Effects of metal cations on sorption-desorption of p-nitrophenol onto wheat ash
文献类型：期刊论文
| 作者 | Wang, YS; Pei, ZG; Shan, XQ; Chen, GC; Zhang, J; Xie, YN; Zheng, LR; Zhang J(张静); Xie YN(谢亚宁) ; Zheng LR(郑黎荣)
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| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
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| 出版日期 | 2011 |
| 卷号 | 23期号:1页码:#REF! |
| 关键词 | metal cations p-nitrophenol adsorption desorption wheat ash FT-IR XAS |
| 通讯作者 | Shan, XQ (reprint author), Ecoenvironm Sci Res Ctr, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China. |
| 英文摘要 | The mutual effects of metal cations (Cu(2+), Pb(2+), Zn(2+), and Cd(2+)) and p-nitrophenol (NP) on their adsorption desorption behavior onto wheat ash were studied. Results suggested that Cu(2+), Pb(2+), and Zn(2+) diminished the adsorption and increased the desorption of NP remarkably, while Cd(2+) had no such effect. In contrast, NP diminished the adsorption of Cu(2+), Pb(2+), and Zn(2+) onto ash, however, this suppression effect depended on the initial concentrations of metal cations. NP had no effect on Cd2+ adsorption on ash. Fourier transform infrared (FT-IR) and X-ray absorption spectroscopic (XAS) studies suggested the following mechanisms responsible for the metal suppression effect on NP adsorption: (1) large hydrated Cu(2+), Pb(2+), and Zn(2+) shells occupied the surface of ash and prevent nonspecific adsorption of NP onto ash surface; (2) Cu(2+), Pb(2+), and Zn(2+) may block the micropores of ash, resulting in decreased adsorption of NP; (3) complexation of Cu(2+), Pb(2+), and Zn(2+) was likely via carboxyl, hydroxylic and phenolic groups of wheat ash and these same groups may also react with NP during adsorption. As a "soft acid", Cd(2+) is less efficient in the complexation of oxygen-containing acid groups than Cu(2+), Pb(2+), and Zn(2+). Thus, Cd(2+) had no effect on the adsorption of NP on wheat ash. |
| 学科主题 | Environmental Sciences & Ecology |
| 类目[WOS] | Environmental Sciences |
| 收录类别 | SCI |
| WOS记录号 | WOS:000286571500016 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/226233]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Wang, YS,Pei, ZG,Shan, XQ,et al. Effects of metal cations on sorption-desorption of p-nitrophenol onto wheat ash[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2011,23(1):#REF!. |
| APA | Wang, YS.,Pei, ZG.,Shan, XQ.,Chen, GC.,Zhang, J.,...&郑黎荣.(2011).Effects of metal cations on sorption-desorption of p-nitrophenol onto wheat ash.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,23(1),#REF!. |
| MLA | Wang, YS,et al."Effects of metal cations on sorption-desorption of p-nitrophenol onto wheat ash".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 23.1(2011):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
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