text: 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).