Research Article: Assessing the impact of coal ash exposure on soil microbes in the Dan River

Shin, Ju‐Young; Natanson, Alanna; Khun, Joelisa; Odorizzi, Nicholas; DeCreny-Jackson, Jada; Fowowe, Helen; Jackson, C. R.; Springthorpe, Sarah; Rhodes, Taylor; Lutz, Holland; Askey, Jessica; Aleman, Laura; Ciccolella, Amy; Wesley, Bryce; Lewis, Kaitlin; Kuppinger, Dane Mitchell; DeFord-Watts, Laura

doi:10.1893/bios-d-16-00006.1

Cited by 8 publications

(3 citation statements)

References 37 publications

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“…The ecotoxicological impacts of CCR on aquatic systems have been documented as early as 1972, when the collapse of a retaining dyke released CCR effluent from an impoundment into the Clinch River, VA . Other examples of documented CCR-impacted aquatic ecosystems include the Belews and Hyco reservoirs, NC, ,, the Martin Lake reservoir, TX, , Pigeon River and Lake, PA, , the Emory River, TN, , the Dan River, NC, , and the McCoy Branch stream, TN and groundwater aquifers, for example, the Savannah River D-area, SC, the Columbia Power Plant site in Portage, WI, the Pines Superfund site, IN, the Battlefield Golf course in Chesapeake, VA, and a CCR fill site in Gambrills, MD . Ecotoxicological effects on surface waters include overall declines in population numbers and diversity of aquatic organisms, as well as toxic effects on organisms such as fish. − These effects have been attributed to chemical changes such as increases in pH and inputs of trace elements and to physical changes such as loss of habitat and increased turbidity.…”

Section: Impacts Of Ccr In Environmental Systemsmentioning

confidence: 99%

“…With respect to population and community-level effects, there is little data on how these effects are related to the accumulation of trace elements in the food chain, physical changes to habitat, and direct exposure to chemical inputs. Based on previous studies, decreased diversity and abundance of vertebrates and invertebrates, including fish and benthic fauna, as well as changes in the density, biodiversity, and enzymatic activity of microbes have been observed. ,, A few studies have documented evidence for changes in aquatic community structure, for example, a decrease in sensitive indicator species and an increase in species with a higher tolerance for pollutants. ,, There have been indications of shifts in diet for organisms, which have been postulated to be a result of decreases in resource abundance, suggesting there could be changes in food web dynamics as a result of CCR exposure …”

Section: Impacts Of Ccr In Environmental Systemsmentioning

confidence: 99%

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Environmental Impacts of Coal Combustion Residuals: Current Understanding and Future Perspectives

Deonarine

Schwartz

Ruhl

2023

Environ. Sci. Technol.

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On-site solid-waste impoundments, landfills, and receiving water bodies have served as long-term disposal sites for coal combustion residuals (CCRs) across the United States for decades and collectively contain billions of tons of CCR material. CCR components include fine particulate material, minerals, and trace elements such as mercury, arsenic, selenium, lead, etc., which can have deleterious effects on ecosystem functioning and public health. Effects on communities can occur through consumption of drinking water, fish, and other aquatic organisms. The structural failure of impoundments, water infiltration, leakage from impoundments due to poor construction and monitoring, and CCR effluent discharges to water bodies have in the past resulted in harmful environmental impacts. Moreover, the risks posed by CCRs are present to this day, as coal continues to account for 11% of the energy production in the United States. In this Critical Review, the legacy of CCR disposal and the concomitant risks posed to public health and ecosystems are assessed. The resiliency of CCR disposal sites in the context of increased frequency and intensity of storm events and other hazards, such as floods and earthquakes, is also evaluated. We discuss the current state of knowledge on the environmental fate of CCRderived elements, as well as advances in and limitations of analytical tools, which can improve the current understanding of CCR environmental impacts in order to mitigate the associated risks. An assessment of the 2015 Coal Ash Final Rule is also presented, along with needs to improve monitoring of CCR disposal sites and regulatory enforcement.

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Section: Impacts Of Ccr In Environmental Systemsmentioning

confidence: 99%

Section: Impacts Of Ccr In Environmental Systemsmentioning

confidence: 99%

Environmental Impacts of Coal Combustion Residuals: Current Understanding and Future Perspectives

Deonarine

Schwartz

Ruhl

2023

Environ. Sci. Technol.

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“…Despite the geogenic occurrence of PTEs, anthropogenic interferences, including mining and smelting (Knabb et al, 2016;Boente et al, 2022), the extended application of untreated organic wastes (e.g., sewage sludge and compost) and mineral fertilizers (e.g., phosphate fertilizers) application to arable lands (Bisht and Chauhan, 2020), and coal ash deposition (Shin et al, 2017) often release enormous contents in soils. Industrialization, war, and intensification of agriculture have left a legacy of soil contamination throughout, with 80,000 sites (in Australia), 1,300 in the United States, 3 million in Europe and the western Balkans, and 16% in China's soils representing the hot spot of global polluted sites (FAO/ UN, 2018).…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of As, Cd, Pb, and Zn hyperaccumulation by plants and their effects on soil microbiome in the rhizosphere

Asare

Száková

Tlustoš

2023

Front. Environ. Sci.

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Excess potentially toxic elements (PTEs), including arsenic (As), cadmium (Cd), lead (Pb), and zinc (Zn), above permissible limits in the environment, have detrimental effects on trophic levels. Hence, imperative to devise advertent measures to address this situation, especially in the soil ecosystem: the major reservoir of many PTEs. Using aerial plant parts (shoot) to accumulate As, Cd, Pb, and Zn - hyperaccumulators are considered a permanent approach to PTE removal from soils. This communication expatiated the principles that govern the hyperaccumulation of plants growing on As, Cd, Pb, and Zn-contaminated soils. The contribution of soil microbial communities during hyperaccumulation is well-elaborated to support the preference for this remediation approach. The study confirms a flow direction involving PTE uptake–translocation–tolerance–detoxification by hyperaccumulators. Rhizosphere microbes exhibit a direct preference for specific hyperaccumulators, which is associated with root exudations, while the resultant formation of chelates and solubility of PTEs, with soil physicochemical properties, including pH and redox potential, promote uptake. Different compartments of plants possess specialized transporter proteins and gene expressions capable of influx and efflux of PTEs by hyperaccumulators. After PTE uptake, many hyperaccumulators undergo cellular secretion of chelates supported by enzymatic catalysis and high transport systems with the ability to form complexes as tolerance and detoxification mechanisms. The benefits of combining hyperaccumulators with beneficial microbes such as endophytes and other rhizosphere microbes for PTE removal from soils are vital in enhancing plant survival and growth, minimizing metal toxicity, and supplying nutrients. Inoculation of suitable rhizosphere microbes can promote efficient cleaning of PTEs contaminated sites utilizing hyperaccumulator plants.

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Water quality implications of the neutralization of acid mine drainage with coal fly ash from India and the United States

Weinberg

Coyte

Wang

et al. 2022

Fuel

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Research Article: Assessing the impact of coal ash exposure on soil microbes in the Dan River

Cited by 8 publications

References 37 publications

Environmental Impacts of Coal Combustion Residuals: Current Understanding and Future Perspectives

Environmental Impacts of Coal Combustion Residuals: Current Understanding and Future Perspectives

Mechanisms of As, Cd, Pb, and Zn hyperaccumulation by plants and their effects on soil microbiome in the rhizosphere

Water quality implications of the neutralization of acid mine drainage with coal fly ash from India and the United States

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