Until now various in situ remediation technologies have been developed, and the growing experience with in situ technologies as well as ongoing research today allows many processes that occur in the subsurface to be predicted during remediation planning. This results in the application of economic remediation processes. Recent developments have considered natural limitations in a much better way than before, resulting in increased use of slower processes like the passive technologies. There is still a large potential for development of in situ technologies. Although today more efforts are made in environmental protection management, the current environmental situation shows that end-of-the-pipe technologies will still be needed for decades.


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