  DE-AC27-99RL14047
RP-ID  :  910133

美国|英语

来源: UNT Digital Library

【 摘 要 】

The Effluent Treatment Facility has developed a method to regenerate spent resin from the groundwater pump and treat intercepting chrome(VI) plumes (RPP-RPT-32207, Laboratory Study on Regeneration of Spent DOWEX 21K 16-20 Mesh Ion Exchange Resin). Subsequent laboratory studies have shown that the chrome(VI) may be reduced to chrome(III) by titrating with sodium metabisulfite to an oxidation reduction potential (ORP) of +280 mV at a pH of 2. This test plan describes the use of cyclic potentiodynamic polarization and linear polarization techniques to ascertain the electrochemical corrosion and pitting propensity of the 304 and 316L stainless steel in the acidified reducing the solution that will be contained in either the secondary waste receiver tank or concentrate tank.