Physicochemical modeling of the behavior of microelements (As, V, Cr, Co, and Hg) under the mixing of riverine and marine waters (the Razdol’naya River-Amur Bay System)

Savchenko, A. V.; Gramm-Osipov, L. M.; Mar’yash, A. A.

doi:10.1134/s0001437009010056

Cited by 3 publications

(3 citation statements)

References 8 publications

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“…However, it can be assumed that in the wastewater, by analogy with seawater [18], Hg associated with organic substances is absent due to high concentration of chloride ion. On the contrary, in the river water, at lower concentrations of Cl-, mercury can be represented by organic complexes with fulvic and humic acids [7]. This is also confirmed by the results of [19] which shows that downstream from wastewater (the Angara River, Bratsk Reservoir), the share of methylated mercury entering plankton from the aquatic environment is about 50% of its total concentration.…”

Section: Resultssupporting

confidence: 57%

“…To analyze migration characteristics of pollutants and predict further development of the ecological and geochemical environment in the river, the process of mixing water with various hydrochemical parameters was simulated. Ecological-geochemical problems have already been simulated before [7,8]. The purpose of the article is to determine forms of elements of anthropogenic origin in waste and river waters, and in zones of mixing natural and technogenic waters using physical and chemical modeling.…”

Section: Introductionmentioning

confidence: 99%

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Physical and Chemical Modeling of the Composition of River Waters Affected by Technogenic Sources(Angara River, Baikal Region)

Poletaeva¹,

Pastukhov²,

Bychinsky³

2019

Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" Dedicated to the

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The model for mixing wastewater and river water was built using Selector software. Chemical analysis of highly mineralized wastewater from the Usolye industrial zone which is one of the main pollutants of the Angara river, and river water in the area before and after exposure to technogenic sources was carried out. Forms of migration of Al, Cu, Zn, As, Cd, Pb, Hg in the geochemical systems and their transformations have been identified. Due to a high self-cleaning ability of the Angara river, concentrations of toxic elements can decrease to the background values. Technogenic pollution changes forms of these elements in the aquatic environment and increases the environmental hazard to the aquatic ecosystem.

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Section: Resultssupporting

confidence: 57%

Section: Introductionmentioning

confidence: 99%

Physical and Chemical Modeling of the Composition of River Waters Affected by Technogenic Sources(Angara River, Baikal Region)

Poletaeva¹,

Pastukhov²,

Bychinsky³

2019

Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" Dedicated to the

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“…(Meire, 2005;Samarghandi et al, 2007;Hassani et al, 2008). Information on the variability of the existence forms of microelements in estuarine waters is necessary in order to understand their behavior in passing through the geochemical barrier and their effect on estuarine ecology (Anikiev and Goryachev, 1991;Achterberg et al, 2003;Savchenko, 2009). Flocculation of dissolved metals can significantly affect the chemical mass balance between rivers and seas or lakes.…”

Section: Introductionmentioning

confidence: 99%

Comparison of controlling mechanisms of flocculation processes in estuaries

Biati

Karbassi

2010

Int. J. Environ. Sci. Technol.

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During estuarine mixing, dissolved metals come into the particulate phase due to the flocculation processes. Such processes are biologically vital. In the present study, controlling mechanisms of elemental flocculation during estuarine mixing in northern and southern estuaries of Iran in relation to the various physical and chemical parameters of waters have been compared. Except for zinc and lead, for other studied elements in Minab River, water flocculate at higher rates in comparison with the rivers flowing into the Caspian Sea. Redox potential might have negative effect on flocculation process in Minab Estuary. Contrary to rivers flowing into the Caspian Sea, in Minab River elemental flocculation is governed by dissolved organic carbon and it shows a non-liner and conservative behavior during estuarine mixing which implies that dissolved organic carbon originates from terrigenous source. The results also shows that maximum removal of elements occurs in lower salinities (1.5 to 5.8 ‰) for the rivers in North of Iran and 3.3 to 11.4 ‰ for Minab River in South of Iran. Flocculation of studied metal in different rivers results in reduction of overall metal pollution load by various percentages. The initial metal contents on river water and mean discharge of river might lead to higher flocculation rates.

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Physical-chemical modeling of elements' behavior in mixing sea and fresh waters of minor rivers in the White Sea catchment area

Maksimova

Mazukhina

Cherepanova

et al. 2017

Journal of Environmental Science and Health, Part A

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The physical-chemical stage of marginal filters in minor rivers of the White Sea catchment area by the example of the Umba River, flowing to Kandalaksha Gulf, has been explored. Application of the method of physical-chemical modeling on the basis of field data allowed establishing migration forms of a number of elements in the "river-sea" system and deposition of solid phases when mixing waters. The mixing of river and sea water is accompanied by the sedimentation of predominantly goethite, hydromuscovite, and hydroxylapatite. Sediments in mixing river and sea waters were found to be mainly composed by goethite, hydromuscovite, and hydroxylapatite. The research has added to the knowledge of the role of the abiotic part in the marginal filters of small rivers in the Arctic.

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Physicochemical modeling of the behavior of microelements (As, V, Cr, Co, and Hg) under the mixing of riverine and marine waters (the Razdol’naya River-Amur Bay System)

Cited by 3 publications

References 8 publications

Physical and Chemical Modeling of the Composition of River Waters Affected by Technogenic Sources(Angara River, Baikal Region)

Physical and Chemical Modeling of the Composition of River Waters Affected by Technogenic Sources(Angara River, Baikal Region)

Comparison of controlling mechanisms of flocculation processes in estuaries

Physical-chemical modeling of elements' behavior in mixing sea and fresh waters of minor rivers in the White Sea catchment area

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