Introduction_to_BiocharBiochar_Applications.pptx

Biochar_Applications

1. Biochar: Definition, Structure, and Production By Nguyễn Thảo

2. What is Biochar? • Biochar is a carbon-rich solid material obtained from the thermal decomposition of biomass under limited oxygen conditions. • Derived from agricultural residues, wood, and organic wastes. • Similar to charcoal but primarily used for environmental management.

3. Production Methods • Pyrolysis: Decomposition of biomass at 300–700°C without oxygen. • Gasification: Partial oxidation producing syngas and char. • Hydrothermal carbonization: Wet biomass heated under pressure to form hydrochar. • Process conditions determine yield and properties.

4. Properties of Biochar • High porosity and large surface area. • Rich in carbon and minerals (Ca, K, Mg, P). • Surface functional groups enhance adsorption capacity. • Stable structure with long-term carbon sequestration potential.

5. Applications • Soil amendment to improve fertility and water retention. • Carbon sequestration for climate change mitigation. • Waste management and nutrient recycling. • Feed additive, energy storage, and filtration media.

6. Advantages and Limitations • Advantages: renewable, sustainable, improves soil health, captures CO₂. • Limitations: inconsistent quality, high production cost, limited standardization. • Research focuses on optimization and large-scale implementation.