Patent Number: 6,251,283

Title: Methods for removing selenium from a waste stream

Abstract: The present invention is directed to a method for removing selenium from a waste stream. The process is a multi-step process that removes selenium from a waste stream in the form of barium selenate and/or barium selenite. In a further step, the barium selenate and/or barium selenite forms a complex precipitate with barium sulfate, which encapsulates the barium selenate and/or barium selenite. The complex precipitate is subsequently removed from the waste stream.

Inventors: Centofanti; Louis (Atlanta, GA), Self; Randy (Gainesville, FL), Yarbrough; Tommy W. (Gainesville, FL)

Assignee: Perma-Fix Environmental Services, Inc.

International Classification: C02F 1/72 (20060101); C02F 1/58 (20060101); C02F 001/58 ()

Expiration Date: 06/26/2018