Phosphate removal from water using freshly formed Fe-Mn binary oxide: Adsorption behaviors and mechanisms
文献类型：期刊论文
| 作者 | Lu, Jianbo ; Liu, Huijuan ; Zhao, Xu ; Jefferson, William ; Cheng, Fang ; Qu, Jiuhui |
| 刊名 | COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
 |
| 出版日期 | 2014 |
| 卷号 | 455期号:1页码:11-18 |
| 关键词 | Ferric oxide Manganese oxide Binary oxide Phosphate Adsorption |
| ISSN号 | 0927-7757 |
| 中文摘要 | Freshly formed metal oxide suspensions usually have high reactivity and are easy to achieve in-situ preparation and dosing in water treatment. In this study, a freshly formed Fe-Mn binary oxide (FMBO) suspension was prepared for phosphate removal using simultaneous oxidation and coprecipitation method. FMBO was characterized by SEM, TEM, XRD and zeta potential and compared with the mixture of ferric oxide and manganese oxides (FMMO), hydrous ferric oxide (HFO) and hydrous manganese oxide (HMO). Results indicated that ferric oxide was relatively enriched on the surface of nanostructured binary oxide, resulting in its pH(ZPC) and XRD pattern close to HFO. At pH 3-10, phosphate removals followed trend: FMBO > FMMO > HFO > HMO. The pseudo-second-order kinetics model provided a better fit for phosphate adsorption onto FMBO, indicating that chemisorption may play a dominant role. The maximum adsorption capacity estimated from the Langmuir equation was 0.223 mol-P/mol-Fe at pH 5.0. The competition effects of coexisting substances such as sulfate, bicarbonate, silicate and DOC on phosphate adsorption using FMBO were not significant. Phosphate adsorption onto FMBO could be attributed to electrostatic interaction and replacement of surface hydroxyl groups via formation of monodentate and bidentate complexes. (C) 2014 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000337878400002 |
| 公开日期 | 2015-03-26 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/9580]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Lu, Jianbo,Liu, Huijuan,Zhao, Xu,et al. Phosphate removal from water using freshly formed Fe-Mn binary oxide: Adsorption behaviors and mechanisms[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2014,455(1):11-18. |
| APA | Lu, Jianbo,Liu, Huijuan,Zhao, Xu,Jefferson, William,Cheng, Fang,&Qu, Jiuhui.(2014).Phosphate removal from water using freshly formed Fe-Mn binary oxide: Adsorption behaviors and mechanisms.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,455(1),11-18. |
| MLA | Lu, Jianbo,et al."Phosphate removal from water using freshly formed Fe-Mn binary oxide: Adsorption behaviors and mechanisms".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 455.1(2014):11-18. |
入库方式： OAI收割
来源：生态环境研究中心
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