Other Binders - Stabilization and Solidification of Hazardous, Radioactive, and Mixed Wastes - page 128

the sulfur polymer must be maintained in a molten state long enough to
drive off any moisture.

• Wastes containing high concentrations of nitrate are incompatible with

SPC encapsulation, as potentially dangerous reactions can occur when
sulfur, nitrate, and organics are mixed.

• Controls on process temperature are required to ensure heating does not

exceed 150°C to avoid an increase in viscosity and potential for degrada-
tion of the polymer or generation of toxic hydrogen sulfide gas.

REFERENCES

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2. McBee, W.C. and T.A. Sullivan, Development of Specialized Sulfur Concretes, RI

8346, United States Dept. of Interior, Bureau of Mines, 1979.

3. The Sulphur Institute, Sulphur Polymer Cement Concrete Design and Construction

Manual , Washington, D.C., 1994.

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