Phosphate removal by a La(OH)(3) loaded magnetic MAPTAC-based cationic hydrogel: Enhanced surface charge density and Donnan membrane effect
文献类型：期刊论文
| 作者 | Zhou, Yanqing; Wang, Yili; Dong, Shuoxun; Hao, Haotian ; Li, Junyi; Liu, Chenyang; Li, Xiaolin; Tong, Yao
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| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES
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| 出版日期 | 2022-03 |
| 卷号 | 113期号:0页码:26-39 |
| ISSN号 | 1001-0742 |
| 关键词 | AQUEOUS-SOLUTIONS ANION-EXCHANGER IRON-OXIDE ADSORPTION WATER PERFORMANCE ARSENATE RECOVERY NANOPARTICLES (HYDR)OXIDES |
| 英文摘要 | Cationic hydrogels have received great attention to control eutrophication and recycle phosphate. In this study, a type of La(OH)(3) loaded magnetic MAPTAC-based cationic hydrogel (La(OH)(3)@MMCH) was developed as a potential adsorbent for enhanced phosphate removal from aqueous environment. La(OH)(3)@MMCH exhibited high adsorption capacity of 105.72 +/- 5.99 mg P/g, and reached equilibrium within 2 hr. La(OH)(3)@MMCH could perform effectively in a wide pH range from 3.0 to 9.0 and in the presence of coexisting ions (including SO42-, Cl-, NO3-, HCO3-, SiO44- and HA). The adsorption-desorption experiment indicated that La(OH)(3)@MMCH could be easily regenerated by using NaOH-NaCl as the desorption agent, and 73.3% adsorption capacity remained after five cycles. Moreover, La(OH)(3)@MMCH was employed to treat surface water with phosphate concentration of 1.90 mg/L and showed great removal efficiency of 95.21%. Actually, MMCH showed high surface charge density of 34.38-59.38 meq/kg in the pH range from 3.0 to 11.0 and great swelling ratio of 3014.57% within 24 h, indicating that MMCH could produce the enhanced Donnan membrane effect to pre-permeate phosphate. Furthermore, the bifunctional structure of La(OH)(3)@MMCH enabled it to capture phosphate through electrostatic attraction and ligand exchange. All the results prove that La(OH)(3)@MMCH is a promising adsorbent for eutrophication control and phosphate recovery. (C) 2021 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47716]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 通讯作者 | Wang, Yili |
| 作者单位 | 1.Beijing Forestry Univ, Coll Environm Sci & Engn, Beijing Key Lab Source Control Technol Water Poll, Beijing 100083, Peoples R China 2.Tsinghua Univ, Ctr Water & Ecol, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100083, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Yanqing,Wang, Yili,Dong, Shuoxun,et al. Phosphate removal by a La(OH)(3) loaded magnetic MAPTAC-based cationic hydrogel: Enhanced surface charge density and Donnan membrane effect[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2022,113(0):26-39. |
| APA | Zhou, Yanqing.,Wang, Yili.,Dong, Shuoxun.,Hao, Haotian.,Li, Junyi.,...&Tong, Yao.(2022).Phosphate removal by a La(OH)(3) loaded magnetic MAPTAC-based cationic hydrogel: Enhanced surface charge density and Donnan membrane effect.JOURNAL OF ENVIRONMENTAL SCIENCES,113(0),26-39. |
| MLA | Zhou, Yanqing,et al."Phosphate removal by a La(OH)(3) loaded magnetic MAPTAC-based cationic hydrogel: Enhanced surface charge density and Donnan membrane effect".JOURNAL OF ENVIRONMENTAL SCIENCES 113.0(2022):26-39. |
入库方式： OAI收割
来源：生态环境研究中心
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