Investigating the efficiency of co-composting and vermicomposting of vinasse with the mixture of cow manure wastes, bagasse, and natural zeolite
The research paper explores the co-composting and vermicomposting processes involving vinasse, a liquid waste from ethanol production, combined with cow manure and bagasse, an agricultural byproduct. The study aims to assess the efficiency of these processes in producing a stable and nutrient-rich fertilizer. The research was conducted over 60 days, utilizing the earthworm species Eisenia fetida to enhance the composting process.
Key findings include a decrease in the carbon-to-nitrogen (C/N) ratio, indicating improved compost maturity, and a final pH in the alkaline range (8.1–8.4). The total potassium content decreased during the process, while total phosphorus increased, suggesting effective nutrient transformation. The germination index (GI) for all samples was 100%, and the cellular respiration maturity index was below 2 mg C-CO2 g⁻¹ organic carbon day⁻¹, indicating a stable compost product.
The study highlights the environmental challenges posed by vinasse, which, if improperly managed, can lead to significant ecological issues. Traditional treatment methods for vinasse are often inefficient and costly, prompting the need for alternative solutions like composting. The integration of natural zeolite in the process was found to reduce salinity, enhancing the quality of the final compost product. The results suggest that the co-composting and vermicomposting of vinasse with cow manure and bagasse can yield a valuable soil amendment, contributing to sustainable waste management practices.
This research paper is significant in the field of waste management and environmental sustainability, particularly in the context of agricultural waste treatment. It contributes to ongoing discussions about innovative methods for managing agro-industrial waste, specifically vinasse, which poses serious environmental risks. By demonstrating the effectiveness of co-composting and vermicomposting, the study provides a practical solution for converting waste into a beneficial product, thus promoting circular economy principles. The findings are beneficial for researchers, environmental engineers, and agricultural practitioners seeking sustainable waste management strategies.
