In this study, isolated strains were used to evaluate the syner-gistic effects of bacterial mixtures on bioremediation efficiency.
Atthe end of the experimental period, the bacterial mixtures werefound to be the most effective bacterial method, in comparison toindividual culture methods
Compared with single strain cultures,the bacterial mixtures showed higher growth rate, urease activ-ity, and resistance to heavy metals.
Also, we demonstrated thatthe bacterial mixtures exhibited a considerably higher heavy metalbioremediation capacity than individual cultures, which might dueto higher bacterial cell density at high levels of heavy metals.
According to the column test results, the highest bioremediationefficiencies were noted for Pb, while the lowest removal efficiencieswere detected for Cd
Bioremediation with the bacterial mixtures ofisolated strains is an effective method for heavy metal removal fromcontaminated environments.
This may prove to be a good strat-egy for developing an effective, efficient, and economic method ofheavy metal bioremediation, and the introduction of these indige-nous bacteria could be used for contaminated soil bioremediationwithout disturbing the target environment.