First-Principles Study on the Migration of Heavy Metal Ions in Ice-Water Medium from Ulansuhai Lake

Sun, Chong; Li, Changyou; Li, Jianjun; Shi, Xun; Zhao, Shengnan; Wu, Yong; Tian, Weidong

doi:10.3390/w10091149

Cited by 16 publications

(11 citation statements)

References 27 publications

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“…In other words, TMn migrated from the ice body to the under-ice water body during the process of water icing. These results were consistent with those of Sun [30], who confirmed the mechanism for the migration of heavy metal ions from ice to water when lakes are freezing from the perspective of energy change. As the thickness of ice increased, the concentration of TMn in the under-ice water body increased continuously, while K continued to decrease, the process of water icing caused the migration of Mn into the under-ice water.…”

Section: Natural Icing Experimentssupporting

confidence: 92%

“…The TMn content in the water sample was calculated based on the obtained absorbance and calibration curve. For all samples, the concentration of TMn was tested in triplicate, according to the 'Water and Wastewater monitoring analysis method' [29] and Sun's study [30]; the standard deviation of sample test result was controlled within 5%.…”

Section: Natural Icing Experimentsmentioning

confidence: 99%

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Research on the Migration of the Total Manganese during the Process of Water Icing

Zhang

Yuanqing

et al. 2019

Water

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Our research focused on the migration law of the total manganese (TMn) during the process of water icing. We utilized two experimental methods: (1) natural icing and (2) simulated icing. While using laboratory simulation, we explored the effects of ice thickness, freezing temperature, and initial concentrations on the migration of TMn in the ice-water system. The distribution coefficient “K” (the ratio of the average concentration of TMn in the ice body to the average concentration of TMn in the under-ice water body) was used to characterize it. The results indicated that TMn continuously migrated from ice to under-ice water during the process of water icing. The concentration of TMn in the ice was the upper layer < middle layer < lower layer, and K decreases as the ice thickness, freezing temperature, and initial concentration increased. We explained the migration of TMn during the process of water icing from the perspective of crystallography. Our research can arouse other researcher’s attention towards the change of TMn concentration in lakes in high latitudes during the icebound period.

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Section: Natural Icing Experimentssupporting

confidence: 92%

Section: Natural Icing Experimentsmentioning

confidence: 99%

Research on the Migration of the Total Manganese during the Process of Water Icing

Zhang

Yuanqing

et al. 2019

Water

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“…Lake freezing in natural conditions is a macroscopic and complex process, which may influence the translocation of pollutants between solid ice and liquid water in an aquatic system. In order to explore the mechanism for the migration of heavy metal ions (HMIs) from ice to water in a lake, Sun et al [15] carried out a laboratory freezing experiment and simulated the distribution and migration of HMIs (Fe, Cu, Mn, Zn, Pb, Cd, and Hg) under different conditions. The results demonstrated that HMIs could migrate from ice to water as the lake froze, due to the binding energy in water being smaller than that in ice.…”

Section: Background Investigationmentioning

confidence: 99%

Lake and River Restoration: Method, Evaluation and Management

Lyu

Song

Chen

et al. 2020

Water

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Eutrophication has become one of the major environmental issues of global concern due to the adverse effects on water quality, public health and ecosystem sustainability. Fundamental research on the restoration of eutrophic freshwaters, i.e., lakes and rivers, is crucial to support further evidence-based practical implementations. This Special Issue successfully brings together recent research findings from scientists in this field and assembles contributions on lake and river restoration. The 12 published papers can be classified into, and contribute to, three major aspects of this topic. Firstly, a background investigation into the migration of nutrients, and the characteristics of submerged biota, will guide and assist the understanding of the mechanisms of future restoration. Secondly, various restoration strategies, including control of both external and internal nutrients loading, are studied and evaluated. Thirdly, an evaluation of the field sites after restoration treatment is reported in order to support the selection of appropriate restoration approaches. This paper focuses on the current environmental issues related to lake and river restoration and has conducted a comprehensive bibliometric analysis in order to emphasise the fast-growing attention being paid to the research topic. The research questions and main conclusions from all papers are summarised to focus the attention toward how the presented studies aid gains in scientific knowledge, engineering experience and support for policymakers.

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“…Міграція полютантів різноманітного походження все ще залишається нагальною проблемою сьогодення (Ren et al, 2010;Nissensohn et al, 2016;Sun et al, 2018). Проблема забруднення стосується як природних водойм, так і водойм штучного походження, серед яких особливої уваги потребують канали, які не тільки виконують функції забезпечення водою посушливих ділянок, а і є місцем існування популяцій гідробіонтів (Khrystenko et al, 2013).…”

Section: вступunclassified

Dynamics of quality indicators of water status in the principal channel “Dnipro‒Donbas” resulting of seasonal pumping

Vasylieva¹,

Novitskyi²,

Hubanova³

et al. 2019

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The results of assessing the dynamics of water quality changes in artificial reservoirs after annual seasonal pumping are presented. The hydrochemical index was the criterion for evaluation, a comparative environmental assessment of the quality of the channel water was carried out by quantity of this index. It is proved that the hydroecosystem of the "Dnipro-Donbas" channel is a dynamic system that requires constant monitoring, identification, elimination of sources of pollution and conducting of hydrotechnical and melioration works. The index of the specific indicator block and the trophic-saprophytic indicator block are twice bigger than the salinity index, that means the indices of these blocks have a significant effect on the deterioration of water quality in the channel. It was established that hydrotechnical arrangements affect the level of mineralization in the reservoir: there are processes of salts migration in the water, the level of sulfates and chlorides significantly decreases. The carrying out of hydrotechnical arrangements affects the level of saprobity in the reservoirs, which leads to a significant increase of the oxygen level in water. In the channel water before pumping a high content of 90 Sr is observed, although in the organisms of fish (goldfish Carassius auratus gibelio, silver carp Hypophthalmichthys molitrix, grass carp Ctenopharyngodon idella, common carp Cyprinus carpio, eastern bream Abramis brama) the content of radionuclides (137 Cs, 90 Sr) remains within permissible levels. After pumping water, the content of radionuclides decreases by 9.7 times. Fish products in the "Dnipro-Donbas" channel are safe by radioecological indicators. Due to the dilution of water the dynamics of eutrophication processes decreases; during mixing aeration of water masses occurs, which undoubtedly positively affects the state of the ecosystem of the "Dnipro-Donbas" channel. The water quality of the "Dnipro-Donbas" channel with the average values of the indicators before pumping and after it belongs to the second class of quality and can be evaluated as "good" and "clean". The above calculations show the positive influence of hydrotechnical works on the quality of water in the channel. Hydrobiological, biochemical, microbiological indicators and indicators of biological testing require further research for effective compensatory environmental arrangements, development of recommendations on the mode of operation of the "Dnipro-Donbas" channel. To assess objectively the environmental status of the channel it is necessary to develop and implement an effective environmental monitoring system.

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First-Principles Study on the Migration of Heavy Metal Ions in Ice-Water Medium from Ulansuhai Lake

Cited by 16 publications

References 27 publications

Research on the Migration of the Total Manganese during the Process of Water Icing

Research on the Migration of the Total Manganese during the Process of Water Icing

Lake and River Restoration: Method, Evaluation and Management

Dynamics of quality indicators of water status in the principal channel “Dnipro‒Donbas” resulting of seasonal pumping

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