磁性纳米颗粒去除Wadi El Bey河流域废水中可氧化性污染物的研究

IF 2.6 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Magnetochemistry Pub Date : 2023-06-14 DOI:10.3390/magnetochemistry9060157

H. Tlili, Anis Elaoud, N. Asses, K. Horchani-Naifer, Mounir Ferhi, G. Goya

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引用次数: 0

摘要

目前从水中去除污染物的许多策略都是基于纳米材料和纳米技术。水中生物需氧量(BOD5)和化学需氧量(COD)值的降低导致可氧化污染物的数量减少。本文研究了磁铁矿纳米颗粒(MNPs)和磁场对Wadi El Bey河(突尼斯)水中COD和BOD5的还原作用。60 min后COD和BOD5去除率均达到50%以上，pH≈8、MNPs浓度为1 g/L时效果最佳。使用永磁场(0.33 T)时，COD和BOD5去除率分别从61%提高到76%和63%提高到78%。从磁场诱导MNPs凝固和Fe3O4亲和作用下离子在MNPs表面的吸附两方面讨论了这种增强。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Reduction of Oxidizable Pollutants in Waste Water from the Wadi El Bey River Basin Using Magnetic Nanoparticles as Removal Agents

Many of the current strategies for removing pollutants from water are based on nanomaterials and nanotechnology. Lower values of Biological Oxygen Demand (BOD5) and Chemical Oxygen Demand (COD) in water results in reduction in the amount of oxidizable pollutants. We present a study on the reduction of COD and BOD5 in water from Wadi El Bey River (Tunisia), using magnetite nanoparticles (MNPs) and magnetic fields. The COD and BOD5 removal reached values higher than 50% after 60 min, with optimum efficiency at pH values of ≈8 and for MNPs concentrations of 1 g/L. The use of a permanent magnetic field (0.33 T) showed an increase of COD and BOD5 removal from 61% to 76% and from 63% to 78%, respectively. This enhancement is discussed in terms of the MNPs coagulation induced by the magnetic field and the adsorption of ionic species onto the MNPs surface due to Fe3O4 affinity.

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来源期刊

Magnetochemistry Chemistry-Chemistry (miscellaneous)

CiteScore

3.90

自引率

11.10%

发文量

145

审稿时长

11 weeks

期刊介绍： Magnetochemistry (ISSN 2312-7481) is a unique international, scientific open access journal on molecular magnetism, the relationship between chemical structure and magnetism and magnetic materials. Magnetochemistry publishes research articles, short communications and reviews. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.