Iron-organic matter colloid control rare earth element environmental mobility

IF 7.9 2区 化学 Q1 CHEMISTRY, PHYSICAL Current Opinion in Colloid & Interface Science Pub Date : 2024-09-13 DOI:10.1016/j.cocis.2024.101859
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Abstract

Rare earth elements (REE) have raised significant environmental concerns due to their increasing use in human activities and subsequent release into the environment. Hence, in the context of growing demand for “green” technologies and potential mismanagement of their life cycle, understanding their potential mobility within and between environmental compartments becomes crucial for evaluating their environmental risks. Colloids emerge as primary carriers/vectors facilitating REE mobility and transfer in the environment. This work addresses major topics related to the control exerted by colloids on the REE speciation and subsequent patterns. Among colloids, iron-organic matter colloids have been identified as the major REE carrier in surface water under various pedoclimatic conditions. Compelling evidences were provided that the mixing of iron-, organic- and iron-organic colloids could explain both REE concentration and pattern under environmental conditions. However, there is currently a lack of data on the specific distribution of REE between the iron and organic matter phases within Fe-OM colloids. It remains unclear whether REE distribution is primarily controlled by colloid mixing since structural rearrangements of Fe-OM colloids under varying hydrological and physicochemical conditions exert also a significant role.

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铁有机物胶体控制稀土元素的环境流动性
由于稀土元素(REE)在人类活动中的使用日益增多,并随之释放到环境中,因此引起了人们对环境问题的极大关注。因此,在对 "绿色 "技术的需求不断增长以及对其生命周期的潜在管理不善的背景下,了解稀土元素在环境区划内和环境区划间的潜在流动性对于评估其环境风险至关重要。胶体是促进稀土元素在环境中流动和转移的主要载体/载体。本研究探讨了与胶体对 REE 分型及后续模式的控制有关的主要课题。在胶体中,铁-有机物胶体已被确定为各种气候条件下地表水中的主要 REE 载体。有令人信服的证据表明,铁胶体、有机胶体和铁有机胶体的混合可以解释环境条件下的 REE 浓度和模式。不过,目前还缺乏有关铁-有机质胶体中铁相和有机质相之间 REE 具体分布情况的数据。目前还不清楚 REE 分布是否主要受胶体混合的控制,因为在不同的水文和物理化学条件下,Fe-OM 胶体的结构重排也发挥着重要作用。
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来源期刊
CiteScore
16.50
自引率
1.10%
发文量
74
审稿时长
11.3 weeks
期刊介绍: Current Opinion in Colloid and Interface Science (COCIS) is an international journal that focuses on the molecular and nanoscopic aspects of colloidal systems and interfaces in various scientific and technological fields. These include materials science, biologically-relevant systems, energy and environmental technologies, and industrial applications. Unlike primary journals, COCIS primarily serves as a guide for researchers, helping them navigate through the vast landscape of recently published literature. It critically analyzes the state of the art, identifies bottlenecks and unsolved issues, and proposes future developments. Moreover, COCIS emphasizes certain areas and papers that are considered particularly interesting and significant by the Editors and Section Editors. Its goal is to provide valuable insights and updates to the research community in these specialized areas.
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