Composting of Pig Manure and Forest Green Waste Amended with Industrial Sludge
The research paper investigates the co-composting of chestnut forest green waste (FGW) and medium-density fiberboard sludge (MDFS) with pig manure (PM) to enhance composting efficiency and produce a nutrient-rich final product. The study highlights the low biodegradation potential of both FGW and MDFS, which, when mixed, can achieve higher composting temperatures. The addition of PM effectively reduces the carbon-to-nitrogen (C/N) ratio and increases moisture content, facilitating the composting process.
The research involved four composting mixtures with varying ratios of MDFS to FGW, alongside a control mixture of food waste and FGW. The composting process lasted approximately two months, during which thermophilic and mesophilic phases were observed. The results indicated that the mixtures containing MDFS significantly reduced nitrogen losses compared to the control, with final products exhibiting high nutrient content, low salinity, and minimal heavy metal presence, making them suitable for soil fertilization.
The study also discusses the implications of using forest biomass and pig manure in sustainable agricultural practices, emphasizing the need for efficient waste management strategies in the context of circular economy principles. The final composts were characterized by their nutrient profiles, stability, and phytotoxicity, with the MDFS-amended mixtures showing promising results for agricultural applications.
This research paper is significant in the field of environmental science and sustainable agriculture as it addresses the dual challenges of managing agricultural waste and enhancing soil fertility. By exploring the co-composting of various organic materials, the research contributes to ongoing discussions about sustainable waste management practices and the circular economy. The findings offer practical insights for farmers and waste management professionals seeking to improve soil health and reduce environmental impacts associated with waste disposal. The study also highlights the potential for utilizing industrial by-products in agricultural applications, promoting resource efficiency and sustainability.
