Adil Mouahid , Catherine Rébufa , Yveline Le Dréau
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引用次数: 0
摘要
在 200 和 400 巴、313 和 333 开氏度、二氧化碳流量为 0.1 千克/小时的条件下，对从雷公藤果核中超临界二氧化碳萃取油进行了实验和建模研究。无论压力和温度如何，估计最高产量约为 0.7 千克石油/千克生物质。萃取动力学采用 Sovová 的破碎和完整细胞模型。核桃油在超临界二氧化碳中的表观溶解度由 Chrastil 方程确定和模拟。在 200 bar 时观察到了逆溶解行为，在 400 bar 和 333 K 时发现了更快的萃取动力学。超临界二氧化碳萃取油的脂肪酸组成与通过压榨和正己烷索氏提取法萃取的油的质量进行了比较。
Supercritical CO2 extraction of Walnut (Juglans regia L.) oil: Extraction kinetics and solubility determination
Experimental and modelling investigations of supercritical CO2 extraction of oil from Juglans regia L. kernels were conducted at 200 and 400 bar, 313 and 333 K at a CO2 flow rate of 0.1 kg/h. Regardless of the pressure and the temperature, the highest achievable yield was estimated at about 0.7 kgoil / kgbiomass. The extraction kinetics were modeled with Sovová’s broken and intact cells model. Walnut oil apparent solubility in supercritical CO2 was determined and modelled with the Chrastil equation. A retrograde solubility behaviour was observed at 200 bar, the faster extraction kinetics were found at 400 bar and 333 K. The fatty acid composition of the supercritical CO2 extracted oil was compared to the quality of the oil extracted by press and n-hexane Soxhlet extraction.
期刊介绍：
The Journal of Supercritical Fluids is an international journal devoted to the fundamental and applied aspects of supercritical fluids and processes. Its aim is to provide a focused platform for academic and industrial researchers to report their findings and to have ready access to the advances in this rapidly growing field. Its coverage is multidisciplinary and includes both basic and applied topics.
Thermodynamics and phase equilibria, reaction kinetics and rate processes, thermal and transport properties, and all topics related to processing such as separations (extraction, fractionation, purification, chromatography) nucleation and impregnation are within the scope. Accounts of specific engineering applications such as those encountered in food, fuel, natural products, minerals, pharmaceuticals and polymer industries are included. Topics related to high pressure equipment design, analytical techniques, sensors, and process control methodologies are also within the scope of the journal.
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