Raymond J Kerollis

US Patent:

60902906, Jul 18, 2000

Filed:

Jan 25, 1994

Appl. No.:

8/186343

Inventors:

Donald J. Goodman - Pittsford NY
Raymond E. Kerollis - Hightstown NJ
Albert B. Mindler - Princeton NJ
Bruce Bruns - Lawrenceville NJ

Assignee:

Xerox Corporation - Stamford CT

International Classification:

C02F 154
C02F 170

US Classification:

210666

Abstract:

A method for removing selenium from waste water is disclosed comprising reducing selenium oxide with carbohydrazide in a solution comprised of the selenium oxide to form elemental selenium.

US Patent:

52699447, Dec 14, 1993

Filed:

May 14, 1992

Appl. No.:

7/882703

Inventors:

Raymond E. Kerollis - Hightstown NJ
Edgar R. Mowrey - Princeton NJ

Assignee:

International Process Technology, Inc. - Lake Worth FL

International Classification:

C02F 176

US Classification:

210754

Abstract:

A method of treating untreated water containing hydrogen sulfide by adjusting the pH of the untreated water to a pH level of no greater than 6. 0 and thereafter converting the hydrogen sulfide in the pH treated water to sulfuric acid while adjusting the pH of the water to a level sufficient to prevent the formation of elemental sulfur.