Investigation and Mathematical Modelling of Anaerobic Biofermentation of Dairy Cattle Manure: Influence of Addition of Citrus Peel Waste and Lycoperdon Perlatum Spores

IOP Conference Series: Earth and Environmental Science Pub Date : 2024-07-31 DOI:10.1088/1755-1315/1380/1/012005

Anelia I. Tzanova, Kiril A. Koparanov, Elena V. Antonova, Daniela V. Minkovska, Svetlin Antonov and Bozhidar I. Stefanov

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Abstract

The production of biogas from organic and carbon-neutral sources through biomethanization is essential for achieving the goals of the circular economy and reducing carbon emissions. Crucial for the optimal efficiency of anaerobic biofermentation processes is the influence of organic substrate and the application of methanogenesis enhancement additives. This study explores the possibilities of using a substrate of citrus biomass (waste peelings) for methane production from dairy cattle manure, as well as the influence of an addition of puffball mushroom (Lycoperdon perlatum) spores on the process. Experimental data obtained over a period of 31 days were mathematically modelled using a Verhulst logistic growth model to forecast their future development. The results indicate an inhibitory effect of citrus biomass on methanogenesis processes with a 20% lower yield, but a positive effect of Lycoperdon perlatum spores with nearly double the amount of biogas produced and higher methane content.

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奶牛粪便厌氧生物发酵的研究与数学模型：添加柑橘皮废弃物和枸杞孢子的影响

通过生物甲烷化利用有机和碳中性资源生产沼气，对于实现循环经济目标和减少碳排放至关重要。要使厌氧生物发酵过程达到最佳效率，关键在于有机基质的影响和甲烷生成强化添加剂的应用。本研究探讨了使用柑橘生物质（废果皮）基质从奶牛粪便中产生甲烷的可能性，以及添加浮球菌（Lycoperdon perlatum）孢子对该过程的影响。使用 Verhulst logistic 生长模型对 31 天内获得的实验数据进行了数学建模，以预测其未来的发展。结果表明，柑橘类生物质对甲烷生成过程有抑制作用，产量降低了 20%，而球盖菇孢子则有积极作用，产生的沼气量增加了近一倍，甲烷含量也更高。

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IOP Conference Series: Earth and Environmental Science

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