In comparison to fats, oils and grease (FOG) found in commercial and industrial effluents, very little is known about FOG discharged at household level. To address this shortcoming, household FOG production was calculated following a year-long monthly collection at 2.3 kg/year per household, equivalent to 0.8 kg/year per capita. In the United Kingdom, these numbers translate in an annual estimated FOG production of 62 380 tonnes. Physico-chemical characterization of household FOG showed promising results for biodiesel production. Biomethane yield was measured at 875 mL CH4/g VSadded, twice as much that of sewage sludge, making it a desirable substrate for anaerobic digestion. It was thus estimated that energy recovery from household FOG through anaerobic co-digestion or biodiesel production could generate about 490 GWh/year in the United Kingdom. However, insights from participants revealed that most of this waste is currently not recovered, requiring the development of schemes fitting with households' routine to maximize collection rates.

中文翻译：

---

家庭脂肪、油和油脂废物的能源潜力

与商业和工业废水中发现的脂肪、油和油脂 (FOG) 相比，人们对家庭排放的 FOG 知之甚少。为了解决这个缺点，家庭 FOG 产量是按照每户每年 2.3 公斤，相当于人均 0.8 公斤/年的为期一年的每月收集来计算的。在英国，这些数字转化为每年 62 380 吨的 FOG 估计产量。家用 FOG 的物理化学表征显示出对生物柴油生产有希望的结果。生物甲烷产量测量为 875 mL CH4/g VS added，是污水污泥的两倍，使其成为厌氧消化的理想底物。据估计，在英国，通过厌氧共消化或生物柴油生产从家庭 FOG 中回收能量可产生约 490 GWh/年。