一种多氨基改性棉纤维吸附性能研究

Adsorption Property Study on a Multi-amino-modified Cotton Fiber

研究一种多氨基改性棉纤维吸附材料的吸附效果和吸附机理。将多氨基超支化聚合物接枝到棉纤维上,制备了一种多氨基改性棉纤维吸附材料,探索其对铜离子的吸附性能、吸附机理及最佳吸附条件和最大吸附能力。结果表明:当溶液的pH值为5.0时,多氨基改性棉纤维对铜离子的吸附能力最强,吸附量最大;当溶液中铜离子的初始浓度为87.26mg/L时,吸附量可达17.325 5mg/g。认为:与普通棉纤维及氧化棉纤维相比,多氨基改性棉纤维对铜离子的吸附能力有了很大提高,其对铜离子的吸附属于化学吸附为主的反应过程。

Adsorption effect and adsorption mechanism of a multi-amino-modified cotton fiber absorbing ma- terial were studied. The multi-amino-hyperbranched polymer was grafted on cotton fiber. The multi-amino-modi- fied cotton fiber absorbing material was prepared. Adsorption property, adsorption mechanism, the optimal ad- sorption condition and the largest adsorption ability of cupric ion were explored. The results show that the adsorp- tion property and adsorption capacity of multi-amino-modified cotton fiber is the best at a pH level of 5.0. The adsorption capacity is up to 17. 325 5 mg/g, when the initial concentration of cupric ion in solution is 87.26 mg/L. It is considered that compared with cotton fiber and oxidative cotton fiber,adsorption capacity of the multi-amino-modified cotton fiber for cupric ion has been greatly improved. The adsorption of multi-amino-modi- fied cotton fiber for cupric ion is chemical reactions.