腈纶纤维负载氢氧化镧吸附剂的制备及其水体除磷性能研究  

Preparation of polyacrylonitrile fiber-supported lanthanum hydroxide adsorbents and its phosphorus removal performance in water

作　　者：张紫筠 张宇[1] 郗蕊 杜思倩 宋登鹏 ZHANG Ziyun;ZHANG Yu;XI Rui;DU Siqian;SONG Dengpeng(State Key Laboratory of New Textile Materials and Advanced Processing Technologies,Wuhan Textile University,Wuhan 430073,China)

机构地区：[1]武汉纺织大学省部共建纺织新材料与先进加工技术国家重点实验室,武汉430073

出　　处：《纺织工程学报》2024年第6期23-32,共10页JOURNAL OF ADVANCED TEXTILE ENGINEERING

基　　金：国家自然科学基金青年基金项目(22201224);武汉市科技局应用基础前沿项目(2022023988065206)。

摘　　要：腈纶纤维表面的氰基具备较高的反应活性,可通过化学改性赋予纤维新功能,拓展其在非服用领域的应用。通过三乙烯四胺对腈纶纤维进行胺化改性,并在其表面负载氢氧化镧,制备出一种高效的磷吸附纤维。实验结果表明:该纤维在水溶液中对磷酸根离子表现出优异的吸附能力,其最大吸附容量可达60.13 mg/g,远高于已报道的纤维基吸附剂。此外,该材料可在30分钟内达到吸附平衡,显示出快速的吸附动力学特征。再生实验显示:该吸附剂在经过5次氢氧化钠溶液再生循环后仍保持59%的初始吸附容量,表明其具备良好的再生和重复使用性能。此外,由于纤维柔性与可编织性的特征,这种腈纶纤维吸附剂可编织成多种形状,以适应多样化的实际应用场景,为富营养化水体中磷的高效去除提供了新的解决方案。The cyanogroup on the surface of polyacrylonitrile(PAN)fibers exhibit high reactivity,and can be chemically modified to give the fiber new functions and expand their applications beyond the textile industry.PAN fibers were aminated with triethylenetetramine and subsequently loaded with lanthanum hydroxide to develop an efficient phosphorus adsorbent.The modified fibers demonstrated excellent adsorption performance for phosphate ions in aqueous solutions,achieving a maximum adsorption capacity of 60.13 mg/g according to the Langmuir model,which significantly exceeds that of previously reported fiber-based adsorbents.Additionally,the material reached adsorption equilibrium within 30 minutes,indicating rapid adsorption kinetics.Regeneration experiments revealed that the adsorbent retained 59%of its initial capacity after five cycles of regeneration with sodium hydroxide solution,underscoring its good regenerability and reusability.Moreover,the flexibility and weavability of these fibers enable them to be fashioned into various shapes to accommodate diverse application scenarios,providing an effective solution for the efficient removal of phosphorus from water bodies.

关 键 词：腈纶纤维 氢氧化镧 磷酸根 吸附 可循环利用。 

分 类 号：TS102.5[轻工技术与工程—纺织工程]