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脱脂棉和环氧氯丙烷反应，生成３－氯－２－羟基丙基纤维素醚，其被乙二胺胺化可得到３－乙二胺基－２－羟基丙基纤维素醚──一种阴离子交换纤维。本文叙述了其对铬（Ⅵ）的动态吸附性能。在溶液ｐＨ值为３～６时，该交换纤维对铬（Ⅵ）的吸附效果最佳；吸附过程在５ｍｉｎ之内可基本达到平衡状态；当流速在５～１５ｍＬ／ｍｉｎ范围内时，吸附率没有大的变化；交换纤维对铬（Ⅵ）的最大吸附量随溶液浓度的增加而增加。用０．２ｍｏｌ／Ｌ的氢氧化钠溶液做为洗脱液，在洗脱速度为４ｍＬ／ｍｉｎ时，用８ｍＬ可将铬（Ⅵ）完全洗脱。
The absorbent cotton and epichlorohydrin react to form 3-chloro-2-hydroxypropyl cellulose ether, which is aminated with ethylenediamine to give 3-ethylenediamino-2-hydroxypropyl cellulose ether Anion exchange fiber. This paper describes its dynamic adsorption of chromium (Ⅵ). The adsorption of chrome (Ⅵ) was best when the solution pH was 3 ~ 6. The adsorption process could reach the equilibrium within 5min. When the flow rate was in the range of 5 ~ 15mL / min, the adsorption rate There is no big change. The maximum adsorption capacity of Cr (Ⅵ) by exchange fiber increases with the increase of solution concentration. With 0.2mol / L sodium hydroxide solution as eluent, the elution rate of 4mL / min, with 8mL chromium (VI) can be completely elution.