Electro-partitioning with composite ion-exchange material: an innovative in-situ heavy metal decontamination process

摘要

Selective in-situ removal of heavy metals from a contaminated soil/sludge combines the benefits of: (a) being a low risk operation since the soil/suldge is not excavated and transported, (b) being economically prduent since only the target contamiant is removed, and (c) providing the possibility of reuse/recycle of the heavy metals since they are selectively removed. However, the main problem faced in such a process is inserting a material into the soil/sludge which can selectively remove heavy metals from the backgroud of other ions which are much higher in concentration than the target heavy metals but are innocuous from a regulatory point-of-view.