Soil washing of various forms of lead and organically contaminated soils
- West Virginia Univ., Morgantown, WV (United States). Dept. of Civil Engineering
- State Univ. of New York, Buffalo, NY (United States). Dept. of Civil Engineering
The retention and release of lead from an eastern US soil were investigated. The soil was characterized using well established test procedures and was artificially contaminated with lead. Three forms of lead contamination were studied. The soil was contaminated with the soluble salt, NaNO{sub 3}, and with two less soluble forms of lead: PbSO{sub 4} and PbCO{sub 3}. The soil was also contaminated with both PbNO{sub 3} and naphthalene to explore the possible effects of an organic substance on both the retention and release of lead from the study soil. The efficiencies of six washing solutions to remove lead from the contaminated soils were then investigated via lab-scale batch washing experiments. Unlike current soil washing practices, all particle size fractions were washed and recovered in these experiments. Hydrochloric acid and EDTA yielded lead removal efficiencies from 60--98%. The broad range in removal efficiencies obtained is largely due to the various forms of lead contamination which were examined. The experiments involving the lead nitrate in the presence of naphthalene yielded lead removals which were greater than those obtained from washes without an organic contaminant.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10184562
- Report Number(s):
- CONF-931021-1; ON: DE94019123; TRN: AHC29423%%1
- Resource Relation:
- Conference: Annual conference of the Water Environment Federation,Anaheim, CA (United States),3-7 Oct 1993; Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
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