TREATMENT OF Pb – NAPHTHALENE CO – CONTAMINATION IN SOILS BY ZERO VALENT IRON NANOPARTICLES (NZVI) AND BIOREMEDIATION

The co-contamination of soils with heavy metals and organic contaminants is a problem that requires different innovative approach to remediate these kinds sites. nature two contaminant groups makes the complicated. Recently, zero-valent iron nanoparticles (nZVI) application has been integrated bioremediation be used for remediation halogenated organics. However, use this process co-contaminated not investigated. In study, nZVI approaches (bioattenuation biostimulation) was applied Pb naphthalene spiked in laboratory-scale reactors. Soil fractions concentrations were monitored 90 days. decreased mobility bioavailability significantly by reducing exchangeable carbonate bound from 66.2 % 25.8 – 37.2 range. also caused degradation range 38.8 58.5 %. Significant biodegradation occurred at samples subjected biostimulation. highest overall (76.7 %) obtained which