蒋海燕;周书葵;曾光明;刘迎九;李华;欧阳双龙;

• 1:南华大学城市建设学院
• 2:湖南城市学院市政与测绘工程学院
• 3:湖南大学环境科学与工程学院

摘要(Abstract)：

以不溶性腐殖酸(Insolubilized Humic Acid,IHA)为吸附剂,去除废水中的U(VI)。通过静态吸附试验,考察了p H值、时间、U(VI)初始质量浓度和温度等对吸附的影响,分析了吸附过程的动力学、热力学及等温吸附规律,并用红外光谱(FT-IR)和扫描电镜(SEM)分析了吸附机理。结果表明:35℃下1.4 g/L的IHA在p H值为5时对10mg/L U(VI)的去除率可达99.37%;IHA对U(VI)的吸附是自发的、放热的反应,符合Freundlich等温吸附方程,决定系数达0.99以上;吸附动力学过程符合准二级吸附速率方程,决定系数为1;IHA吸附U(VI)后表面形态发生了变化,与U(VI)相互作用的基团主要是羧基和酚羟基,综合看来,IHA吸附U(VI)的机理表现为离子交换。

关键词(KeyWords)： 环境工程学;U(VI);不溶性腐殖酸;吸附动力学;吸附热力学

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51174117)

作者(Authors): 蒋海燕;周书葵;曾光明;刘迎九;李华;欧阳双龙;

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