| 铁锰复合氧化物的制备及其吸附除砷性能 |
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| 引用本文： | 常方方,曲久辉,刘锐平,刘会娟,雷鹏举,张高生,武荣成.铁锰复合氧化物的制备及其吸附除砷性能[J].环境科学学报,2006,26(11):1769-1774. |
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| 作者姓名： | 常方方 曲久辉 刘锐平 刘会娟 雷鹏举 张高生 武荣成 |
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| 作者单位： | 1. 中国科学院生态环境研究中心环境水质学国家重点实验室,北京,100085;中国科学院研究生院,北京,100049
2. 中国科学院生态环境研究中心环境水质学国家重点实验室,北京,100085 |
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| 基金项目： | 国家自然科学基金
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国家自然科学基金 |
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| 摘 要： | 采用共沉淀法制备了新型铁锰复合氧化物吸附剂,并对其表面特性及除砷性能进行了初步研究.ξ电位测试表明,铁锰复合氧化物pHzpc在6.0附近,SEM/EDX表征证明吸附剂表面Fe和Mn的相对摩尔比为3∶1;铁锰复合氧化物对As(Ⅴ)和As(Ⅲ)均表现出很强的吸附能力,并且吸附速度快,在60min内即可达到平衡吸附容量的80%;该吸附剂在天然水环境pH范围内均有良好吸附除砷能力,磷酸根、硅酸根、碳酸根等阴离子对除砷效果有不同程度的影响,其余共存阴、阳离子及天然有机物在中性水环境中对除砷效果影响不大;采用Langmuir吸附等温线能较好地描述铁锰复合氧化物吸附As(Ⅴ)的过程(R2=0.997),而Freundlich方程能较好地拟合As(Ⅲ)的吸附过程(R2=0.989),对As(Ⅴ)与As(Ⅲ)的饱和吸附容量分别达到227mg·g-1和312 mg·g-1.
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| 关 键 词： | 铁锰复合氧化物 ξ电位 砷 吸附容量 |
| 文章编号： | 0253-2468(2006)11-1769-06 |
| 收稿时间： | 03 23 2006 12:00AM |
| 修稿时间： | 2006年3月23日 |
Preparation of Fe-Mn bimetal oxide adsorbent and its adsorption characteristics of arsenic |
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| CHANG Fangfang,QU Jiuhui,LIU Ruiping,LIU Huijuan,LEI Pengjun,ZHANG Gaosheng and WU Rongcheng.Preparation of Fe-Mn bimetal oxide adsorbent and its adsorption characteristics of arsenic[J].Acta Scientiae Circumstantiae,2006,26(11):1769-1774. |
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| Authors: | CHANG Fangfang QU Jiuhui LIU Ruiping LIU Huijuan LEI Pengjun ZHANG Gaosheng and WU Rongcheng |
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| Institution: | 1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085; 2. Graduate School of Chinese Academy of Sciences, Beijing 100049,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085,1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085; 2. Graduate School of Chinese Academy of Sciences, Beijing 100049 and State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 |
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