文献详情
Advanced phosphate removal by La-Zr-Zn ternary oxide: Performance and mechanism
文献类型：期刊
通讯作者：Zhang, GM (reprint author), Renmin Univ China, Sch Environm & Nat Resources, Beijing 100872, Peoples R China.
期刊名称：JOURNAL OF ALLOYS AND COMPOUNDS影响因子和分区
年：2020
卷：817
ISSN：0925-8388
关键词：La-Zr-Zn ternary oxide; Advanced phosphate removal; Adsorption; Performance; Ligand exchange
所属部门：环境学院
摘要：Advanced phosphate removal is in great need in order to alleviate the eutrophication problem. In this study, La-Zr-Zn ternary oxide (La-Zr-Zn) was synthesized and characterized by XRD, SEM-EDS, BET, XPS and FTIR. The synthesized La-Zr-Zn had a rough and irregular surface with specific surface area of 52.08 m(2)/g, and its surface was composed of La, Zr, Zn and o. The adsorbent was then used for adsorption of low-concentration phosphate (<2 mg/L) in water. The La-Zr-Zn showed a high phosphate rem ...More
Advanced phosphate removal is in great need in order to alleviate the eutrophication problem. In this study, La-Zr-Zn ternary oxide (La-Zr-Zn) was synthesized and characterized by XRD, SEM-EDS, BET, XPS and FTIR. The synthesized La-Zr-Zn had a rough and irregular surface with specific surface area of 52.08 m(2)/g, and its surface was composed of La, Zr, Zn and o. The adsorbent was then used for adsorption of low-concentration phosphate (<2 mg/L) in water. The La-Zr-Zn showed a high phosphate removal (>97%) with low residual phosphate levels (0.005-0.045 mg/L) at low dosage of 0.2 g/L. The adsorption process of La-Zr-Zn was in accordance with pseudo second-order kinetic model and Langmuir model. At a pH of 6.80, the phosphate adsorption capacity of La-Zr-Zn reached 71.58 mg/g. Moreover, the adsorbent showed a wide pH usability range (5-9) and selective adsorption toward phosphate. Mechanism analyses indicated that the phosphate removal could be explained by ligand exchange and electrostatic interaction. The results suggested that the La-Zr-Zn adsorbent has a potential application for advanced phosphate removal. (C) 2019 Elsevier B.V. All rights reserved. ...Hide

DOI：10.1016/j.jallcom.2019.152745
百度学术：Advanced phosphate removal by La-Zr-Zn ternary oxide: Performance and mechanism
语言：外文
基金：National Water Pollution Control and Treatment Science and Technology Major Project [2018ZX07110003]
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