DDT-Contaminated Soils
Kartavya Desk Staff
Source: DTE
Context: Researchers at Sweden’s Chalmers University of Technology have introduced a groundbreaking method to address DDT-contaminated soils by integrating biochar.
About Di-chloro-di-phenyl-tri-chloro-ethane (DDT):
• What it is: DDT is a synthetic insecticide introduced in 1939, widely used to combat agricultural pests and control diseases like malaria.
• Features: Effective against a broad range of pests. Persistent in the environment, taking decades to degrade. Fat-soluble, leading to bioaccumulation in the food chain.
• Effective against a broad range of pests.
• Persistent in the environment, taking decades to degrade.
• Fat-soluble, leading to bioaccumulation in the food chain.
• Functions: Used extensively in agriculture and forestry. Played a significant role in reducing disease vectors like mosquitoes. Later found to degrade soil quality and harm ecosystems due to prolonged use.
• Used extensively in agriculture and forestry.
• Played a significant role in reducing disease vectors like mosquitoes.
• Later found to degrade soil quality and harm ecosystems due to prolonged use.
About Binding DDT-Infused Soil with Biochar:
• What it is: A method to mix biochar—a charcoal-like substance—into DDT-contaminated soil to bind the toxin, reducing its uptake by soil organisms.
• Process: Contaminated soil is mixed with biochar. Crops like pumpkins, legumes, and willows are planted to evaluate soil health. Biochar binds DDT, preventing its entry into plants and soil organisms.
• Contaminated soil is mixed with biochar.
• Crops like pumpkins, legumes, and willows are planted to evaluate soil health.
• Biochar binds DDT, preventing its entry into plants and soil organisms.
• Significance: Restores fertility to DDT-contaminated lands, making them cultivable. Reduces ecological risks by limiting DDT exposure to organisms. Economically and environmentally viable compared to conventional methods like soil removal.
• Restores fertility to DDT-contaminated lands, making them cultivable.
• Reduces ecological risks by limiting DDT exposure to organisms.
• Economically and environmentally viable compared to conventional methods like soil removal.
• Additional Benefits: Enhances soil health and long-term carbon storage. Supports climate change mitigation efforts. Enables growth of bioenergy crops, addressing renewable energy needs.
• Enhances soil health and long-term carbon storage.
• Supports climate change mitigation efforts.
• Enables growth of bioenergy crops, addressing renewable energy needs.
Insta links:
• Project-Pyrasol