There are filters for hard water and carbon pellets to sequester household chemicals.
However, though banned decades ago, poisonous substances such as PCB and dioxins are still polluting our waterways and contaminating sediments.
Digging up the earth layer is time-consuming and expensive. Fortunately NASA environmental scientists and engineers have developed a sustainable method to address the problem.
Plastic spikes are filled with a special solution and placed in the earth. The poisonous substances are attracted by the liquid solution and pass from the sediment through the spike’s membrane into its interior.
If the solution becomes saturated with poisonous substances the spikes are removed and their content destroyed in a sustainable chemical process taking place at room temperature.
