A comprehensive review of spinel ferrites and their magnetic composites as highly efficient adsorbents of rare earth elements

IF 5.3 2区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Emerging Contaminants Pub Date : 2024-10-28 DOI:10.1016/j.emcon.2024.100429
Seyed Faridedin Rafie , Nidal Abu-Zahra , Mika Sillanpää
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Abstract

Rare earth elements (REEs), comprising 17 % of known elements, are pivotal in diverse industries. Despite their name, they are not geologically rare but dispersed, posing challenges for economically viable mining. This review explores the environmental and health implications of REEs, emphasizing their emerging status as contaminants in aquatic environments, raising health concerns through the food chain. The necessity to recover REEs from wastewater demands efficient methods, particularly focusing on adsorption. Spinel ferrites (SFs), characterized by superparamagnetism and thermal stability, are gaining prominence in this context. Utilizing metal cations like Fe, Co, Ni, Mn, Zn, and Cu, SF-based magnetic nanocomposites exhibit remarkable efficiency in adsorbing REEs. This article delves into adsorption mechanisms, including electrostatic interactions and ion exchange, highlighting the advantages of stability, biocompatibility, and cost-effectiveness associated with SFs. SF-based nanocomposites, offering scalability and effectiveness at low concentrations, emerge as a promising solution for addressing environmental concerns related to REEs while meeting the escalating demand for these essential elements.

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全面评述作为稀土元素高效吸附剂的尖晶铁氧体及其磁性复合材料
稀土元素(REEs)占已知元素的 17%,在各行各业中举足轻重。尽管它们的名字叫稀土,但它们在地质上并不稀有,而是很分散,这给经济上可行的开采带来了挑战。这篇综述探讨了稀土元素对环境和健康的影响,强调了稀土元素在水生环境中作为污染物的新地位,通过食物链引起人们对健康的关注。要从废水中回收 REEs,就必须采用高效的方法,尤其是吸附法。具有超顺磁性和热稳定性的尖晶铁氧体(SF)在这方面的作用日益突出。利用铁、钴、镍、锰、锌和铜等金属阳离子,SF 基磁性纳米复合材料在吸附 REEs 方面表现出了显著的效率。本文深入探讨了吸附机理,包括静电相互作用和离子交换,强调了 SFs 在稳定性、生物相容性和成本效益方面的优势。基于 SF 的纳米复合材料在低浓度下具有可扩展性和有效性,是解决与 REEs 相关的环境问题,同时满足对这些基本元素不断增长的需求的一种前景广阔的解决方案。
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来源期刊
Emerging Contaminants
Emerging Contaminants Medicine-Public Health, Environmental and Occupational Health
CiteScore
10.00
自引率
6.70%
发文量
35
审稿时长
44 days
期刊介绍: Emerging Contaminants is an outlet for world-leading research addressing problems associated with environmental contamination caused by emerging contaminants and their solutions. Emerging contaminants are defined as chemicals that are not currently (or have been only recently) regulated and about which there exist concerns regarding their impact on human or ecological health. Examples of emerging contaminants include disinfection by-products, pharmaceutical and personal care products, persistent organic chemicals, and mercury etc. as well as their degradation products. We encourage papers addressing science that facilitates greater understanding of the nature, extent, and impacts of the presence of emerging contaminants in the environment; technology that exploits original principles to reduce and control their environmental presence; as well as the development, implementation and efficacy of national and international policies to protect human health and the environment from emerging contaminants.
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