电渗析染料脱盐

论文编号:HG170 论文字数:8183,页数:21

电渗析染料脱盐

摘要：染料的生产会伴随有一定量的盐，这些盐的存在会影响染料的使用性能和染料的原有性质，所以染料的生产会有脱盐的环节。染料的脱盐方法主要有盐析与纳滤，这些方法的脱盐率各有不同。本论文叙述了染料脱盐的方法，以电渗析的方法研究了染料的脱盐。考察染料的浓度、染料中盐的浓度、电流、pH和流量这些因素的变化对染料的脱盐影响。结果显示不同的染料浓度对脱盐的影响不大，不同的含盐量和电流对脱盐的结果也没有什么大的影响。由于染料本身有一定的电阻，所以再高的设定电流也没有实际意义，电流过小会使得脱盐的过程在开始是会有一个恒流过程。实验过程中电流的变化从一开始的大于3A开始直至不变。pH和流量的变化也只是改变了脱盐的初始速率，并不影响脱盐的最终结果。

关键词：染料；脱盐；电渗析

Abstract: Dye would be accompanied by the production of certain components of salt. The presence of these salts would affect the use of dyes and dyes performance of the original character. So dye production would be part of desalination. Dye desalination is the primary means of salt out and nanofiltration, the desalination of these methods are different. This paper describes the dye desalination methods. The dye desalination was studied with electrodialysis method. The effects of dye desalination such as the dye concentration, the different salt concentration in dye, current, pH and flow were studied. The results show that different dye concentrations was the little effect on desalination, different salinity and currents were also little effect on desalination. Because dye has a certain degree of resistance, so to set a high current is no practical significance. If the current is set too small, there will be a constant current process in the beginning of the desalination process. In the course of experiments, current changes from the beginning of more than 3 A until unchanged. Changes of pH and flow change only the desalination initial rate, affect not the final result of desalination.

Keywords： Dye; Desalination; Electrodialysis