废革屑负载壳聚糖处理印染废水的研究  

Study on treatment of dyeing wastewater by leather waste chips-supported chitosan

作　　者：郑顺姬[1] 胡芳[1] 曹向禹[1] Zheng Shunji;Hu Fang;Cao Xiangyu(College of Light Industry and Textile,Qiqihar University,Qiqihar 161006)

机构地区：[1]齐齐哈尔大学轻工纺织学院,齐齐哈尔161006

出　　处：《化工新型材料》2025年第1期219-223,共5页New Chemical Materials

基　　金：黑龙江省省属本科高校基本科研业务费科研项目(145109122)。

摘　　要：以废革屑作为载体,通过戊二醛交联剂将壳聚糖嫁接于革屑上,制备胶原纤维基吸附材料,研究了其对酸性红A-2BF的吸附性能。分析了染料废水的pH、吸附剂用量、染料初始浓度、吸附时间对吸附性能的影响,对该吸附过程建立了适当的模型,描述了其吸附行为,对吸附机理进行了探究,用红外光谱表征了改性前后废革屑的结构。结果表明,在废液初始浓度为100mg/L,pH=4.0,吸附剂添加量为0.05g/100mL条件下吸附2.0h,吸附剂对溶液中染料的吸附率和吸附容量分别达到96.7%和188.2mg/g。该吸附过程符合拟一级动力学和Freundlich等温吸附模型,且为自发的吸热过。FT-IR分析表明,壳聚糖成功接枝到性废铬革屑,可为吸附染料提供吸附位点。Using leather waste chips as carrier,a collagen fiber-based adsorption material was prepared through loading chitosan onto leather waste chips with glutaraldehyde as cross-linking agent.The adsorption performance of the material for acidic red A-2BF was studied.The effect of the dyeing wastewater pH,adsorbent dosage,initial concentration of dyeing wastewater,and adsorption time on the adsorption performance were analyzed.An appropriate model for the adsorption process was established,its adsorption behavior was described,and the adsorption mechanism was explored.The structure of waste leather chips before and after modification was characterized by infrared spectroscopy.The results showed that the removal ratio and adsorption capacity achieved 96.7%and 188.2mg/g,respectively,after absorption for 2.0h under the conditions of an initial waste solution concentration of 100mL/L,a pH of 4.0,and an adsorbent addition of 0.05g/100mL.The adsorption process conformed to the pseudo first order kinetics and Freundlich isothermal adsorption model,and the adsorption reaction was a spontaneous endothermic process.FT-IR infrared spectroscopy analysis indicated that chitosan was successfully grafted onto chrome leather waste chips,providing adsorption sites for the adsorption of dyes.

关 键 词：废革屑 壳聚糖 废水 吸附 

分 类 号：TQ424.3[化学工程]