| 凹凸棒土负载纳米Fe/Ni的制备及其去除水中Zn(Ⅱ)性能研究 |
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| 引用本文： | 刘红,龚璇,范先媛,张家源,冯涛. 凹凸棒土负载纳米Fe/Ni的制备及其去除水中Zn(Ⅱ)性能研究[J]. 武汉科技大学学报, 2018, 41(5): 370-375 |
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| 作者姓名： | 刘红 龚璇 范先媛 张家源 冯涛 |
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| 作者单位： | 武汉科技大学资源与环境工程学院;武汉科技大学冶金矿产资源高效利用与造块湖北省重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(50904047)；湖北省环保厅科研资助项目(2017HB08). |
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| 摘 要： | 采用液相还原法制备以凹凸棒土为载体的纳米双金属Fe/Ni复合材料,通过Zn(Ⅱ)静态吸附试验,确定了除Zn(Ⅱ)效果最佳的Fe/Ni@ATP复合材料,即纳米铁与凹凸棒土的负载比为1∶2、Fe/Ni双金属中Ni掺杂比为2%,并考察了Zn(Ⅱ)初始浓度、pH及环境温度对该复合材料去除水中Zn(Ⅱ)效果的影响。结果表明,经过凹凸棒土负载和掺杂Ni改性以后,Fe/Ni@ATP复合材料的Zn(Ⅱ)去除率显著提高,颗粒团聚状况得到改善,比表面积明显增加。在实验条件范围内,较高的溶液pH值、环境温度以及较低的Zn(Ⅱ)初始浓度均有利于Fe/Ni@ATP复合材料对Zn(Ⅱ)的去除。该过程符合Langmuir吸附等温模型,吸附机理为零价铁表面氧化物与Zn(Ⅱ)的配合作用,此外,水中Zn(Ⅱ)也可以通过生成Zn(OH)_2沉淀的形式去除。
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| 关 键 词： | 纳米零价铁 Fe/Ni 凹凸棒土 Zn(II) 吸附 |
| 收稿时间： | 2018-03-29 |
Preparation of nanoscale Fe/Ni@attapulgite composite and its adsoption property for Zn(II) from aqueous solution |
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| Liu Hong,Gong Xuan,Fan Xianyuan,Zhang Jiayuan and Feng Tao. Preparation of nanoscale Fe/Ni@attapulgite composite and its adsoption property for Zn(II) from aqueous solution[J]. Journal of Wuhan University of Science and Technology, 2018, 41(5): 370-375 |
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| Authors: | Liu Hong Gong Xuan Fan Xianyuan Zhang Jiayuan Feng Tao |
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| Affiliation: | College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan 430081, China,College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China,College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan 430081, China,College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China and College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Wuhan 430081, China;Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan 430081, China |
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| Abstract: | |
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| Keywords: | nanoscale zero-valent iron(nZVI) Fe/Ni attapulgite Zn(II) adsorption |
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