Lanthanum carbonate hydroxide/magnetite nanoparticles functionalized porous biochar for phosphate adsorption and recovery: Advanced capacity and mechanisms study
文献类型：期刊论文
| 作者 | Lan, Yibo; Gai, Shuang; Cheng, Kui; Li, Jiangshan; Yang, Fan |
| 刊名 | ENVIRONMENTAL RESEARCH
 |
| 出版日期 | 2022-11-01 |
| 卷号 | 214 |
| ISSN号 | 0013-9351 |
| 关键词 | Phosphate adsorption Functionalized Porous biochar Lanthanum carbonate hydroxide Magnetite Removal mechanisms |
| 英文摘要 | As the increase of global industrial activities, phosphate from industrial wastes such as sewage sludge has become one of the limiting factors for water eutrophication. Herein, lanthanum carbonate hydroxide (La(CO3)OH)/ magnetite (Fe3O4) nanoparticles functionalized porous biochar (La/Fe-NBC) with high phosphate adsorption properties is synthesized through molten salt pyrolysis-coprecipitation-hydrothermal multi-step regulation, and further reveal the related processes and mechanisms. La(CO3)OH functions as active sites for phosphate adsorption, Fe3O4 imparts magnetic properties to the composite substance, also porous biochar (NBC) acts as the carrier to prevent the agglomeration of La(CO3)OH and Fe3O4 nanoparticles. The adsorption process of La/Fe-NBC for phosphate fits to the Pseudo-Second Order and Langmuir model, with the theoretical maximum adsorption capacity up to 99.46 mg P/g. And La/Fe-NBC possesses excellent magnetic field (14.50 emu/g), stability, and selectivity, which enables for efficient multiple recovery and reuse. Mechanistic studies have shown that ligand exchange (inner-sphere complexation) between phosphate and carbonate/hydroxyl groups of La (CO3)OH, and electrostatic attraction play the dominant roles during adsorption process, although susceptible to the solution pH. While co-precipitation is not influenced of pH conditions but with limited contribution to phosphate adsorption. This study may facilitate to optimize the synthesis design of phosphate multi-functional composites for low-carbon and sustainable treatment of industrial phosphate-containing wastes. |
| 学科主题 | Environmental Sciences & Ecology ; Public, Environmental & Occupational Health |
| 语种 | 英语 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| WOS记录号 | WOS:000835181400004 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34940]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Northeast Agricultural University - China; Northeast Agricultural University - China; 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS |
| 推荐引用方式 GB/T 7714 | Lan, Yibo,Gai, Shuang,Cheng, Kui,et al. Lanthanum carbonate hydroxide/magnetite nanoparticles functionalized porous biochar for phosphate adsorption and recovery: Advanced capacity and mechanisms study[J]. ENVIRONMENTAL RESEARCH,2022,214. |
| APA | Lan, Yibo,Gai, Shuang,Cheng, Kui,Li, Jiangshan,&Yang, Fan.(2022).Lanthanum carbonate hydroxide/magnetite nanoparticles functionalized porous biochar for phosphate adsorption and recovery: Advanced capacity and mechanisms study.ENVIRONMENTAL RESEARCH,214. |
| MLA | Lan, Yibo,et al."Lanthanum carbonate hydroxide/magnetite nanoparticles functionalized porous biochar for phosphate adsorption and recovery: Advanced capacity and mechanisms study".ENVIRONMENTAL RESEARCH 214(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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