SOIL REMEDIATION SCENARIOS FOR HEAVY METAL CONTAMINATED SOIL

摘要

The countries of the former Eastern European Block continue to suffer from environmental contamination resulting from former economic practices, where environmental issues were not given a priority. Considerable environmental progress has already been made over the past decade, especially concerning air quality. Nevertheless, persistent pollutants in soils, particularly heavy metals still remain deposited. Current remedial technologies for soils contaminated with heavy metals involve ex situ physical and chemical methods such as, solidification, electrokinetics, soil washing, pyrometallurgical separation, excavation etc. are generally very costly and unaffordable to developing countries. For such sites introduction of different kinds of phytoremediation technologies seems to be an acceptable solution.