Experimental study on release of heavy metals in sediment under hydrodynamic conditions

Shi, Xianluo; Zhang, Wei

doi:10.1088/1755-1315/208/1/012040

Cited by 7 publications

(10 citation statements)

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“…In these circumstances, terrestrial and submerged plants are most likely the sources of TOC in sediments [41]. Therefore the inlet area has the lowest TOC in sediments due to the higher energy of flowing water [46]. Better hydrodynamic conditions of the lake such as resuspension, waves, and higher energy (as drinking water pumping) could be the possible reasons of lower TOC accumulation in sediments [41,46].…”

Section: Toc In Sediments and Their Relationship With Heavy Metalsmentioning

confidence: 99%

Pollution status, spatial distribution and ecological risk of heavy metals in sediments of a drinking water lake in South Eastern China

Uddin

Peng

et al. 2021

Environmental Pollutants and Bioavailability

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This study investigates the pollution status, spatial distribution of heavy metals including Cr, Mn, Ni, Cu, Zn, As, Cd and Pb, in sediments from the Longhu Lake, and evaluates possible ecological risk of these metals. Average concentrations of Cu, Zn, Cd and Pb were 2.1, 3.5, 8.0 and 2.5 times higher than Grade I Chinese soil quality standard respectively. The geo-accumulation index indicates that the lake sediments are moderate to heavily contaminated by Zn, Cd and Pb, which may have higher toxic effects than other metals. The potential ecological risk factor (E i r) suggests low risk to aquatic organisms except for Cd which has a considerable risk to aquatic biota. Spearman correlation and principal component analysis suggest that Mn, Zn, Cd and Pb possibly having similar anthropogenic sources and behaviors in the lake. Overall, this study suggests that anthropogenic inputs are from local point and non-point sources, runoff and atmospheric deposition.

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Section: Toc In Sediments and Their Relationship With Heavy Metalsmentioning

confidence: 99%

Pollution status, spatial distribution and ecological risk of heavy metals in sediments of a drinking water lake in South Eastern China

Uddin

Peng

et al. 2021

Environmental Pollutants and Bioavailability

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“…At present, a large amount of heavy metals has entered into rivers, lakes, and other water bodies (Shi & Zhang 2018;Zhang et al 2018). All types of water bodies are an important connection between the geosphere and biosphere, especially playing a major role in transporting heavy metal pollutants.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with the hydrostatic condition, the heavy metals in the sediment are more likely to migrate under dynamic water conditions (Shi & Zhang 2018). Once the water environmental conditions change, the dynamic equilibrium between the sediment and the water interface will be broken, so that the heavy metals in the sediment will be transferred and transformed and released to the overlaying water (Zhang et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…The natural factors mainly include hydrodynamics (e.g., wind wave, storm, tide (Lin et al 2019;Lu et al 2019), and water flow), chemical processes, and bioturbation (Song et al 2015). The man-made factors mainly include ship transportation (Superville et al 2014), sand mining, dredging operations, fishing, and other human activities (Shi & Zhang 2018). Meanwhile, sediments are also complex and diverse, with different physical and chemical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Meanwhile, sediments are also complex and diverse, with different physical and chemical properties. A large number of studies have found that the release of heavy metals in the sediment is synthetically affected by environmental conditions, such as temperature, pH, salinity, dissolved oxygen, redox potential, and other factors (Jafarabadi et al 2018;Shi & Zhang 2018).…”

Section: Introductionmentioning

confidence: 99%

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Adsorption and migration of heavy metals between sediments and overlying water in the Xinhe River in central China

Zhao

Yang

Dai

et al. 2021

Water Science and Technology

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Long-term polluted rivers often lead to the accumulation of heavy metals in sediments. Anthropogenic activities or biological disturbances break the adsorption balance, causing them to return from the bottom mud to the overlying water and change the aquatic environment. In order to understand the variation of heavy metals between sediments and river water, we collected the riverbed sediments in the polluted Xinhe River and carried out static continuous infiltration and dynamic uninterrupted disturbance experiments. The leaching experiment shows that the absorbability of Cd and Pb is stronger than Cr in the sediment; at the same time, the properties of the medium have a great influence on the adsorption of heavy metals. The disturbance can prompt heavy metals in the sediment to resuspend into the overlying water. The impact is the greatest during the first 12 h, and the influence degree is stronger in the relatively static water than in the moving river. In addition, pH and other factors have different degrees of influence on the desorption of heavy metals.

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A Comprehensive Review on Heavy Metal Toxicity in Coastal Sediments

Murthy,

Jagadeesha Pai,

Salmataj

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Heavy metal toxicity is becoming a growing environmental concern worldwide. The estuary’s surface waters and sediments are finally being transported to the coastal areas. During this transportation, the water and sediments carry numerous elements. The essential elements like nutrition are nitrates, phosphates, silicates, and sulphates, which are required for aquatic life, and non-essential elements contribute to pollution. The input of these essential and non-essential elements is being contributed by nature and anthropogenic activities. Due to the increase in urbanization and anthropogenic activities like agricultural, industrial, thermal power plants, dye factories, inland fisheries, small and significant scale industries, as well as recreational activities, are the sources of heavy metal toxicity. The toxic heavy metals, including mercury, cadmium, chromium, and lead, are leading to biological toxicity. Environmental standards are being modified due to increasing concerns. However, naturally occurring heavy metals and metalloids are drawn from parent rocks and absorbed by aquatic organisms, such as benthic organisms, which fix some heavy metal ions. Flora and fauna also absorb these ions, reducing their concentration. However, due to climatic factors like temperature and pH, these metal ions get adsorbed on the surface of the sediments. During hydrodynamic forces, they get released back into the water and vary seasonally.

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Experimental study on release of heavy metals in sediment under hydrodynamic conditions

Cited by 7 publications

References 0 publications

Pollution status, spatial distribution and ecological risk of heavy metals in sediments of a drinking water lake in South Eastern China

Pollution status, spatial distribution and ecological risk of heavy metals in sediments of a drinking water lake in South Eastern China

Adsorption and migration of heavy metals between sediments and overlying water in the Xinhe River in central China

A Comprehensive Review on Heavy Metal Toxicity in Coastal Sediments

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