Metal pollutants are particularly difficult to remediate from the soil, water and air because, unlike organic pollutants that can be degraded to harmless small molecules, toxic elements, such as lead, mercury, cadmium, copper and zinc, are immutable by biochemical reactions.
Sites like Giant, or Faro Mine in the Yukon, or Colomac Mine in the Northwest Territories are unequivocally difficult to remediate and will require decades of pricey palliative care.
As one of the most pervasive environmental problems, Hg pollution in sediment is particularly difficult to remediate because it cannot be decomposed.
"With competence, it's very difficult to remediate and provide restorative services because they don't exist," she said.
This is hard to remediate junior year in high school.
Weathered crude oil contaminated soils (COCSs), which are much more difficult to remediate than those freshly contaminated, are widespread especially at the sites of oil fields and industries.
Alba crude oil was found to be considerably more difficult to remediate than the mineral oil.
But it is much more difficult to remediate skyscrapers or communication towers -- or wind turbines, for that matter -- once they are in place.
As a result of its high reactivity, H2O2 decomposes quickly in the subsurface, which can make it difficult to remediate contaminants that are located far from the reagent injection point.
Often cocontamination of organics and inorganics in wastes makes it difficult to remediate them.
