Biogeochemical barriers for soil and groundwater bioremediation

Resumo

Artificial biogeochemical barriers are created for the remediation of soils and groundwater. Redoxsensitive pollutants are removed using redox barriers based on the addition of electron donors or acceptors to the pollution zone. Electron donors are used for the fixation of uranium and sulfides of heavy metal and the denitrification of nitrates; electron acceptors are used for the fixation of arsenic and the destruction of aromatic hydrocarbons. Nanoparticles of mineral reagents can be toxic with respect to some species of soil biota.