Comparison of biochar, zeolite and their mixture amendment for aiding organic matter transformation and nitrogen conservation during pig manure composting
The research paper investigates the effects of biochar, zeolite, and their combination on the composting process of pig manure (PM) mixed with wheat straw. The study aims to assess how these amendments influence organic matter degradation, nitrogen conservation, and the overall quality of the compost produced. Four treatments were established: a control (no additives), and three treatments with 10% biochar (B), 10% zeolite (Z), and a mixture of both (B + Z).
Results showed that all amendments significantly improved organic matter degradation and reduced nitrogen loss compared to the control. The combination of biochar and zeolite (B + Z) was particularly effective, leading to the highest reductions in ammonia (NH3) and nitrogen dioxide (N2O) emissions—63.40% and 78.13%, respectively. The study also highlighted that the combined use of these additives enhanced the humification of organic matter and reduced the mobility of heavy metals in the compost.
The research emphasizes the environmental benefits of using biochar and zeolite in composting, particularly in mitigating nitrogen losses and improving compost quality. The findings suggest that the combined application of biochar and zeolite is a promising strategy for enhancing the composting process of pig manure, making it more efficient and environmentally friendly.
This research paper is significant in the field of waste management and sustainable agriculture, particularly in addressing the challenges associated with pig manure disposal. With the rapid growth of intensive pig farming in China, effective management of pig manure is crucial to prevent environmental pollution. The study contributes to ongoing discussions about sustainable composting practices by demonstrating that the use of mineral additives like biochar and zeolite can enhance composting efficiency, reduce greenhouse gas emissions, and improve the quality of the final compost product.
Readers benefit from insights into practical solutions for improving composting processes, which can lead to better nutrient management in agriculture and reduced environmental impacts. The findings may also inform future research and policy-making regarding organic waste management and sustainable agricultural practices.
