🔍 What is Rice Husk Biochar?
Rice husk biochar is a type of biochar made from rice husks, an agricultural byproduct, through high-temperature pyrolysis (typically 300–700°C). It features high porosity, high carbon content, and is rich in silica (SiO₂), offering both environmental and industrial value.
🛠️ Key Application Areas
✅ Environmental Sustainability
• Soil Amendment: Enhances water retention, aeration, stabilizes pH, and supports microbial activity.
• Water Purification: Adsorbs heavy metals and organic pollutants (e.g., dyes, pharmaceuticals).
• Air Filtration: Removes VOCs and improves air quality in indoor and industrial environments.
• Carbon Sequestration / Carbon Credits: Stable carbon structure contributes to emissions reduction and participation in carbon trading (e.g., EBC, Verra).
✅ Industrial & Material Applications
• Plastic/Rubber Filler: Enhances strength and flame resistance, serving as a green alternative to carbon black.
• Construction Materials: Improves insulation and reduces carbon footprint when used in cement and concrete.
• Energy Materials: Used to produce battery anode materials and supercapacitor carbon.
• Ceramics/Composites: Acts as a precursor for ceramics, silicon materials, and refractory bricks.
💡 Silica (SiO₂) Application Highlights
Rice husk biochar contains up to 15–20% silica, showing strong potential in the following fields:
📈 Future Prospects & Advantages
• ♻️ Resource Upcycling: Transforms rice husk waste into high-value materials
• 🌍 Supports SDGs: Aligns with goals such as climate action, sustainable agriculture, and clean water
• 💼 Cross-Sector Collaboration Potential: A promising intersection of agriculture, environment, materials, and energy