The effect of ultrasound pre-treatment (for 5, 15, and 30 min) on tomato pomace methane yield was evaluated. With respect to the control (238.0 m³CH₄/tVS), no improvement was recorded for the substrates pre-treated at 80 µm (0.6 W/mL). 18.9% and 5% higher methane yields were, instead, recorded from the substrate pre-treated for 15 min with an ultrasound wave’s amplitude of 152 µm (0.9 W/mL) after 4 and 22 days of AD, respectively. However, the main achievement arising from the ultrasound application at 152 µm amplitude was the degradation kinetics speed up (89.7% faster maximum methane production rate after 15 min US). Nonetheless, the methane yield increase was not high enough as to compensate the electricity requirement of ultrasonication (between 3.3 and 19.5 MJ/kgVS) as verified through the energy assessment. The dataset that has been presented and discussed lead to preliminary considerations that may be useful in view of a possible scale-up of the process. When equipoising higher quantities of treated biomass and recovered methane, the process might turn economically convenient; however a new energy feasibility assessment and capex–opex evaluation would be required.

评估了超声波预处理（5、15和30分钟）对番茄渣中甲烷产量的影响。关于控制（238.0 m ³ CH ₄/ tVS），未记录到在80 µm（0.6 W / mL）下进行预处理的底物的改善。相反，在AD处理4天和22天后，分别用152 µm（0.9 W / mL）超声波振幅预处理15分钟的底物记录的甲烷产率分别提高了18.9％和5％。但是，以152 µm的振幅施加超声波产生的主要成就是降解动力学加快（US在15分钟后的最大甲烷生成速率快了89.7％）。尽管如此，甲烷的收率提高得还不够高，不足以补偿超声处理的电力需求（介于3.3和19.5 MJ / kgVS之间），这已通过能源评估得到了证实。提出和讨论的数据集导致初步考虑，考虑到可能扩大流程规模，可能会有用。当配置更多数量的处理过的生物质和回收的甲烷时，该过程可能在经济上变得方便；但是，将需要进行新的能源可行性评估和资本支出-运营支出评估。