Department of Chemical Engineering and Environmental Technology, School of Industrial Engineering (Dr. Mergelina)-University of Valladolid, Doctor Mergelina s/n, 47011 Valladolid, Spain.
Bioresour Technol. 2011 Dec;102(23):10849-54. doi: 10.1016/j.biortech.2011.09.052. Epub 2011 Sep 20.
In this study, microwave treatment is analyzed as a way to accelerate the hydrolysis in anaerobic digestion of municipal wastewater sludge. The influence of the absorbed energy, power and athermal microwave effect on organic matter solubilization and biogas production has been studied. In addition, a novel method that considers the absorbed energy in the microwave system is proposed, in order to obtain comparable experimental results. The absorbed energy is calculated from an energy balance. The highest solubilization was achieved using 0.54 kJ/ml at 1000 W, where an increment of 7.1% was observed in methane production, compared to the untreated sample. Using a higher energy value (0.83 kJ/ml), methane production further increased (to 15.4%), but solubilization decreased. No power influence was found when 0.54 kJ/ml was applied at 1000, 600 and 440 W. Microwave heating was compared to conventional heating in two different experimental setups, providing similar methane yields in all cases.
在这项研究中，分析了微波处理作为加速城市废水污泥厌氧消化中水解的一种方法。研究了吸收能、功率和非热微波效应对有机物溶解和沼气生成的影响。此外，还提出了一种考虑微波系统中吸收能的新方法，以获得可比的实验结果。吸收能是通过能量平衡计算得出的。在 1000 W 下使用 0.54 kJ/ml 时，最高的溶解率达到了 7.1%，与未处理的样品相比，甲烷产量有所增加。使用更高的能量值（0.83 kJ/ml），甲烷产量进一步增加（达到 15.4%），但溶解率下降。当在 1000、600 和 440 W 下应用 0.54 kJ/ml 时，未发现功率影响。在两种不同的实验设置中比较了微波加热和常规加热，在所有情况下都提供了相似的甲烷产量。
