Suppression of Cyanide Formation in Hall Process Potlining

EPA Contract Number: 68D00034
Title: Suppression of Cyanide Formation in Hall Process Potlining
Investigators: Keller, Rudolf
Small Business: EMEC Consultants
EPA Contact: Manager, SBIR Program
Phase: I
Project Period: July 1, 1990 through January 1, 1991
Project Amount: $50,000
RFA: Small Business Innovation Research (SBIR) - Phase I (1990) RFA Text |  Recipients Lists
Research Category: SBIR - Pollution Prevention , Pollution Prevention/Sustainable Development , Small Business Innovation Research (SBIR)


Spent potlining from industrial primary aluminum produc- tion cells is a designated hazardous material because of its cyanide content. Over 100,000 tons of this material are annually landfilled in the United States.

It would be desirable to avoid the formation of cyanide during the operation of the cells. EMEC Consultants pro- pose to investigate the conditions at which cyanides form and migrate within the cell. It is hoped that ways to eliminate the formation of cyanide can be identified. A possible, proprietary approach is already outlined in the proposal. The experimental investigation of its feasibility is prepared in Phase 1, then planned to actually be initiated on industrial electrolyzers in Phase II.

Supplemental Keywords:

RFA, Scientific Discipline, Toxics, Waste, Sustainable Industry/Business, Chemical Engineering, cleaner production/pollution prevention, Environmental Chemistry, Chemistry, HAPS, Analytical Chemistry, Hazardous Waste, Engineering, Hazardous, 33/50, Environmental Engineering, cyanide solutions, cyanide, spent potliner (SPL), suppression of cyanide formation, cleaner production, environmentally conscious manufacturing, clean technology, cyanide compounds, aluminum production, Cyanide Compounds1, hall process potlining, cyanide suppression, pollution prevention, industrial innovations

Progress and Final Reports:

  • Final