Heavy metals and organic chemicals that stick to particles of soil could get released into the groundwater. A new procedure developed by Paul Bertsch of the University of Georgia, US, aims at removing these contaminants from the soil. His technique is based on the conventional method of 'pump and treat'.
Polluted water is pumped up, cleaned and then re-injected into the soil. Based on the fact that the contaminants bind with the iron oxide molecules present on the surface of soil particles, large positive ions are injected into the soil to induce the dissociation of oxide molecules from the soil particles.
We are a voice to you; you have been a support to us. Together we build journalism that is independent, credible and fearless. You can further help us by making a donation. This will mean a lot for our ability to bring you news, perspectives and analysis from the ground so that we can make change together.
.png)
Comments are moderated and will be published only after the site moderator’s approval. Please use a genuine email ID and provide your name. Selected comments may also be used in the ‘Letters’ section of the Down To Earth print edition.