Novel Approaches to Bioremediation and Monitoring of Soils Contaminated by Heavy Metals and Radionuclides

Abstract

This study aims to work out a scientific base for bioremediation ofsoils contaminated by heavy metals and radionuclides and to developa biosensor method for heavy metal monitoring in the environment.Natural podzolized soil contaminated with 3 mM CuCl2.6H2O, CoCl2.6H2O,UO2(NO3)2.6H2O, Sr(NO3)2.6H2O (individual or mixed) solns. stirredfor 18 h was used. When the soil contaminated with metal mixt. wastreated with intensely grown metal-resistant bacterial culture, notonly were the heavy metals removed from the soil but the sedimentationproperties of soil suspension were also changed. As a result of theinvestigations performed, the authors propose a complex ecol. monitoringof the processes for microbiol. remediation of soils contaminatedby heavy metals and radionuclides, including: use of luminescentbacterial biosensors for heavy metal detection; microbiol. extn.(leaching) of heavy metals and radionuclides from contaminated soilunder the action of bacteria-produced metabolites with complex-formingactivity in respect to heavy metals and radionuclides. [on SciFinder(R)]