Assessment of Polluted Soil Remediation Using Bacterial Community Tolerance to Heavy Metals as an Indicator

The assessment of remediation on metal-polluted soils is usually focused total and/or bioavailable metal content. However, these chemical variables do not provide direct information about reductions in heavy metals pressure soil microorganisms. We propose the use bacterial communities to evaluate efficiency three techniques: crushed mussel shell (CMS) and pine bark (PB) as amendments EDTA-washing. A sample was polluted with different doses Cu, Ni, Zn (separately). After 30 days incubation, techniques were applied, community tolerance determined. If develop tolerance, it an indicator that exerting toxicity them. Soil developed response additions. remediation, showed decreases for all techniques. For Cu EDTA-washing greatest reduction respectively, while amendment PB most effective technique. Thus, successfully detect differences effectiveness