Multivariate optimization of uranium removal via radiation-grafted acrylonitrile/acrylamide polymers on hollow fibers with phosphonic functional group modifications

IF 1.7 3区化学 Q3 CHEMISTRY, ANALYTICAL

Journal of Radioanalytical and Nuclear Chemistry Pub Date : 2026-08-12 DOI:10.1007/s10967-026-11079-5

Ghasem Alahyarizadeh, Hadi Sarafraz, Fatemeh Maleki

引用次数: 0

Abstract

A novel polymeric adsorbent was prepared by gamma radiation-induced grafting of acrylonitrile and acrylamide onto polypropylene hollow fibers, followed by amidoximation and phosphonic acid functionalization. The adsorbent was characterized by FTIR, SEM, and TGA. Response surface methodology (CCD) optimized uranium adsorption: pH 4.9, 22.6 mg L⁻¹ U, 127 min, achieving 99% removal and adsorption capacity > 180 mg g⁻¹. Kinetics followed pseudo-second-order (R² = 0.999), and isotherms fitted Langmuir model. The phosphonic group enhanced selectivity and reusability (stable over 4 cycles). The adsorbent shows promise for uranium recovery from aqueous solutions.

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含磷官能团改性中空纤维辐射接枝丙烯腈/丙烯酰胺聚合物除铀的多元优化研究

采用γ射线接枝法将丙烯腈和丙烯酰胺接枝到聚丙烯中空纤维上，经氨基肟化和膦酸功能化反应制备了一种新型高分子吸附剂。采用红外光谱（FTIR）、扫描电镜（SEM）和热重分析仪（TGA）对吸附剂进行了表征。响应面法（CCD）优化铀吸附：pH 4.9, 22.6 mg L−1 U, 127 min，去除率达到99%，吸附量为180 mg g−1。动力学服从拟二阶（R2 = 0.999），等温线符合Langmuir模型。膦基团增强了选择性和可重复使用性（在4个循环内稳定）。该吸附剂有望从水溶液中回收铀。

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来源期刊

Journal of Radioanalytical and Nuclear Chemistry 化学-分析化学

CiteScore

2.80

自引率

18.80%

发文量

504

审稿时长

2.2 months

期刊介绍： An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.