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THE IMPLEMENTATION OF ARTIFICIAL NEURAL NETWORKS TO MODEL METHANE OXIDATION IN LANDFILL SOIL COVERS

机译:人工神经网络在填埋土壤中甲烷氧化模型模拟中的应用

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Methane is one of the primary greenhouse gases, which negatively affects climate change. Itspresence in the atmosphere has increased dramatically over the last century and continues to rise due tohuman activities. Oxidation of methane in landfill bio-covers takes place through the use ofmethanotrophic bacteria which provides a sink for methane. The rate at which methane is biologicallyoxidized depends on several parameters. This study aims to better understand the oxidation of methanein landfill soil covers through modeling methane oxidation with artificial neural networks. Modeling wasdone through laboratory batch reactor experiments, under three levels of saturation limits, three levels oftemperature, for three types of soils, with and without nutrients added. An artificial neural network wasdesigned and served as a numerical prediction tool to describe the expected methane oxidationefficiencies under different levels of applications of moisture content, under different temperatures andnutrient additions. The 3 layered feed forward artificial neural network was trained as a multilayerperceptron with 5 hidden nodes and a root mean squared error of 1.515 and an R2 of 98.6%. The modelwas verified with an error R2 of 98.3% and a root mean squared error of 1.521. Furthermore, the modeldemonstrated that it verifies closely with the experimental results reported by other researchers. Thus, themodel described methane oxidation efficiencies with high competence.
机译:甲烷是主要的温室气体之一,会对气候变化产生负面影响。它的 上个世纪以来,大气中的存在量急剧增加,并且由于 人类活动。垃圾掩埋场生物覆盖物中甲烷的氧化是通过使用 甲烷营养细菌,可为甲烷提供汇。甲烷的生物发生率 氧化取决于几个参数。这项研究旨在更好地了解甲烷的氧化 通过使用人工神经网络对甲烷氧化进行建模,可以对垃圾掩埋场中的土壤进行监测。原为 通过实验室批量反应器实验完成,在三个级别的饱和度极限下,三个级别的 温度,适用于三种土壤,添加和不添加营养。人工神经网络是 设计并用作描述预期的甲烷氧化的数值预测工具 不同水分含量,不同温度和温度下的效率 营养补充。将三层前馈人工神经网络训练为多层 带有5个隐藏节点的感知器,均方根误差为1.515,R2为98.6%。该模型 已通过误差R2为98.3%和均方根误差为1.521进行了验证。此外,模型 证明了它与其他研究人员的实验结果相吻合。就这样 该模型描述了具有高竞争力的甲烷氧化效率。

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