Results of the 1998 Field Demonstration and Preliminary Implementation Guidance for Phytoremediation of Lead-Contaminated Soil at the Twin Cities Army Ammunition Plant, Arden Hills, Minnesota

摘要

This report describes the first-year (1998) results of a two-year field demonstration conducted to determine if phytoextraction is a viable and feasible technology for remediation of metals (specifically lead) in soil. The project goal was to demonstrate the effectiveness of phytoextraction techniques for removing ionic lead from contaminated soils. The report also provides preliminary implementation guidance for implementing this technology based on the 1998 field results. During the demonstration, soil acidifiers and a chelating agent were used to increase the water solubility of lead and the availability of lead to plants. The demonstration was conducted at the Twin Cities Army Ammunition Plant in Arden Hills, Minnesota. The report indicates that phytoextraction methods using corn performed near expectations; however, methods using white mustard did not meet the expected level of performance. Alternative crops to white mustard for cool season use are being considered and tested. A preliminary economic analysis indicates the technique will be economically viable.