新型离子交换纤维去除水中砷酸根离子的研究

被引:38
作者
刘瑞霞
王亚雄
汤鸿霄
机构
[1] 中国科学院生态环境研究中心环境水化学国家重点实验室,中国科学院生态环境研究中心环境水化学国家重点实验室,中国科学院生态环境研究中心环境水化学国家重点实验室北京,北京,北京
关键词
新型离子交换纤维; 砷; 吸附; 脱附; 去除;
D O I
10.13227/j.hjkx.2002.05.018
中图分类号
X703.1 [技术方法];
学科分类号
摘要
制备了一种新型离子交换纤维 .研究表明 ,该离子交换纤维对砷酸根离子具有较高的吸附容量和较快的吸附速度 ,吸附动力学数据完全符合Lagergren二级速度方程 ,在所研究的砷浓度范围内 ,Freundlich型吸附等温式能很好地描述吸附平衡数据 ,去除砷酸根离子的最佳 pH值范围是 3 5~ 7 0 .离子交换纤维柱吸附实验表明了较好的动态吸附特性 ,稀NaOH溶液是砷酸根离子的有效洗脱剂 ,3 0mL 0 5mol/LNaOH溶液可定量将 96 0mg/g吸附量的砷从纤维柱上洗脱
引用
收藏
页码:88 / 91
页数:4
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