Moreover, it has been studied in environment treatment. ODA et al [19] found that P. lilacinus D218 excreted PHB (3-hydroxybutyrate) and PCL (polycaprolactone) depolymerases to degraded PHB and PCL. P. lilacinus as biphenyl oxidizing organisms can oxidize chlorinated biphenyl derivatives [20]. But there are few reports about P. lilacinus used in heavy metals removal. It is maybe the first report about heavy metal removal by P. lilacinus.