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Bioremediation is the overall process developed to clean the environment using biological organisms, especially microorganisms. It could be defined as the process when pollutants are biologically degraded or transformed to other forms under controlled conditions. I. Characterization of uranium contaminated soils and wastes Soil samples contaminated with uranium from the Fernald site in Ohio, uranium and technetium from RMI site, Ahstabula, Ohio, and uranium-contaminated sediment and sludge samples from the West End Treatment Facility, at the U.S. Department of Energy, Oak Ridge Y- Bioremediation provides nature-based solutions to overcome soil contamination thanks to the activities of microorganisms and plants New integrated multidisciplinary approaches can help to overcome limitations of bioremediation and face the future challenges to protect soil functionality and biodiversity Thank you for your attention Bioremediation can be used in any soil type with adequate moisture content, although it is difficult to supply oxygen and nutrients into low permeability soils. It should be noted that very high concentrations of the contaminants may be toxic to microorganisms and thus may not be treated by bioremediation. remediation of contaminated soils •Cost of treating contaminated soil in place $80-$100 per ton •Cost of excavating and trucking contaminated soil off for incineration is $400 per ton. •Over 90% of the chemical substances classified as hazardous today can be biodegraded. S: Pearson education Contaminants Potentially Amenable to Bioremediation Bioremediation is a biological mechanism of recycling wastes in to another form that can used and reused by other organisms. Nowadays, the world is facing the problem of different environmental pollution. Microorganisms are essential for a key alternative solution to overcome challenges. Microorganisms are ery of salt-affected soils by directly supporting the establishment and growth of vegetation in soils stressed with salts. The biotic approach ("plant-microbe interaction") for overcoming salinity/sodic - ity problems has recently received considerable attention throughout the world. Bacteria are most commonly used in the bioremediation of The textile dye waste produced during its processing contaminates water and soil. Dye pollution in soil adversely affects agricultural productivity. The dye waste contains inorganic and organic contaminants that cause hazard to the environment. Textile dyes discharged during its processing belong to many classes such as reactive, acid, and direct. a case study conducted on pentachlorophenol in new mexico identified the following main factors influencing the outcome of bioremediation of organic compound-polluted soil: (1) pesticide bioavailability, (2) rate of microbial uptake, (3) rate of enzymatic degradation, and (4) rate of cell growth using the pesticide as carbon and energy source [ … In this paper, we optimize nutrients addition in a joint bioestimulation and bio-augmentation approach to cleanup soil contaminated with crude oil, observing the efficiency of a biosurfactant produc