Adsorption of Cu(II)-EDTA chelates on tri-ammonium-functionalized mesoporous silica from aqueous solution
文献类型：期刊论文
| 作者 | Wu, Liyuan1; Wang, Hongjie2; Lan, Huachun1; Liu, Huijuan1; Qu, Jiuhui1 |
| 刊名 | SEPARATION AND PURIFICATION TECHNOLOGY
 |
| 出版日期 | 2013-09-30 |
| 卷号 | 117期号:1页码:118-123 |
| 关键词 | Tri-ammonium-functionalized Mesoporous silica Cu(II)-EDTA chelates Low concentration Adsorption |
| 通讯作者 | Liu, HJ |
| 中文摘要 | The preparation and application of tri-ammonium-functionalized mesoporous silica SBA-15 (NNN-SBA-15) for sequestering Cu(II)-EDTA chelates from aqueous solution with low concentration of 0.1 mmol/L were explored. The adsorption properties of copper in the presence of equimolar EDTA were examined as a function of initial pH, ionic strength, initial concentration and temperature. Results revealed that the adsorption of Cu(II)-EDTA chelates on NNN-SBA-15 achieved equilibrium within 2 min and fitted well with the Langmuir model. The maximum copper adsorption capacity was estimated to be 26.3 mg/g. High ionic strength (0.1 mol/L of NaNO3) influenced the removal of Cu(II)-EDTA chelates, while temperature (from 15 to 35 degrees C) had slight effect on the adsorption capacity. Compared with the copper sorption system without EDTA species, the capture ability of copper increased significantly with coexistence of EDTA species in acidic condition. XPS spectrum studies indicated that Cu(II)-EDTA was removed from aqueous solution by the electrostatic interaction and hydrogen bond interaction between the protonated amine groups of NNN-SBA-15 and Cu(II)-EDTA chelates. (C) 2013 Elsevier B.V. All rights reserved. |
| 英文摘要 | The preparation and application of tri-ammonium-functionalized mesoporous silica SBA-15 (NNN-SBA-15) for sequestering Cu(II)-EDTA chelates from aqueous solution with low concentration of 0.1 mmol/L were explored. The adsorption properties of copper in the presence of equimolar EDTA were examined as a function of initial pH, ionic strength, initial concentration and temperature. Results revealed that the adsorption of Cu(II)-EDTA chelates on NNN-SBA-15 achieved equilibrium within 2 min and fitted well with the Langmuir model. The maximum copper adsorption capacity was estimated to be 26.3 mg/g. High ionic strength (0.1 mol/L of NaNO3) influenced the removal of Cu(II)-EDTA chelates, while temperature (from 15 to 35 degrees C) had slight effect on the adsorption capacity. Compared with the copper sorption system without EDTA species, the capture ability of copper increased significantly with coexistence of EDTA species in acidic condition. XPS spectrum studies indicated that Cu(II)-EDTA was removed from aqueous solution by the electrostatic interaction and hydrogen bond interaction between the protonated amine groups of NNN-SBA-15 and Cu(II)-EDTA chelates. (C) 2013 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Engineering, Chemical |
| 研究领域[WOS] | Engineering |
| 关键词[WOS] | EDTA COMPLEXES ; REMOVAL ; ADSORBENT ; OXIDATION ; COPPER ; ELECTRODEPOSITION ; COAGULATION ; MECHANISMS ; MONOLAYERS ; RECOVERY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000324604000019 |
| 公开日期 | 2014-06-06 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/7382]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 2.Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Liyuan,Wang, Hongjie,Lan, Huachun,et al. Adsorption of Cu(II)-EDTA chelates on tri-ammonium-functionalized mesoporous silica from aqueous solution[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2013,117(1):118-123. |
| APA | Wu, Liyuan,Wang, Hongjie,Lan, Huachun,Liu, Huijuan,&Qu, Jiuhui.(2013).Adsorption of Cu(II)-EDTA chelates on tri-ammonium-functionalized mesoporous silica from aqueous solution.SEPARATION AND PURIFICATION TECHNOLOGY,117(1),118-123. |
| MLA | Wu, Liyuan,et al."Adsorption of Cu(II)-EDTA chelates on tri-ammonium-functionalized mesoporous silica from aqueous solution".SEPARATION AND PURIFICATION TECHNOLOGY 117.1(2013):118-123. |
入库方式： OAI收割
来源：生态环境研究中心
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