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| 聚苯乙烯磺酸钠对零价纳米铁表面结构和去除水中As(Ⅲ)的影响 | |
| 引用本文： | 雷蕾,李筱琴,殷其亮,杨琛,党志.聚苯乙烯磺酸钠对零价纳米铁表面结构和去除水中As(Ⅲ)的影响[J].环境科学学报,2013,33(2):408-414. |
| 作者姓名： | 雷蕾 李筱琴 殷其亮 杨琛 党志 |
| 作者单位： | 1. 华南理工大学环境科学与工程学院,广州510006;广州华科环保工程有限公司,广州510655 2. 华南理工大学环境科学与工程学院,广州510006;工业聚集区污染控制与生态修复教育部重点实验室,华南理工大学,广州510006 3. 华南理工大学环境科学与工程学院,广州,510006 |
| 基金项目： | 国家自然科学基金面上项目(No.41103050,41072268);广东省自然科学基金项目(No.10151064101000066);华南理工大学基本科研业务费(No. 2011ZM0051) |
| 摘 要： | 零价纳米铁由于其高反应活性及应用中的灵活性,在地下水原位治理中备受关注.但在应用中,常需要加入分散剂以提高纳米铁悬浮液的稳定性因此,本文以低浓度的聚苯乙烯磺酸钠(PSS)作为分散剂,制备了能长时间稳定的复合零价纳米铁(nZVI/PSS)悬浮液,并探讨PSS对nZVI表面结构和去除As(Ⅲ)过程中的影响,结果表明,nZVI和nZVI/PSS颗粒平均粒径均为50 ～ 60 nm；X射线光电子能谱(XPS)结果表明,相比于nZVI,nZVI/PSS表面上C、OH-和O2-的百分含量增高,而吸附的H2O减少；X-射线衍射(XRD)结果显示,nZVI/PSS在44.8°出现α-Fe0的X射线衍射峰,结晶度比nZVI显著提高.批实验结果表明,As(Ⅲ)的去除率随nZVI(nZVI/PSS)投加量的增大而提高,随溶液初始pH的增大而降低,且nZVI/PSS对As(Ⅲ)的去除率略低于nZVI.动力学拟合结果显示,nZVI和nZVI/PSS对As(Ⅲ)的去除符合准一级反应动力学方程. |
| 关 键 词： | 聚苯乙烯磺酸钠 复合零价纳米铁 分散 三价砷 准一级动力学 |
| 收稿时间： | 2012/3/12 0:00:00 |
| 修稿时间： | 2012/6/29 0:00:00 |
Impacts of poly (styrenesulfonate) on nanoscale zero-valent iron particles:The surface and As(Ⅲ) removal |
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| LEI Lei,LI Xiaoqin,YIN Qiliang,YANG Chen and DANG Zhi.Impacts of poly (styrenesulfonate) on nanoscale zero-valent iron particles:The surface and As(Ⅲ) removal[J].Acta Scientiae Circumstantiae,2013,33(2):408-414. | |
| Authors: | LEI Lei LI Xiaoqin YIN Qiliang YANG Chen and DANG Zhi |
| Institution: | 1. School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006;2. Guangzhou HuaKe Environmental Engineering Co., Ltd, Guangzhou 510655;1. School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006;2. The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of the Ministry of Education, South China University of Technology, Guangzhou 510006;School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006;1. School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006;2. The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of the Ministry of Education, South China University of Technology, Guangzhou 510006;1. School of Environmental Science and Engineering, South China University of Technology, Guangzhou 510006;2. The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters of the Ministry of Education, South China University of Technology, Guangzhou 510006 |
| Abstract: | |
| Keywords: | poly(styrenesulfonate) compound zero-valent iron nanoparticle dispersed trivalent arsenic pseudo-first-order kinetics |
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