Environmental management/Refinery cyanides: a regulatory dilemma

Conference · Sun Jan 01 00:00:00 EST 1978 · Hydrocarbon Process.; (United States)

OSTI ID:6540663

Kunz, R G ^[1]; Casey, J P; Huff, J E

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1. Air Prod. and Chem. Inc.

A discussion of refinery cyanide control, which is a regulatory dilemma for both agencies and refiners, shows that inadequate understanding of refinery cyanide chemistry and inherent limits in control mechanics have confused the problem; and covers the various cyanide species (free, simple, and complex); cyanide toxicity; current federal and state cyanide regulations for effluents; the occurrence and stability of simple and complex cyanides occurring in the refinery; cyanide-induced corrosion, and the use of polysulfides as inhibitors; analytical problems, owing to the failure of available methods to differentiate between simple and strongly complexed cyanides and thiocyanate interference; the modified Roberts/Jackson method, which is currently being tested as an ASTM Method and which apparently comes closest to the original EPA guideline to identify and restrict only free cyanide in refinery effluents; cyanide removal via chemical oxidation, biotreatment, absorption and catalytic oxidation, ion exchange, and precipitation; and the need for further work on the toxicity of complex cyanides in receiving streams.

• OSTI ID: 6540663
• Report Number(s): CONF-770420-
• Journal Information: Hydrocarbon Process.; (United States), Vol. 57:10; Conference: National conference on treatment and disposal of industrial wastewaters and residues, Houston, TX, USA, 26 Apr 1977
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CHEMICAL EFFLUENTS
CHEMICAL ANALYSIS
CYANIDES
REMOVAL
TOXICITY
PETROLEUM REFINERIES
CHEMICAL REACTIONS
POLLUTION REGULATIONS
WASTE PROCESSING
INDUSTRIAL PLANTS
MANAGEMENT
PROCESSING
REGULATIONS
WASTE MANAGEMENT
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)