Open AccessLead immobilization in thermally remediated soils and igneous rocks
Author(s) -
D. D. Hickmott,
J. W. Carey,
James A. Stimac,
Adrienne C. L. Larocque,
Russell Abell,
E. Gauerke,
A. Eppler
Publication year - 1997
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/481516
Subject(s) - environmental remediation , soil water , galena , lead (geology) , soil remediation , chemistry , environmental chemistry , mineralogy , environmental science , geology , soil contamination , contamination , soil science , pyrite , ecology , geomorphology , sphalerite , biology
This is the final report for a three-year, Laboratory-Directed Research and Development (LDRD) project at the Los Alamos National Laboratory (LANL). The principal goal of this project was to investigate the speciation of lead in the environment at LANL and to determine the feasibility of using thermal remediation methods to immobilize lead in the environment. Lead occurs as pyromorphite [Pb(PO{sub 4}){sub 3}(Cl, OH)], cerussite (PbCO{sub 3}) and galena (PbS) in vapor-phase-altered Bandelier Tuff samples. LANL soils primarily contain cerussite and PbO. Thermal remediation experiments at high temperatures (up to 400 C) suggest that thermal immobilization of highly-reactive Pb compounds in the environment may be feasible, but that this technique is not optimal for more refractory lead phases such as cerussite and PbO
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