The various embodiments of the present disclosure relate generally to bacterial biomineralization of contaminants and, more particularly, to methods, systems and compositions for the biomineralization of soil and water contaminants, such as metals and radionuclides. In one aspect of the present invention, a method for the in situ biomineralization of a soil contaminant comprises: providing a plurality of bacteria to a soil comprising at least one contaminant, wherein at least one bacterium expresses a phosphatase; providing a phosphate-rich material to the soil; reacting at least one bacterium expressing a phosphatase with the phosphate-rich material in the presence of the contaminant; and immobilizing the contaminant in the soil.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH
 This invention was made with U.S. Government support under Grant No. DE-FG02-04ER63906 awarded by the Department of Energy. The U.S. Government has certain rights in the invention.