Effect of chicken manure and superphosphate on accelerating green waste composting and enhancing nutrient retention

Efficient green waste (GW) management through composting is essential for promoting cleaner production and fostering a green economy. However, traditional GW composting often faces challenges such as extended decomposition times, significant nitrogen losses, and low nutrient content in the final compost product. This research evaluated the effects of incorporating chicken manure (CM: 0, 15, and 30%) and superphosphate (SSP: 0, 5, and 10%) on GW composting. A control treatment without additives was included for comparison. Results demonstrated that the combination of 15% CM and 5% SSP significantly enhanced the composting process, achieving maturity and stability within just 33 days-6 days faster than the control. This treatment also extended the thermophilic phase by 8 days, increased electrical conductivity by 115%, improved organic matter decomposition by 49%, and elevated the germination index by 56%. Furthermore, the final compost showed higher nutrient levels, with total nitrogen, total phosphorus, and total potassium content exceeding the control by 92%、327%、135%, respectively. These findings highlight the synergistic effects of CM and SSP in accelerating GW composting and enhancing compost quality, offering valuable insights for the sustainable and resource-efficient management of GW.