Spent coffee grounds (SCG), an agro-industrial residue produced after brewing of coffee beans contains appreciable amounts of lipids (~16 wt%). One way of valorizing SCG is to subject it to dilute acid hydrolysis for the production of sugar-rich hydrolysate and lipid-dense post-hydrolysis residue. The post-hydrolysis spent coffee grounds (PHSCG) contains substantial amounts of lipids (~26 wt%), making it necessary to gather lipid extraction kinetics and equilibrium data for process and equipment design. The effects of solvent-to-solid ratio (4–20 mL g⁻¹) and temperature (30–60 °C) on the kinetics and equilibrium of lipid extraction from PHSCG using hexane as solvent was investigated. To appropriately describe the lipid extraction system, various kinetic models were fitted, with multi-step models best representing the extraction process (R² ≥ 0.99). Regardless of extraction temperature and SSR, washing step equilibrium is reached at a very short extraction time (<10 min) and over 90% of the lipids can be extracted in at least 1 h. Extraction of lipids from PHSCG required less amount of solvent to extract and recover the same amount of lipids present in SCG saving up to 40% of the solvent required for lipid extraction from SCG.

用过的咖啡渣（SCG）是咖啡豆冲泡后产生的一种农业工业残留物，含有大量的脂质（〜16 wt％）。使SCG增值的一种方法是对其进行稀酸水解，以生产富含糖的水解产物和脂质密集的水解后残留物。水解后的废咖啡渣（PHSCG）包含大量脂质（〜26 wt％），因此有必要收集脂质提取动力学和平衡数据以进行工艺和设备设计。溶剂与固体之比（4–20 mL g ^-1）和温度（30–60°C）对以己烷为溶剂从PHSCG提取脂质的动力学和平衡进行了研究。为了适当地描述了脂质提取系统，各种动力学模型拟合，与多步模型最好代表提取处理（R ²  ≥0.99）。无论提取温度和SSR如何，在很短的提取时间（<10分钟）内都能达到洗涤步骤平衡，并且至少1小时内可以提取90％以上的脂质。从PHSCG提取脂质需要较少量的溶剂才能提取和回收SCG中存在的相同量的脂质，从而节省了多达40％的从SCG提取脂质所需的溶剂。