FAS Abstracts 2004 Meeting Page

Environmental Chemistry & Chemical Sciences B & Poster (ENV): ENV-15

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Use of emulsified zero valent iron for in situ heavy metal contaminant removal.  K.M. MILUM (1), C.L. GEIGER (1), C.A. CLAUSEN (1), R. DEVOR (1), J. QUINN (2). (1) Dept. of Chem, Univ. of Central Fla, Orlando, FL, 32816, (2) Kennedy Space Center, FL 32899.  The use of zero-valent iron (Fe⁰) is an in situ remediation technique currently undergoing evaluation.  We have attempted to demonstrate the application of the combination of this technology with that of emulsion liquid membranes, emulsified zero-valent iron (EZVI), to treat sediments with heavy metal contamination. Emulsions were prepared using vegetable oil, water, 3-10 micron iron, and Span 85. The results presented in this study demonstrate that EZVI is viable technique for in situ remediation of heavy metals in sediments.  Laboratory studies have shown that EZVI is capable of removing heavy metals such as lead, chromium, and cadmium from aqueous solution and removal of lead and cadmium from soil at levels as high as 57% after three weeks.