改性亚麻屑纤维素对活性翠蓝染料的吸附性能研究

采用环氧氯丙烷和三乙胺对分离出来的亚麻屑纤维素进行改性,制备了一种新型吸附剂。采用扫描电子显微镜和傅里叶变换红外光谱仪分别观察了所制备的吸附剂的表面形貌并分析了主要官能团,研究了其对活性翠蓝染料的吸附性能,探讨了吸附时间、吸附剂用量、染料初始浓度及pH等对吸附的影响。结果表明,随时间延长吸附容量逐渐增加,180 min后吸附即可达到平衡,升高温度有利于吸附反应的进行,40℃时最大吸附容量为198.45 mg/g;染料初始浓度较高时,吸附容量较大,吸附受pH的影响较为明显。

Research on the adsorption of reactive turquoise blue by modified cellulose from flax shive

Flax shive cellulose was separated and modified with epichlorohydrin and triethylamine and utilized as an adsorbent for removal of the Reactive Turquoise Blue (RTB) from aqueous solutions. The morphological appearance and functional groups of the adsorbent were analyzed using SEM and FT-IR. The effects of contact time, adsorbent dose, initial dye concentration and pH values on adsorption of RTB were investigated. The results indicated that the adsorption capacity increased with increasing contact time and the equilibrium was reached after 180mins. It is beneficial for adsorption that raising temperature. The maximum adsorption capacity of modified flax shive cellulose for RTB was 198.45 mg/g. The adsorption capacity was large at high initial dye concentration. The adsorption was significantly affected by pH value of solution.