Accurate blank corrections for zero length column experiments

Accurate blank corrections for zero length column experiments
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零长度柱实验的准确空白校正

DOI:
10.1007/s10450-020-00281-w
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发表时间:
2020
期刊:
影响因子:
3.3
通讯作者:
Verbraeken M
Verbraeken M
中科院分区:
工程技术4区
文献类型:
--
作者:
Verbraeken M

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在这项研究中,我们提出了一种校正实验零长度柱数据的新方法,以解释柱外体积和检测器对测量信号的贡献。该方法将实验设置视为一系列具有扩散袋的混合体积,其对总体测量信号的贡献可以通过简单的模型函数准确描述。随后通过卷积方法描述各个贡献的综合效应。结果表明,模型参数与设置组件的物理特性密切相关,因此它们在一系列工艺条件下仍然有效。该方法首先通过拟合不存在吸附剂的实验进行验证。反卷积的逆过程又可以应用于吸附剂的实验数据,以产生校正的数据,可以使用平衡和动力学分析的标准工具轻松地对这些数据进行建模。最后提出了许多案例研究,举例说明了应用精确空白校正的效果,并演示了在非线性吸附系统中的应用。
In this study we present a new methodology for correcting experimental Zero Length Column data, to account for contributions to the measured signal arising from extra-column volumes and the detector. The methodology considers the experimental setup as a series of mixing volumes with diffusive pockets whose contributions to the overall measured signal can be accurately described by simple model functions. The composite effect of the individual contributions is subsequently described through the method of convolution. It is shown that the model parameters are closely related to the physical characteristics of the setup components and as such they remain valid over a range of process conditions. The methodology is firstly validated through fitting to experimental experiments without adsorbent present. The inverse procedure of deconvolution can in turn be applied to experimental datawithadsorbent, to yield corrected data which can readily be modelled using standard tools for equilibrium and kinetic analysis. A number of case studies is finally presented exemplifying the effect of applying accurate blank corrections, demonstrating also the application to a nonlinear adsorption system.
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