Patent ID: 7906315
Filing Date: 2011-03-15
Classification: B09C,C12N,C12R,G21F,Y10S

Abstract:
1. A process of treating a mixed waste of soil contaminated with a heavy metal pollutant and a petroleum pollutant comprising the steps of: providing a supply of a contaminated soil containing a heavy metal pollutant and a petroleum pollutant; introducing into said supply of contaminated soil at least one biologically pure culture of a bacterium strain selected from the group consisting of periodically removing a portion of the produced biosurfactant from said supply of soil, said biosurfactant containing therein a portion of said heavy metal pollutant and said petroleum pollutant; and, repeating said step of removing a portion of said biosurfactant until a concentration of said heavy metal pollutant and said petroleum pollutant in the soil is reduced to a target concentration of 100 ppm or less.