CESAM & Department of Chemistry, University of Aveiro, Aveiro, Portugal.
Bioresour Technol. 2011 Feb;102(3):3404-10. doi: 10.1016/j.biortech.2010.10.016. Epub 2010 Oct 12.
Anaerobic digestion of cattle manure was studied under thermophilic and mesophilic conditions with the purpose of evaluating the effect of temperature on the quality of the final digestate. Non-isothermal thermogravimetric kinetic analysis was applied for assessing organic matter conversion of biological stabilization. The mathematical approximation proves to be a useful tool for evaluating the differences attained during biological degradation. The anaerobic digestion of the organic substrate resulted in a reduction of the activation energy value obtained from the different applied kinetic models. Results obtained from thermal kinetic analysis were in accordance with those from the monitoring of the anaerobic digestion process. The higher values of methane yield reported for the mesophilic digestion in comparison to that of the thermophilic indicated a greater capability of the former process in the utilization of substrate and thus a higher conversion of organic matter which can be quantified by the activation energy value.
对牛粪进行了高温和中温厌氧消化研究，目的是评估温度对最终消化物质量的影响。采用非等温热重动力学分析方法评估生物稳定化过程中有机质的转化。数学近似证明是评估生物降解过程中差异的有用工具。有机底物的厌氧消化导致从不同应用的动力学模型获得的活化能值降低。热动力学分析得到的结果与监测厌氧消化过程得到的结果一致。与高温消化相比，中温消化产生的甲烷产量较高，这表明前者在利用底物方面具有更大的能力，从而实现了更高的有机质转化率，这可以通过活化能值来量化。
