DDT-Contaminated Soils
Summary
*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 t
Exam Brief
GS-3Researchers are using biochar to remediate DDT-contaminated soils. UPSC cares because soil pollution and remediation are key environmental concerns for sustainable agriculture and ecosystem health.
Key Facts
- DDT is a synthetic insecticide introduced in 1939.
- DDT persists in the environment for decades.
- Biochar binds DDT, reducing its uptake by soil organisms.
- Biochar helps restore fertility to DDT-contaminated lands.
Prelims — What UPSC Might Ask
- What are the characteristics of DDT that make it a persistent environmental pollutant?
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Source Article Content
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