Study of trace metal leaching from coals into seawater

Cabon, Jean-Yves; Burel, Laure; Jaffrennou, Cathy; Giamarchi, Philippe; Bautin, François

doi:10.1016/j.chemosphere.2007.04.018

Cited by 23 publications

(8 citation statements)

References 19 publications

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“…While several metals were elevated in coal treatments in comparison with controls, the magnitude of this increase due to leaching was minimal and only the relatively low toxicity element cobalt was detected at concentrations greater than ANZECC guidelines 39 . Our results are consistent with previous studies that showed coal generally does not leach toxic levels of trace metals 10 11 . Though not measured in the present study, leaching of PAHs from coal is also generally considered low and to have very low bioavailability 3 9 40 , suggesting that the measured adverse effects in the present study were primarily due to physical mechanisms.…”

Section: Discussionsupporting

confidence: 93%

“…Similarly, direct pathways for organism harm by coal are likely to include suspended particles, increased light attenuation from turbidity, and smothering of sessile benthic organisms, leading to reduced photosynthesis and feeding 9 . In addition, coal may contain contaminants such as polycyclic aromatic hydrocarbons (PAHs) and trace metals, and a fraction of these contaminants can be released from coal dust into the surrounding seawater 9 10 11 . Metals can be toxic to marine species by disrupting enzyme activity and membrane structure, but the effects of metals are highly dependent on speciation and bioavailability 12 .…”

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confidence: 99%

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Simulated coal spill causes mortality and growth inhibition in tropical marine organisms

Berry

Hoogenboom

Flores

et al. 2016

Sci Rep

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Coal is a principal fossil fuel driving economic and social development, and increases in global coal shipments have paralleled expansion of the industry. To identify the potential harm associated with chronic marine coal contamination, three taxa abundant in tropical marine ecosystems (the coral Acropora tenuis, the reef fish Acanthochromis polyacanthus and the seagrass Halodule uninervis) were exposed to five concentrations (0–275 mg coal l−1) of suspended coal dust (<63 μm) over 28 d. Results demonstrate that chronic coal exposure can cause considerable lethal effects on corals, and reductions in seagrass and fish growth rates. Coral survivorship and seagrass growth rates were inversely related to increasing coal concentrations (≥38 mg coal l−1) and effects increased between 14 and 28 d, whereas fish growth rates were similarly depressed at all coal concentrations tested. This investigation provides novel insights into direct coal impacts on key tropical taxa for application in the assessment of risks posed by increasing coal shipments in globally threatened marine ecosystems.

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Section: Discussionsupporting

confidence: 93%

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confidence: 99%

Simulated coal spill causes mortality and growth inhibition in tropical marine organisms

Berry

Hoogenboom

Flores

et al. 2016

Sci Rep

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“…However, it has been demonstrated that Mn accumulation in coastal marine phytoplankton can be prevented by high concentrations of metals such as Cu or Cd [ 42 ]. A study on three types of South African coal, showed that the leaching of metals such as Cu, Cr, Fe, and Pb in seawater at a pH level of 8 was insignificant due to the presence of humic substances in coal or seawater, which prevented them moving from coal to seawater [ 43 ]. At the same time, the high solubility of the compounds Ni and Mn was noted, and the that leaching efficiency is greatly reduced for coal with a high calcite content.…”

Section: Coal Dust Its Properties and Behavior In Seawatermentioning

confidence: 99%

Effects of coal microparticles on marine organisms: A review

Tretyakova

Vardavas

et al. 2021

Toxicology Reports

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“…Hence, weathered Raša coal chemistry could be indicative of today's seawater intrusion (see Figure 4). On the basis of experiments , Cabon et al (2007) revealed that most hazardous trace metals were not released from coal into seawater and, on the contrary would be likely removed from seawater solutions in the presence of coal having a high calcite content. The Sr/Ba ratio values, calculated for the analysed water samples no.…”

Section: Resultsmentioning

confidence: 99%

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2020

MGPB

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Raša coal, mined on the Istrian Peninsula (NW Croatia) for nearly 400 years up to 1999, is notable for having superhigh organic sulfur, and high levels of selenium, uranium, vanadium, and molybdenum. Selenium is the poison responsible for the widespread loss of cattle and sheep. It is essential to human health in trace amounts, but higher concentrations can be harmful. An estimated 4.4Mt. of coal remains underground within marine carbonate rocks. The study area belongs to the coastal karst of the Adriatic Sea. Several abandoned coalmine discharges (CMDs) were released into local streams and the Raša Bay for decades. Therefore, the water quality of a natural karst spring (Fonte Gaja), the Raša Bay seawater, municipal wastewater, and the Raša CMDs were investigated, focusing on sulfur, selected metal(loid)s (major, minor, and trace), radioactivity, and cytotoxicity. The Fonte Gaja spring water, unrelated to the Raša CMD, served as a reference. Its values of Se, U, V, and Mo (µg/L) were as follows: 1.09, 0.75, 1.37, and 2.04, respectively. However, the respective levels (µg/L) were increased in the rest of the water samples as follows: 10.9, 10.8, 4.60, and 33.1. Water sulfate levels were low though. Total beta activities of the CMDs and Raša Bay water were 235 and 1320 Bq/m 3 , respectively, below the guideline level of 2000 Bq/m 3. The cytotoxicity of water samples on the RTG-2 fish cells was not statistically significant. The large volumes of water involved mean the transport of rather large amounts of Se and U, and their deposition in the Adriatic Sea. Due to the complexity of the karst hydrogeology, knowledge of Se and U circulation patterns is highly needed.

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Study of trace metal leaching from coals into seawater

Cited by 23 publications

References 19 publications

Simulated coal spill causes mortality and growth inhibition in tropical marine organisms

Simulated coal spill causes mortality and growth inhibition in tropical marine organisms

Effects of coal microparticles on marine organisms: A review

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