Biochar-based organic fertilizer is gaining popularity in sustainable agriculture due to its ability to enhance soil fertility, retain nutrients, and sequester carbon. It’s a valuable way to convert agricultural waste into a high-value soil amendment. If you’re looking to start a small or medium-scale production line, here’s how to produce biochar-based fertilizer efficiently.
Collecting Raw Materials
The process begins with collecting suitable agricultural biomass, such as rice husks, corn stalks, wheat straw, coconut shells, or even poultry litter. These materials serve as feedstock for producing biochar, a carbon-rich material obtained through pyrolysis.
Producing Biochar through Pyrolysis
The next step is pyrolysis—thermally decomposing biomass in the absence of oxygen. A continuous biochar production machine (also known as a biomass pyrolysis unit) is ideal for this purpose. It heats the raw material at 400–600°C, breaking it down into solid biochar, bio-oil, and syngas. The biochar is then cooled and collected for fertilizer blending.
Composting and Nutrient Enrichment
To produce quality biochar organic fertilizer, you’ll need to mix the biochar with composted organic materials, such as chicken manure, cow dung, or food waste. This mixture is rich in nutrients and beneficial microorganisms. Composting can be done using aerobic fermentation tanks or windrow compost turners, allowing organic waste to decompose and stabilize.
Granulation Process
Once the biochar and compost are blended, the mixture is processed through a biochar fertilizer granulation machine, such as a disc granulator or new type organic fertilizer granulator. These machines form the material into uniform granules suitable for packaging and application. More details.
Drying, Cooling, and Packaging
After granulation, the pellets are dried using a rotary dryer and then cooled and screened to ensure quality. Oversized or undersized granules are returned for reprocessing. Finally, the finished biochar-based organic fertilizer is packed for sale or use.
Conclusion
Producing biochar-based fertilizer from agricultural waste is a sustainable, circular solution that adds value to farming byproducts. With the right pyrolysis and granulation equipment, you can start a profitable and eco-friendly fertilizer production project that benefits both soil and climate. If you are need the project design, you can visit https://www.fertilizerbusinessplan.com/how-to-make-biochar-fertilizer/