John Lawrence Fast
Engineers at Flatiron Rd, Littleton, CO
License number
Colorado 13189
Issued Date
Feb 15, 1975
Renew Date
Nov 1, 2015
Expiration Date
Oct 31, 2017
Type
Professional Engineer
Address
Address
10641 Flatiron Rd, Littleton, CO 80124
Professional information
Method And Apparatus For Removing Metal Contamination From Soil
US Patent:
5466426, Nov 14, 1995
Filed:
Aug 11, 1993
Appl. No.:
8/104979
Inventors:
William E. Fristad - Santa Rosa CA
Jeffrey L. Narum - Santa Rosa CA
Phillip L. Mattison - Santa Rosa CA
Michael J. Virnig - Santa Rosa CA
John Fast - Littleton CO
Jeffrey L. Narum - Santa Rosa CA
Phillip L. Mattison - Santa Rosa CA
Michael J. Virnig - Santa Rosa CA
John Fast - Littleton CO
Assignee:
Cognis, Inc. - Santa Rosa CA
International Classification:
C22B 1100
US Classification:
423 98
Abstract:
The invention is a process and an apparatus for removing metal contamination from soil. In the method, the soil is treated to produce soil with a small particle size. The particulate soil is then separated into a coarse fraction and a fine fraction. The coarse fraction and the fine fraction are contacted with a leach solution in separate contacting zones to remove the metal contamination from the soil, the metal is removed from the leach solution and the leach solution recycled to the leaching zones.
Apparatus And Process For Recovering Metal From An Aqueous Solution
US Patent:
5454917, Oct 3, 1995
Filed:
Sep 3, 1993
Appl. No.:
8/116839
Inventors:
Phillip L. Mattison - Santa Rosa CA
William E. Friestad - Santa Rosa CA
John Fast - Littleton CO
William E. Friestad - Santa Rosa CA
John Fast - Littleton CO
Assignee:
Cognis, Inc. - Santa Rosa CA
International Classification:
C02F 1461
US Classification:
204150
Abstract:
The invention is an apparatus and process for recovering metal from a solution. This apparatus is a structure having an anode formed from a plurality of reducing metal elements and a cathode formed from a high surface area electrically conductive material such as metal wire. The reducing metal elements of the anode have a more negative standard state reduction potential than the metal to be recovered. This invention is also a process in which a metal is recovered by contacting a solution of a metal to be recovered with the apparatus of the invention.
Method And Apparatus For Removing Metal Contamination From Soil
US Patent:
5607060, Mar 4, 1997
Filed:
Jun 6, 1995
Appl. No.:
8/469607
Inventors:
William E. Fristad - Santa Rosa CA
Jeffrey L. Narum - Santa Rosa CA
Phillip L. Mattison - Santa Rosa CA
Michael J. Virnig - Santa Rosa CA
John Fast - Littleton CO
Jeffrey L. Narum - Santa Rosa CA
Phillip L. Mattison - Santa Rosa CA
Michael J. Virnig - Santa Rosa CA
John Fast - Littleton CO
Assignee:
Henkel Corporation - Plymouth Meeting PA
International Classification:
B03B 700, C22B 1100
US Classification:
209 122
Abstract:
The invention is a process and an apparatus for removing metal contamination from soil. In the method, the soil is treated to produce soil with a small particle size. The particulate soil is then separated into a coarse fraction and a fine fraction. The coarse fraction and the fine fraction are contacted with a leach solution in separate contacting zones to remove the metal contamination from the soil, the metal is removed from the leach solution and the leach solution recycled to the leaching zones.