公开(公告)号：US09850129B2

公开(公告)日：2017-12-26

申请号：US14762682

申请日：2014-01-27

Applicant: BROMINE COMPOUNDS LTD.

Inventor： Sarit Sarmili ,  Gideon Friedman ,  Eyal Barnea ,  David Fuks ,  Mira Bergstein Freiberg

IPC: C01F11/34 ,  C01B21/48 ,  C01B9/04 ,  B01D11/04

CPC classification number: C01B9/04 ,  B01D11/0446 ,  B01D11/0492 ,  C01B21/48 ,  C01F11/34

Abstract: A solvent extraction process for recovering bromide from a sulfate-containing aqueous stream, the process comprises an extraction step wherein said aqueous stream is mixed with an extraction medium comprising a tertiary amine extractant dissolved in one or more water-immiscible organic solvents, wherein said mixing is carried out in a strongly acidic environment, thereby forming bromide-containing extract and a raffinate with a reduced bromide level, wherein the bromide-containing extract is optionally treated to further minimize the presence of sulfate and is subsequently combined with an aqueous calcium source to form calcium bromide.