Liquid purification or separation – Processes – Chemical treatment
Patent
1987-06-05
1989-02-07
Sever, Frank
Liquid purification or separation
Processes
Chemical treatment
210766, 210774, B01D 1700
Patent
active
048029955
ABSTRACT:
A method for decomposing the cyanide radical in cyanide-bearing wastes or materials. The cyanide radical of cyanide compounds contained in cyanide-bearing wastes or materials is chemically decomposed. In the preferred embodiment, the cyanide-bearing waste or material and water are introduced into a closed retort. The closed retort is heated and maintained at a temperature above a critical temperature and the cyanide radical is decomposed by reaction with water. At least two new compounds are formed, one of which contains the carbon constituent and the other of which contains the nitrogen constituent of the cyanide radical. The gaseous components which form in the closed retort are vented therefrom and may be condensed. The nongaseous components which form in the closed retort are accumulated therein and removed periodically.
REFERENCES:
patent: 3878289 (1975-04-01), Beavon
patent: 3920505 (1975-11-01), Helleur
patent: 4071448 (1978-01-01), Watanabe et al.
patent: 4079585 (1978-03-01), Helleur
patent: 4116830 (1978-09-01), Krogsrud
patent: 4155804 (1979-05-01), Edge, Jr.
patent: 4271013 (1981-06-01), Bhattacharyya
patent: 4341641 (1982-07-01), Novak
patent: 4417963 (1983-11-01), Janne
patent: 4437417 (1984-03-01), Roberts
patent: 4543189 (1985-09-01), Rice et al.
Brag, J. L., Non-Ferrous Metallargy, John Wiley & Sons, NY, NY (1941), pp. 324-325.
Torpy, M. F. Journal Water Pollution Control Federation, Electroplating and Cyanide Wastes, vol. 51, No. 6 (Jun. 1979) pp. 1399-1401.
Vol. 4, Metals Handbook (9th ed.), American Society for Metals, pp. 227-229 & 248-249.
Torpy, M. F., Journal WPCF, Electroplating and Cyanide Wastes, Jun. 1978 pp. 1270-1277.
Cadotte, A. P., Ontario Res. Foundation, Final Report P-3083/I-3 AES Res. Prog. 53 (6-10-80) & Proposal P-3083/I Revised (7-24-79).
Clennel, J. E. The Cyanide Handbook, McGraw-Hill, NY, NY, (2nd ed. 1915), pp. 62-83 & 102-119.
Kirk-Othmer, Concise Encyclopedia of Chemical Technology, John Wiley & Sons, N.Y., N.Y. (1985), pp. 333-335, 337, 788, 789.
Author Unknown, Electroplating & Metal Finishing Operations, EPA Document, pp. 105, 127, 128, 144-187.
Matasa, C. et al, Basic Nitrogen Compounds, 3rd ed., Chemical Publishing Co., Inc. N.Y. 1973, pp. 392-420.
Vol. 2 Metals Hand Book, ASM (8th ed. 1964) pp. 145 & 417, Heat Treating, Cleaning & Finishing.
Chemical Abstracts, vol. 83, 1975, 60-Sewage Wastes paragraph 32753c.
Dvorscek John
Jarnholm Arne R.
Rostoker William
Jarnholm Arne R.
Rostoker, Inc.
Sever Frank
LandOfFree
Method for decomposing the cyanide radical in cyanide-bearing wa does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for decomposing the cyanide radical in cyanide-bearing wa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for decomposing the cyanide radical in cyanide-bearing wa will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1083497