通过平衡动力学建模预测废弃的贝克矿（俄罗斯卡累利阿）废石可能释放的污染物

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-10 DOI:10.17741/bgsf/96.1.004

Evgeniya Sidkina, Evgeniya Soldatova, Elena Cherkasova, Artem Konyshev, Andrey Toropov, Sofia Vorobey, Mikhail Mironenko

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引用次数: 0

摘要

位于俄罗斯卡累利阿共和国的贝克矿是一个废弃的采矿场，由于其废石中存在潜在的污染物，因此极有可能造成环境污染。在这项研究中，我们调查了矿井水和废石的化学成分，并建立了一个理论模型来了解水石相互作用和潜在污染物的释放。我们对从贝克矿区不同地点采集的水样进行了化学成分分析，结果显示溶解性总固体浓度较低，pH 值在 6.42 到 7.74 之间。天然水的化学成分是通过 ICP-MS、ICP-AES、离子色谱法、电位滴定法和分光光度法测定的。平衡动力学模型用于模拟水与岩石之间的相互作用。该模型预测了主要元素和痕量元素的浓度，表明溶解沉淀和络合作用是形成矿井水化学成分的主要机制。含铁矿物的溶解沉淀动态突出了水与岩石相互作用持续时间的重要性，矿井水在停滞状态下重金属浓度较高。此外，溶解有机物的存在对铁和砷在所研究矿井水中的积累起到了关键作用。总之，这项研究强调了平衡动力学模型在理解重金属在水岩相互作用过程中的行为方面的实用性，并为了解贝克矿等废弃矿址对环境的潜在影响提供了宝贵的见解。

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Predicting potential pollutant release from waste rock at the abandoned Beck mine (Karelia, Russia) by equilibrium kinetic modeling

The Beck mine, located in the Republic of Karelia, Russia, is an abandoned mining site with significant potential for environmental contamination due to the presence of potential pollutants in its waste rocks. In this study, we investigated the chemical composition of mine waters and waste rocks and developed a theoretical model to understand waterrock interactions and the release of potential pollutants. Water samples collected from various locations on the Beck mine property were analyzed for chemical composition and showed low concentrations of total dissolved solids with pH values ranging from 6.42 to 7.74. The chemical composition of natural waters was determined by ICP-MS, ICP-AES, ion chromatography, potentiometric titration, and spectrophotometry. Equilibrium kinetic modeling was used to simulate water-rock interactions. The model predicted the concentrations of major and trace elements, demonstrating that dissolutionprecipitation and complexation are the primary mechanisms shaping the chemical composition of mine waters. The dynamics of dissolution-precipitation of Fe-containing minerals highlighted the importance of the duration of water-rock interaction, with stagnant mine waters exhibiting higher concentrations of heavy metals. In addition, the presence of dissolved organic matter played a critical role in the accumulation of iron and arsenic in the studied mine waters. Overall, this study highlights the utility of equilibrium kinetic modeling in understanding the behavior of heavy metals during water-rock interactions and provides valuable insights into the potential environmental impacts of abandoned mine sites such as the Beck mine.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.