Heavy metal exchange processes in sediment-water systems

Ramamoorthy, S.; Rust, Brian R.

doi:10.1007/bf02430670

Cited by 75 publications

(24 citation statements)

References 16 publications

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“…Fine-grained top layers of stream sediments have been used to study metal contamination in the vicinity of landfills, since metals generally accumulate on smaller grain fractions of sediment because of the higher surface area-to-grain size ratio (Gibbs, 1973;Harding and Brown, 1978;Ramamoorthy and Rust, 1978;Sinex and Helz, 1981;Rule, 1986;Yanful et al, 1988;Mantei and Coonrod 1989). Therefore, the mineralogy of the material used in the landfill controls the possibility of pollutant escape in the environment (Hermanns Stengele and Plötze, 2000).…”

Section: Discussionmentioning

confidence: 99%

Heavy Metals in Stream Sediments Affected by a Landfill and Associated Impact on Groundwater Quality

Koutsopoulou¹,

Tsolis-Katagas²,

Papoulis³

2017

geosociety

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Section: Discussionmentioning

confidence: 99%

Heavy Metals in Stream Sediments Affected by a Landfill and Associated Impact on Groundwater Quality

Koutsopoulou¹,

Tsolis-Katagas²,

Papoulis³

2017

geosociety

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“…Trace elements As, Cu, Zn and Pb showed elevated concentrations in the stream sediments. Enrichment of metals in stream sediments caused by various contamination sources have been reported (Ramamoorthy andRust, 1978, Rule, 1986). Studies have shown elevated concentrations of Cu, Pb, Zn, Cd, Ag, and Ba in stream sediments affected by landfills and water treatment facilities Coonrod 1989, Mantei andFoster 1991).…”

Section: XLVII No 2 -976mentioning

confidence: 99%

Environmental assessment of contaminants in a downstream area of a landfill

et al. 2017

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Therefore, the evaluation of environmental risks associated with a landfill and the effect of landfill surface runoff was investigated. Soil samples were collected in the downstream area of the waste disposal site and their mineralogy was studied. An appraisal of the heavy metal contamination in the area was attempted. Top layers of sediments seem to interact with chemically modified surface runoff waters from the landfill. Heavy metals such as As and Pb were in significant concentrations in the sediments within a distance of 200 m from the site. Anions such as chloride, sulphate and phosphate adsorbed on clay minerals suggest the interaction of sediments with surface runoff from the waste disposal site. Inorganic parameters NH4 + and NO2 - in surface water samples are above or slightly below the guidelines recommended by EE and WHO. The results indicated that environmental monitoring of the landfill is considered essential.

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“…Concomitantly, the equilibria of carbonate and hydroxide complexes are controlled by pH (Ramamoorthy 1978). Calcium, magnesium and iron can also compete with trace metals for humic and fulvic acids.…”

Section: Watershed Characteristicsmentioning

confidence: 99%

Model for instream regulation of radioisotopes and heavy metals in riverine waters subjected to a uranium mill discharge

Holloran¹

1982

Hydrobiologia

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In the Athabaska sandstone region of northern Saskatchewan, mining and milling of uranium-bearing ore is subjecting, and will continue to subject, surface waters to inputs of soluble heavy metals and uranium and thorium decay series radioisotopes. A mathematical simulation model was developed to assess the role of riverine sediments in regulating soluble concentrations of heavy metals and radioisotopes released to the environment through treated mining and milling process effluents. Specific elements studied included As, Ni, Pb, U, and Ra-226. The model considered that diffusion into sediment porewater and adsorption by sediment particulates from sediment porewater were the two dominant mechanisms regulating sediment loading. Experiments indicated that the equilibrium adsorption behaviour of the heavy metals and radioisotopes studied could be adequately explained using a linear adsorption isotherm, over the range of concentrations expected in the environment. Experimentally determined linear isotherm slopes ranged from 200 ml g-l to 21 000 ml g-l. Diffusion into the effective depth of the sediments (20 cm) was modelled using a quadratic (second order) driving force and a corresponding mass transfer coefficient. The model coefficients were calibrated using field and laboratory data. Results of the modelling suggested that the sediments have a small effect on instream concentrations during the active phases of mining and milling. The sediments were predicted to accumulate sufficient adsorbed mass, during the operational phase of mining and milling, to act as a distributed instream source after completion of milling activities. The significance of this post-operational source was a function of the initial effluent loading, elapsed time and site specific river characteristics.

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Heavy metal exchange processes in sediment-water systems

Cited by 75 publications

References 16 publications

Heavy Metals in Stream Sediments Affected by a Landfill and Associated Impact on Groundwater Quality

Heavy Metals in Stream Sediments Affected by a Landfill and Associated Impact on Groundwater Quality

Environmental assessment of contaminants in a downstream area of a landfill

Model for instream regulation of radioisotopes and heavy metals in riverine waters subjected to a uranium mill discharge

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