The recalcitrant structure of Cannabis ruderalis straw (CRS) inhibits the recovery of bioenergy from its anaerobic digestion. This paper attempted to estimate the digestive performance of CRS mono-digestion and its co-digestion with blackwater (BW) by hydrothermal pretreatment at different temperature (120, 140 and 160 °C). The solubilization of CRS increased as the treatment temperature increased. The methane yield from CRS-BW co-digestion was 1.2–1.6-fold of that from CRS mono-digestion. The maximum methane yield of 278.66 mL/g VS from CRS mono-digestion was obtained at 160 °C, while from CRS-BW co-digestion, it was obtained at 120 °C (351.35 mL/g VS), indicating that BW weakened the inhibitory effects of substances produced in the hydrothermal pretreatment of CRS on subsequent digestion. Path analyses suggested that the maximum determination coefficient of the methane yield was soluble chemical oxygen demand (SCOD) for CRS mono-digestion and volatile fatty acids (VFAs) for CRS-BW co-digestion.

大麻的顽强结构稻草（CRS）抑制了厌氧消化过程中生物能的回收。本文试图通过在不同温度（120、140和160°C）下进行水热预处理来评估CRS单消化及其与黑水（BW）共消化的消化性能。随着治疗温度的升高，CRS的溶解度增加。CRS-BW共消化的甲烷产量是CRS单消化的甲烷产量的1.2-1.6倍。在160°C时，CRS单消化的最大甲烷产率为278.66 mL / g VS，而在120°C下，CRS-BW共消化的最大甲烷产率为351.35 mL / g VS，表明BW减弱CRS水热预处理中产生的物质对后续消化的抑制作用。