電滲析染料脫鹽

化工論文編號(hào):HG170  論文字?jǐn)?shù):8183,頁(yè)數(shù):

摘要：染料的生產(chǎn)會(huì)伴隨有一定量的鹽，這些鹽的存在會(huì)影響染料的使用性能和染料的原有性質(zhì)，所以染料的生產(chǎn)會(huì)有脫鹽的環(huán)節(jié)。染料的脫鹽方法主要有鹽析與納濾，這些方法的脫鹽率各有不同。本論文敘述了染料脫鹽的方法，以電滲析的方法研究了染料的脫鹽。考察染料的濃度、染料中鹽的濃度、電流、pH和流量這些因素的變化對(duì)染料的脫鹽影響。結(jié)果顯示不同的染料濃度對(duì)脫鹽的影響不大，不同的含鹽量和電流對(duì)脫鹽的結(jié)果也沒有什么大的影響。由于染料本身有一定的電阻，所以再高的設(shè)定電流也沒有實(shí)際意義，電流過小會(huì)使得脫鹽的過程在開始是會(huì)有一個(gè)恒流過程。實(shí)驗(yàn)過程中電流的變化從一開始的大于3A開始直至不變。pH和流量的變化也只是改變了脫鹽的初始速率，并不影響脫鹽的最終結(jié)果。

關(guān)鍵詞：染料；脫鹽；電滲析

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