Abstract Batch adsorption is very important for characterization, screening and industrial applications. In this paper, a new Y-shaped absorption vessel with an incorporated membrane was designed and combined with a fiber-optic sensing spectrometer to realize in-situ automatic measurement of liquid-phase kinetics in batch adsorption. The main parameters which affect the mass transfer such as geometric sizes of the vessel and pore size of membranes were investigated. Compared with the adsorption bag and the traditional adsorption modes, the adsorption rate of the Y-shaped absorption vessel was in the first 5 hours of the adsorption of rutin on the macroporous resin by the in-situ method. Additionally, the adsorption rate of the Y-shaped adsorption vessel was closer to that of traditional adsorption. When the adsorption reached equilibrium, the equilibrium adsorption capacity of two modes were practically equal. The pseudo-second-order kinetic model accurately express the adsorption mechanism of rutin on the macroporous resin. The results show that the Y-shaped adsorption vessel improved the accuracy of the adsorption measurements and solve the problem of poor mass transfer caused by adsorption bag. This approach provides an in-situ, automatic and accurate method for batch processing and the screening of adsorbents.

中文翻译：

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基于光纤传感的 Y 型批式容器吸附动力学原位精确检测

摘要 批量吸附对于表征、筛选和工业应用非常重要。本文设计了一种新型带膜的Y形吸收容器，并结合光纤传感光谱仪实现批量吸附液相动力学的原位自动测量。研究了影响传质的主要参数，如容器的几何尺寸和膜的孔径。与吸附袋和传统吸附方式相比，Y形吸附容器的吸附速率为原位法将芦丁吸附在大孔树脂上的前5小时。此外，Y形吸附容器的吸附速率更接近传统吸附。当吸附达到平衡时，两种模式的平衡吸附容量实际上相等。拟二级动力学模型准确表达了芦丁在大孔树脂上的吸附机理。结果表明，Y形吸附容器提高了吸附测量的准确性，解决了吸附袋传质不良的问题。这种方法为批量处理和吸附剂筛选提供了一种原位、自动和准确的方法。