Department of Biosystems Engineering, Faculty of Agriculture, Ilam University, Ilam, Iran.
Department of Animal Science, Faculty of Agriculture, Ferdowsi University of Mashhad, PO Box 91775-1163, Mashhad, Iran.
Environ Sci Pollut Res Int. 2024 Jul;31(35):48784-48794. doi: 10.1007/s11356-024-34224-7. Epub 2024 Jul 7.
Biomass energy is a type of renewable energy and animal waste is one of the main resources for its production. The purpose of this study is to investigate the effect of raw material type (cow and chicken manure) and the type of reactor (digester) on the biogas produced by measuring the amount of methane in the product. Three types of digester (metal, simple PVC, and PVC with leachate rotation) with the same volume (10 L) were prepared. Equipment was installed on the digesters to measure the pH and volume of produced gas. The experiments were carried out in controlled temperature conditions (28-30 °C) and in two stages. The first experiment was to load the digesters with cow excrement, and the second experiment was to load the digesters with chicken excrement. In both experiments, the digesters were fed with 1.5 kg of animal manure and water with a ratio of 1:1. During a period of 60 days, the volume of biogas and methane produced was measured and recorded. The results showed that the amount of biogas produced from chicken waste is more than the amount obtained from cow waste. However, the amount of methane produced using cow excrement was more than that of chicken excrement. Also, the performance of PVC digester with leachate rotation was better than the other two digesters, which could be due to the mixing of raw materials in this type of digester.
生物质能是一种可再生能源，动物粪便是其生产的主要原料之一。本研究旨在通过测量产品中甲烷的含量，研究原料类型（牛粪和鸡粪）和反应器类型（发酵罐）对沼气产量的影响。准备了三种相同体积（10 升）的发酵罐（金属、简单 PVC 和带渗滤液旋转的 PVC）。在发酵罐上安装了设备来测量产生的气体的 pH 值和体积。实验在受控温度条件（28-30°C）下分两个阶段进行。第一个实验是用牛粪填充发酵罐，第二个实验是用鸡粪填充发酵罐。在两个实验中，发酵罐都以 1:1 的比例用 1.5 公斤动物粪便和水进行进料。在 60 天的时间里，测量并记录了沼气和甲烷的产生量。结果表明，鸡粪产生的沼气量多于牛粪产生的沼气量。然而，用牛粪产生的甲烷量多于鸡粪产生的甲烷量。此外，带渗滤液旋转的 PVC 发酵罐的性能优于另外两种发酵罐，这可能是由于这种发酵罐中原料的混合。
