Remediating DDT-contaminated Soils

Published on 31 Aug 2025

• Researchers have tested a method to reduce DDT (dichlorodiphenyltrichloroethane) contamination in soil using biochar.

• Biochar binds DDT, preventing its uptake by soil organisms. reducing toxicity and bioaccumulation risks.

• Biochar is a charcoal like material made from organic waste that's been partially burned in a limited amount of oxygen (pyrolysis). 

• It's used as a soil amendment to improve plant health and store carbon.

• It is highly porous, lightweight, with ~70% carbon, plus nitrogen, hydrogen, and oxygen among others.

• DDT is linked to cancer, reproductive issues, and neurological problems.

• The Stockholm Convention on Persistent Organic Pollutants banned the use of DDT for agricultural purposes worldwide in 2001. 

• India banned DDT for agriculture in 1972.

• However, DDT is still permitted in small quantities for malaria disease vector control in countries that need it. 

Keywords:

Remediating DDT-contaminated Soils