氨化纤维素基气凝胶的制备及其对阿散酸的吸附行为研究  

Preparation of Ammoniated Cellulose Aerogel and Its Adsorption Behavior for p-Arsanilic Acid

作　　者：郑雪琴[1] 吴志浩 杨桂芳 叶晓霞[2] ZHENG Xueqin;WU Zhihao;YANG Guifang;YE Xiaoxia(School of Safety and Environment,Fujian Chuanzheng Communications College,Fuzhou,Fujian Province,350007;College of Environmental and Safety Engineering,Fuzhou University,Fuzhou,Fujian Province,350108;Fujian Key Lab of Marine Biodiversity Conservation and Sustainable Utilization,Fuzhou,Fujain Province,350108;Institute of Oceanography,Minjiang University,Fuzhou,Fujian Province,350108)

机构地区：[1]福建船政交通职业学院安全与环境学院,福建福州350007 [2]福州大学环境与安全工程学院,福建福州350108 [3]福建省海洋生物多样性保护与永续利用重点实验室,福建福州350108 [4]闽江学院海洋研究院,福建福州350108

出　　处：《中国造纸》2022年第9期26-35,共10页China Pulp & Paper

基　　金：国家自然科学基金面上项目(21577018);福建船政交通职业学院科研项目(000201000-X19108002)。

摘　　要：以纤维素为原料,利用表面氨化交联聚乙烯亚胺(PEI)制备了一种对阿散酸(p-ASA)具有高效吸附效果的功能化纤维素基气凝胶(Cell@PEI)。结果表明,三维块状的Cell@PEI具有独特的多孔结构、较大的比表面积(241.4m^(2)/g),且PEI的引入丰富了气凝胶表面的官能团,增强了Cell@PEI中的静电和氢键相互作用,促进了其对p-ASA的吸附。Cell@PEI对p-ASA的吸附符合Freundlich吸附等温模型和准二级吸附动力学模型,最大吸附量为205.6mg/g。利用NaOH溶液对Cell@PEI气凝胶进行解吸再生5次后,其对p-ASA的去除率仍在70%以上。A functionalized cellulose-based aerogel(Cell@PEI)with high adsorption efficiency for p-arsanilic acid(p-ASA)was fabricated by crosslinking surface ammoniated polyethyleneimine(PEI)with cellulose.The results showed that the three-dimensional massive Cell@PEI had a unique porous structure with a large specific surface area of 241.4 m^(2)/g.Moreover,the introduction of PEI enriched the functional groups on the surface of the aerogel,enhanced the electrostatic interaction and hydrogen bonding in Cell@PEI,promoting the adsorption towards p-ASA.The adsorption capacity of Cell@PEI was 205.6 mg/g in maximum,which was in accordance with the Freundlich adsorption isotherm model and pseudo-second-order adsorption kinetics model.In addition,the removal of p-ASA was still above 70%by Cell@PEI aerogel after desorp⁃tion and regeneration in NaOH solution for 5 times.

关 键 词：纤维素基气凝胶 聚乙烯亚胺 吸附 阿散酸 

分 类 号：TS721[轻工技术与工程—制浆造纸工程]