Study on Cu(Ⅱ) Removal Properties of Sulfide Nano Zero-valent Iron Composites

被引：0

作者：

Ding, Yarong ^{[1
]}

Li, Canhua ^{[1
,2
]}

Zhang, Lanyue ^{[1
]}

Li, Jiamao ^{[3
]}

He, Chuan ^{[1
]}

Li, Minghui ^{[1
]}

Zhu, Weichang ^{[3
]}

Wei, Shuxian ^{[1
]}

机构：

[1] School of Metallurgical Engineering, Anhui University of Technology, Anhui, Ma'anshan

[2] Research Institute of Intelligent Equipment Technology of AHUT, Anhui, Ma'anshan

[3] School of Materials Science and Engineering, Anhui University of Technology, Anhui, Ma'anshan

来源：

Cailiao Daobao/Materials Reports | 2025年 / 39卷 / 02期

关键词：

adsorption; Cu(Ⅱ) wastewater; S-nZVI; sodium dithionite;

D O I：

10.11896/cldb.23070123

中图分类号：

学科分类号：

摘要：

Sulfide nano zero-valent iron (S-nZVI) and its composites are famous for their excellent performance in removing heavy metals, but the high preparation cost greatly limits the development and application of S-nZVI. In this work, S-nZVI@Ma nanocomposites were prepared by fluidizing phase reaction using Na2S2O4 as a single reducing agent. S-nZVI@Ma was characterized by means of SEM, TEM, EDS, XPS, XRD, FTIR and VSM. The removal effect of S-nZVI@Ma on Cu(Ⅱ) from simulated wastewater was studied. The results show that S-nZVI@Ma can efficiently remove more than 99% Cu(Ⅱ) from the simulated waste liquid and can be separated from the simulated waste liquid by external magnet. After 5 times of reuse, the removal rate of Cu(Ⅱ) by S-nZVI@Ma remained above 75%, indicating that the material has good magnetic recycling performance. The removal process of Cu(Ⅱ) conforms to the quasi-second-order kinetic model and the Langmuir isothermal adsorption model, and the maximum capacity (qmax ) is 71. 43 mg · g-1. Thermodynamic studies show that the removal process is spontaneous and endothermic. The reactants were characterized by FESEM-EDS, XRD, XPS and FTIR, and the reaction mechanism was discussed from the point of view of electron transfer. The above research can provide reference for the practical application of S-nZVI. © 2025 Cailiao Daobaoshe/ Materials Review. All rights reserved.

引用

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