| N,N-二甲基乙酰胺在水体泥沙中的吸附及光解特性 |
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| 引用本文： | 张红,蒋进元,周岳溪,陈学民. N,N-二甲基乙酰胺在水体泥沙中的吸附及光解特性[J]. 环境科学研究, 2009, 22(8): 902-906 |
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| 作者姓名： | 张红 蒋进元 周岳溪 陈学民 |
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| 作者单位： | 兰州交通大学环境与市政工程学院,甘肃,兰州,730070;中国环境科学研究院水污染控制技术研究中心,北京,100012;中国环境科学研究院水污染控制技术研究中心,北京,100012;兰州交通大学环境与市政工程学院,甘肃,兰州,730070 |
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| 基金项目： | 国家水体污染与治理科技重大专项 |
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| 摘 要： | 实验室模拟条件下研究了泥沙对N,N-二甲基乙酰胺(DMAC)的吸附和光解特性以及影响因素. 结果表明:DMAC在泥沙中的吸附同时符合Langmuir模型和Freundlich模型. 不同紫外光照强度下,DMAC的光解反应半衰期均大于8 h. DMAC的光解率随光照强度的增大而增大;在ρ(DMAC)较低范围(<20 mg/L)内,同一紫外光照强度下,初始ρ(DMAC)越高光解速率越快;在pH为6～9的自然环境中,初始pH越高越有利于DMAC的光解;当水体中含有腐殖酸时,DMAC的光解率显著降低.
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| 关 键 词： | DMAC 吸附 光解 腐殖酸 水体 |
| 收稿时间： | 2008-12-03 |
| 修稿时间： | 2009-02-05 |
Adsorption and Photodegradation of N,N-Dimethylacetamide on Suspended Sediment Particles in Water |
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| ZHANG Hong,JIANG Jin-yuan,ZHOU Yue-xi and CHEN Xue-min. Adsorption and Photodegradation of N,N-Dimethylacetamide on Suspended Sediment Particles in Water[J]. Research of Environmental Sciences, 2009, 22(8): 902-906 |
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| Authors: | ZHANG Hong JIANG Jin-yuan ZHOU Yue-xi CHEN Xue-min |
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| Affiliation: | 1.Department of Environment and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China;Research Center of Water Pollution Control Technology, Chinese Research Academy of Environment Sciences, Beijing 100012, China2.Research Center of Water Pollution Control Technology, Chinese Research Academy of Environment Sciences, Beijing 100012, China3.Department of Environment and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China |
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| Abstract: | Adsorption and photodegradation of N,N-dimethylacetamide(DMAC) on suspended sediment particles in water and their influence were studied experimentally.The results demonstrate that DMAC adsorption on sediment particles is in accordance with both the Langmuir and Freundlich models.The photolytic half-life of DMAC in water is longer than 8 h under different UV illumination intensities.Photodegradation of DMAC in water increases with increasing UV illumination intensity.The photodegradation rate of DMAC is hig... |
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| Keywords: | DMAC |
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