A mixture of supermarket food waste from bakery, butchery, cooked meats and cheese, fishmonger, fruit, and vegetable sections was subjected to anaerobic digestion under thermophilic conditions (55 °C). Lab-scale induced bed reactors (IBR) and completely stirred tank reactors (CSTR) were operated at different organic loading rates (OLR), i.e., 3.0, 3.6 and 4.6 kg volatile solids (VS) per m³ of reactor and day.

Regardless of the type of reactor, an OLR of 3.6 kg VS/m³·day was found to be the optimum, achieving up to 48.1% more methane production per kg of treated waste than for the other OLRs tested. In general, there were no statistically significant differences (p-value < 0.05) between IBR and CSTR performance at the same OLR tested. However, for the optimum OLR, the IBR achieved a mean methane production of 1.5 L CH₄/L_reactor·day (426.7 L CH₄/kg VS) and the highest VS removal (89.0%, on average). This reactor obtained 22.1% more CH₄ yield than the analogous CSTR and the highest methane content in the biogas (66.9% CH₄).

Finally, the process was successfully tested under large-scale conditions (1.25 m³ IBR pilot-plant). The CH₄ production and the biodegradation yield were in line with those obtained in the lab-scale IBR.

将来自面包店，屠宰场，熟肉和奶酪，鱼贩，水果和蔬菜切片的超级市场食物废料的混合物在高温条件下（55°C）进行厌氧消化。实验室规模的诱导床反应器（IBR）和完全搅拌釜反应器（CSTR）在不同的有机负荷率（OLR）下运行，即每m ³反应器和每天3.0、3.6和4.6 kg挥发性固体（VS）。

无论反应器的类型如何，均发现最佳的OLR为3.6 kg V​​S / m ³ ·天，与其他测试的OLR相比，每千克处理过的废物产生的甲烷产量最多可提高48.1％。通常，在相同的OLR测试下，IBR和CSTR性能之间没有统计学上的显着差异（p值<0.05）。但是，对于最佳的OLR，IBR的平均甲烷产量为1.5 L CH ₄ / L_反应器·天（426.7 L CH ₄ / kg V​​S）和最高的VS去除率（平均89.0％）。该反应器的CH ₄收率比类似的CSTR高22.1％，沼气中的甲烷含量最高（66.9％CH ₄）。

最后，在大规模条件下（1.25 m ³ IBR中试装置）成功测试了该过程。CH _4的产生和生物降解的产率与实验室规模的IBR获得的结果一致。