However, phytoremediation requires time and can only be used to remediate moderately polluted sites where plants are still able to grow.
How is it made?
The plants introduced to these contaminated sites act on several fronts:
- They remove certain contaminants from the soil and accumulate them in their aerial tissues, which can then be collected.
- They immobilize soil contaminants and prevent them from dispersing into surface and ground water.
- They break down the pollutants locked in their tissues or release them into the atmosphere.
Phytoremediation can be effective on both organic contaminants (like hydrocarbons) and inorganic contaminants (like heavy metals and fertilizer residue).