Many waste solutions and sludges contaminated with heavy metals are generated during aircraft maintenance operations at various Air Force Air Logistics Centers. The disposal of these waste streams by previously acceptable means has led to problems with the contamination of both soil and groundwater. Available technologies for treating contaminated soils are expensive. In situ immobilization of heavy metals is a cost-effective treatment alternative to alleviate the environmental and health hazards associated with contaminated soils. The objective of the program was the laboratory evaluation of various treatment chemicals for the in situ immobilization of hexavalent chromium, cadmium, nickel, copper and zinc in soils from Air Force facilities in the United States.


Engineers and scientists dealing with solid waste pollution and controls.

Table of Contents

Contents and Subject Index Executive Summary Introduction Test Results Cost Analysis Recommendation 1. Introduction Objective Background Scope II. Soil Characteristics Background Interaction of Soil and Contaminant Metals Soil Collection Soil Analyses III. Treatment Chemical Additives In Situ Immobiliation Treatment Chemicals IV. Test Apparatus and Analytical Techniques Equipment and Operation Analytical Techniques IV. Batch Screening Test Program Plan of Approach Batch Screening Test Program Dynamic Flow Column Test Program Long-Term Stability Column Test Program Hazardous Waste Site Simulation Test Program VI. In Situ Treatment Costs VII. Conclusions and Recommendations Conclusions Recommendations VIII. References Appendix A: Batch Screening Test Data and Analysis Appendix B: Long-Term Stability Column Test Data


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© 1989
William Andrew
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