文献类型：期刊文献

英文题名：High-efficiency adsorption of phosphate by Fe-Zr-La tri-metal oxide composite from aqueous media: Performance and mechanism

作者：Liu, Bao[1];Lou, Sichao[1];Zeng, Yang[1];Qin, Yan[1];Zhang, Wenqing[1];Zhang, Lingfan[1,2];Liu, Xin[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Ctr Anal & Test, Shanghai 200237, Peoples R China

年份：2021

卷号：32

期号：12

起止页码：4587

外文期刊名：ADVANCED POWDER TECHNOLOGY

收录：;EI(收录号：20214511138439);WOS:【SCI-EXPANDED(收录号:WOS:000728504800002)】；

基金：This work was supported by the National Natural Science Foundation of China [grant number 21407050].

语种：英文

外文关键词：Fe-Zr-La tri-metal oxide composite; Phosphate; Adsorption; Mechanism

摘要：In this study, Fe-Zr-La tri-metal oxide (FZLO) composite was synthesized by co-precipitation method as new complex adsorbent for effective phosphate removal from aqueous media. The scanning electron microscopic study revealed that the adsorbent was of amorphous structure and consisted of the inhomogeneous aggregated nanoparticles with different sizes. Various influencing parameters such as pH values, initial concentration of phosphate ions, contact time, temperature and co-existing anions were studied to perform batch adsorption experiments. The experimental results demonstrated that the adsorption process was highly pH-dependent and obtained the maximum phosphate adsorption capacity of 101.0 mg g = 1 at pH = 6. The adsorption process occurred on surface of FZLO composite has been found to be monolayered and chemisorption dominated in nature as the data fitted well to Langmuir isotherm as well as the pseudo-second-order kinetic model. The structure and properties of the adsorbent before and after adsorption using FT-IR, XRD and XPS techniques suggested that the adsorption mechanisms involved electrostatic attraction, complexation and ligand exchange. After the adsorption, the remained P concentration met the permissible limit by the Environmental Protection Agency. The Fe-Zr-La tri-metal oxide composite could be a promising adsorbent for phosphate removal from aqueous media. (c) 2021 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.