We all know that plants are really good at cleaning the air and that’s absolutely a good thing. Nowadays more and more research is looking at using plants to clean more than just the air. Recently, a researcher in Ontario has used plants to clean up pollutants in a brown field site.
â€œTraditionally, we dig up the contamination and take it to a hazardous-waste dumpsite or incineration facility, but then the soil is lost,â€ she says. â€œBut, in using phytoextraction … after we pull all the contaminants out, youâ€™ve still got this natural resource of the soil itself.â€
The composted material may still need to be disposed of as hazardous waste, but the volume of contaminated matter has been greatly reduced, says Dr. Zeeb.