Many kinds of pollutants have been proposed, but few have been demonstrated in solving environmental challenges.
*Cadmium (Cd) is converted to immobile Cd metal.
*Chloramines are effectively reduced by ZVI.
*nitrate reduction by iron powder is observed only at pH≤4. Ammonia is the end product. Using nanoscale iron N gas is the product.
*Nitrated aromatics are reduced by bulk iron.
*Chlorinated pesticides such as DDT, DDD, and DDE. The rates of dechlorination are enhanced by the surfactant (Triton X-114).