How to Ferment Rice Husk into a High-Quality Matrix
Rice husk composition varies significantly depending on the variety, origin, and processing method. Typically, it contains about 12% moisture, 36% carbon, 0.48% nitrogen, 0.32% phosphorus, and 0.27% potassium. Its composition is somewhat similar to rice straw, but rice husk has a much higher silica content. The carbon-to-nitrogen ratio of rice husk can be as high as 75.6%, making it one of the more challenging organic materials for fermentation. This high C:N ratio often makes it difficult for standard fermentation agents to work effectively. Therefore, it's essential to pre-treat rice husk before starting the fermentation process.
A common approach is to use urea for ammonia treatment or mix it with livestock urine to improve the nitrogen content and promote better microbial activity. This step helps balance the nutrient profile and enhances the efficiency of the fermentation process.
So, how exactly should this be done? First, prepare the materials: take approximately 1 ton of rice husk, 4 kg of urea, and 10 kg of rice bran. Next, moisten the rice husk by adding 500 kg of water per ton of material. Soak it until the moisture level reaches 60–65%. Let it sit for over 24 hours to allow proper hydration.
Then, dissolve 4 kg of urea in 50 kg of water to make a urea solution. Evenly spray this mixture onto the rice husk pile. After 12 hours, mix 2 kg of microbial fermentation agent with 10 kg of rice bran and thoroughly dilute it. Spread this mixture evenly across the rice husk heap. Ensure that the height of the pile doesn’t exceed 2 meters, and the area stays under 50 square meters. Once the pile is ready, cover it with an air-permeable tarp to maintain heat and moisture.
As the temperature rises, monitor it closely. When it reaches 65–70°C and maintains that for at least 36 hours, it’s time to turn the pile for the first time. Repeat this turning process several times until the fermentation is complete.
Throughout the entire process, the key to success lies in proper "incubation." While ensuring adequate ventilation and moisture management is crucial, the real challenge is maintaining the right conditions for microbial activity to thrive. With careful attention and consistent monitoring, you can transform rice husk into a valuable, nutrient-rich matrix suitable for composting or animal feed.
Sodium Phosphates
Sodium Phosphates,Sodium Phosphate Tribasic,Phosphate Anhydrous,Trisodium Orthophosphate
Wuxi Yangshan Biochemical Co.,Ltd. , https://www.yangshanchem.com