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Optical quantification of fouling during nanofiltration of dyes

机译:染料纳米过滤过程中结垢的光学定量

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摘要

Attenuated total internal reflection Fourier transform infra-red (ATR-FT-IR) spectrum analysis is done to characterize a thin film composite (TFC) nanofiltration (NF) membrane.The chemical compositions of the skin layer (composite polyamide) and the support substrate (polysulfone) are evaluated.Using a high-resolution optical microscope,the thickness of the different layers of the composite membrane is measured.The deposition and penetration of crystal violet molecules on and inside the composite membrane during nanofiltration at different operating conditions are optically measured.The deposition and penetration as a function of location on the membrane are also measured.The experimental results are found to be consistent with the basic physics of the process.
机译:进行了衰减全内反射傅立叶变换红外(ATR-FT-IR)光谱分析,以表征薄膜复合(TFC)纳滤(NF)膜。表皮层(复合聚酰胺)和支撑基材的化学成分(聚砜)。使用高分辨率光学显微镜测量复合膜不同层的厚度。在不同操作条件下纳米过滤期间,结晶紫分子在复合膜上和内部的沉积和渗透进行光学测量。还测量了在膜上的沉积和渗透与位置的关系。实验结果与该过程的基本物理原理是一致的。

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