In situ remediation technologies for PCB-contaminated soils
Due to the strong chemical inertness and thermal stability,polychlorinated biphenyls (PCBs) exist extensively in the environment and the soil is the final fate.There are various in situ remediation technologies for PCB-contaminated soils.Capping technology as a physical method is frequently used.The heat treating technology of microwave decomposition can slso be used for soil remediation.Chemical methods include redox technology,chemical washing means and photodegradation remediation.There are also bioremediation methods base on plants,animals and microorganisms.Each method has its advantages,disadvantages and limitations.Nowadays,in situ remediation of persistent organic pollutants is moving towards green and environmental-friendly bioremediation,combined and hybride technologies.
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