Quick Answer
Temperature for thermophilic composting of humanure is between 131°F (55°C) and 140°F (60°C), with optimal temperatures between 134°F (56.7°C) and 137°F (58°C).
Understanding Thermophilic Composting
Thermophilic composting is a process that requires high temperatures to break down organic matter efficiently. For humanure composting, temperatures above 131°F (55°C) are necessary to eliminate pathogens and weed seeds. The ideal temperature range for thermophilic composting of humanure is between 134°F (56.7°C) and 137°F (58°C).
Monitoring Temperature
To achieve the optimal temperature range, it’s essential to monitor the compost pile regularly. Check the temperature using a compost thermometer, ideally at 12:00 pm when the pile is at its warmest. If the temperature doesn’t reach 131°F (55°C) within 24-48 hours after adding bulking agents and mixing the pile, it may be due to inadequate aeration, excessive moisture, or insufficient carbon-to-nitrogen ratio.
Maintaining Optimal Conditions
Maintaining optimal temperature conditions involves adequate aeration, moisture control, and regular mixing. Ensure the compost pile is 3-4 feet tall and has adequate space for air to circulate. Monitor the moisture level and maintain it between 40-60% by adding water or bulking agents as needed. Regular mixing helps to maintain aerobic conditions and prevent temperature fluctuations. It’s also crucial to maintain a carbon-to-nitrogen ratio of 20:1 to 30:1 to support the thermophilic process.
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