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以壳聚糖(CS)、碳纳米管(CNTs)和海藻酸钠(SA)为主要原料,制备了环境友好型的复合吸附材料——CS-CNTsSA,并采用SEM和FTIR技术对复合吸附材料进行表征。考察了pH值、吸附剂的用量、吸附动力学、吸附等温线等因素对其吸附废水中罗丹明B效果的影响,并对CS-CNTs-SA进行疲劳试验。实验结果表明:在室温、溶液pH值为1.0、罗丹明B的初始浓度为10×10-6 mol·L~(-1)、CS-CNTs-SA的投放量为12mg·mL~(-1)、吸附时间为24h的条件下,CS-CNTsSA吸附去除罗丹明B的效果达到最佳;Langmui和Freundlich吸附等温方程都能较好地描述CS-CNTs-SA对罗丹明B的吸附行为;CS-CNTs-SA可以多次吸附处理罗丹明B废水,且仍具有一定的吸附性能。
CS-CNTsSA was prepared with chitosan (CS), carbon nanotubes (CNTs) and sodium alginate (SA) as the main raw materials. SEM and FTIR techniques were used to characterize the composite adsorbent Characterization. The effects of pH value, adsorbent dosage, adsorption kinetics and adsorption isotherms on the adsorption of rhodamine B in wastewater were investigated. The fatigue tests of CS-CNTs-SA were carried out. The results showed that the initial pH of rhodamine B was 10 × 10-6 mol·L -1 at room temperature, the concentration of CS-CNTs-SA was 12 mg · mL -1 ) Adsorption time of 24h, CS-CNTsSA adsorbed rhodamine B to achieve the best results; Langmui and Freundlich adsorption isotherm equation can better describe the CS-CNTs-SA adsorption of rhodamine B; CS -CNTs-SA can adsorb rhodamine B wastewater multiple times and still has certain adsorption properties.