TY - GEN
T1 - Metals immobilization and removal rates of Se(IV) and Se(VI) by steel slag fines media
AU - Jagupilla, S. C.
AU - Grubb, D. G.
AU - Wazne, M.
PY - 2012
Y1 - 2012
N2 - Batch kinetics and column studies were conducted using freshly crushed steel slag fines (SSF) media to immobilize Se(IV) and Se(VI). The SSF media was characterized as USCS SP type soil with <5% passing the No. 200 (0.075 mm) sieve. Despite its granular nature, the mineralogy and residual lime content of the SSF media make it quite reactive. Accordingly, batch (immobilization) rates of Se by the SSF media were evaluated using aqueous Se(IV) and Se(VI) salt solutions having target doses equivalent to 10,000 mg/kg (500 mg/L equivalent). The percent removal of Se(VI) and Se(VI) by SSF was about 94% and 6%, respectively after 18 hrs mixing time. Column studies were also conducted to evaluate the selenium removal at lower influent concentrations (30 to 40 mg/L), but typically in excess of dissolved Se concentrations observed in the Western US groundwaters and acid mine drainage leachates.
AB - Batch kinetics and column studies were conducted using freshly crushed steel slag fines (SSF) media to immobilize Se(IV) and Se(VI). The SSF media was characterized as USCS SP type soil with <5% passing the No. 200 (0.075 mm) sieve. Despite its granular nature, the mineralogy and residual lime content of the SSF media make it quite reactive. Accordingly, batch (immobilization) rates of Se by the SSF media were evaluated using aqueous Se(IV) and Se(VI) salt solutions having target doses equivalent to 10,000 mg/kg (500 mg/L equivalent). The percent removal of Se(VI) and Se(VI) by SSF was about 94% and 6%, respectively after 18 hrs mixing time. Column studies were also conducted to evaluate the selenium removal at lower influent concentrations (30 to 40 mg/L), but typically in excess of dissolved Se concentrations observed in the Western US groundwaters and acid mine drainage leachates.
UR - https://www.scopus.com/pages/publications/84888352461
UR - https://www.scopus.com/inward/citedby.url?scp=84888352461&partnerID=8YFLogxK
U2 - 10.1061/9780784412121.414
DO - 10.1061/9780784412121.414
M3 - Conference contribution
AN - SCOPUS:84888352461
SN - 9780784412121
T3 - Geotechnical Special Publication
SP - 4033
EP - 4041
BT - GeoCongress 2012
T2 - GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering
Y2 - 25 March 2012 through 29 March 2012
ER -