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1. (WO2018204589) REMOVAL OF SELENOCYANATE FROM INDUSTRIAL WATER SYSTEMS WITH SULFIDED METAL ADSORBENTS

Pub. No.:    WO/2018/204589    International Application No.:    PCT/US2018/030810
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Fri May 04 01:59:59 CEST 2018
IPC: C02F 1/28
C02F 1/58
B01J 20/02
C01B 19/00
Applicants: UOP LLC
Inventors: PATWARDHAN, Rashmi
BALL, Jon, E.
BOLLAPRAGADA, Kiran
CASKEY, Stephen, R.
Title: REMOVAL OF SELENOCYANATE FROM INDUSTRIAL WATER SYSTEMS WITH SULFIDED METAL ADSORBENTS
Abstract:
The invention provides a bound sulfided metal containing metals such as nickel, cobalt, iron or manganese or zinc for removing selenocyanate from aqueous streams. The binder may be alumina, silica, clay or metal oxide. The amount of sulfur in the bound sulfided metal may range from 5-75% by weight. In one embodiment, the bound sulfided metal is formed and reduced and placed in a column system that comprises one or more columns and may comprise a Lead-Lag1-Lag2-Polisher series of columns.