Distribution of natural radioactivity within an estuary affected by releases from the phosphate industry

Travesi, A.; Gascó, C.; Pozuelo, M.; Palomares, Juan Carlos García; García, Marcos; Villar, Luis

doi:10.1016/s0166-1116(09)70106-2

Cited by 5 publications

(3 citation statements)

References 7 publications

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“…The risks associated with mining, milling and manufacturing of phosphoric acid and phosphate fertilizers have been widely documented at different sites around the world. Solid waste products of the phosphate industry, notably gypsum (CaSO 4 ·2H 2 O), termed phosphogypsum, but also dusts generated during milling, can carry particularly high concentrations of 226 Rn, 210 Pb and 210 Po (e.g., [74,[98][99][100][101][102][103][104][105][106][107][108][109]. Although waste from the phosphate industry has, in some cases, been disposed of in the marine environment (e.g., [101]), elsewhere, most spectacularly in Florida, where the World's largest phosphoric acid industry is centred, huge waste piles (gypstacks) have been generated, creating serious waste management issues.…”

Section: Pb and 210 Po In Mining And Processing Of Phosphatesmentioning

confidence: 99%

210Pb and 210Po in Geological and Related Anthropogenic Materials: Implications for Their Mineralogical Distribution in Base Metal Ores

et al. 2018

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Abstract:The distributions of 210 Pb and 210 Po, short half-life products of 238 U decay, in geological and related anthropogenic materials are reviewed, with emphasis on their geochemical behaviours and likely mineral hosts. Concentrations of natural 210 Pb and 210 Po in igneous and related hydrothermal environments are governed by release from crustal reservoirs. 210 Po may undergo volatilisation, inducing disequilibrium in magmatic systems. In sedimentary environments (marine, lacustrine, deltaic and fluvial), as in soils, concentrations of 210 Pb and 210 Po are commonly derived from a combination of natural and anthropogenic sources. Enhanced concentrations of both radionuclides are reported in media from a variety of industrial operations, including uranium mill tailings, waste from phosphoric acid production, oil and gas exploitation and energy production from coals, as well as in residues from the mining and smelting of uranium-bearing copper ores. Although the mineral hosts of the two radionuclides in most solid media are readily defined as those containing parent 238 U and 226 Ra, their distributions in some hydrothermal U-bearing ores and the products of processing those ores are much less well constrained. Much of the present understanding of these radionuclides is based on indirect data rather than direct observation and potential hosts are likely to be diverse, with deportments depending on the local geochemical environment. Some predictions can nevertheless be made based on the geochemical properties of 210 Pb and 210 Po and those of the intermediate products of 238 U decay, including isotopes of Ra and Rn. Alongside all U-bearing minerals, the potential hosts of 210 Pb and 210 Po may include Pb-bearing chalcogenides such as galena, as well as a range of sulphates, carbonates, and Fe-oxides. 210 Pb and 210 Po are also likely to occur as nanoparticles adsorbed onto the surface of other minerals, such as clays, Fe-(hydr)oxides and possibly also carbonates. In rocks, unsupported 210 Pb-and/or 210 Po-bearing nanoparticles may also be present within micro-fractures in minerals and at the interfaces of mineral grains. Despite forming under very limited and special conditions, the local-scale isotopic disequilibrium they infer is highly relevant for understanding their distributions in mineralized rocks and processing products.

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Section: Pb and 210 Po In Mining And Processing Of Phosphatesmentioning

confidence: 99%

210Pb and 210Po in Geological and Related Anthropogenic Materials: Implications for Their Mineralogical Distribution in Base Metal Ores

et al. 2018

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“…These deposits are drained by a small tributary which also carries effluent from nearby sewage treatment plants (Elbaz-poulichet et al 1999a). The phosphogypsum wastes (about 10 10 kg) cover an area of approximately 4 • 10 6 m 2 (Travesi et al 1997in Elbaz-Poulichet et al 2000.…”

Section: General Settingmentioning

confidence: 99%

Application of fuzzy logic and data mining techniques as tools for qualitative interpretation of acid mine drainage processes

et al. 2007

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In this article, a set of clustering algorithms based on Fuzzy Logic and Data Mining are applied, allowing to obtain data in the form of linguistic rules and charts about the behaviour of the Tinto and Odiel river estuary (SW Spain) affected by Acid Mine Drainage (AMD). In order to provide researchers with no skills on data mining techniques an easy and intuitive interpretation, we have developed a computer tool based on fuzzy logic that allows immediate qualitative analysis of the data contained in a data from the estuary water chemical analyses, and serves as a contrast to functioning models previously proposed with classical statistics.

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“…Multielemental and isotopic analysis, among other sediment properties, can support the sediment fingerprinting technique, allowing for the identification of sediment sources and the understanding of some features of sediment dynamics within river basins (Koiter et al, 2013;Reese et al, 2019). Natural occurring radionuclides have been used for assessing anthropogenic impacts in river basins and estuaries, such as the releases from the phosphate industry (Travesi et al, 1997), the magnitude and impact of acid mining drainage and industrial effluents (Hierro et al, 2012;Villa et al, 2011), or conventional metal mining activities (Manj� on et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Environmental radioactivity and trace metals in surficial sediments from estuarine systems in Ghana (Equatorial Africa), impacted by artisanal gold-mining

Klubi

Abril

Mantero

et al. 2020

Journal of Environmental Radioactivity

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Distribution of natural radioactivity within an estuary affected by releases from the phosphate industry

Cited by 5 publications

References 7 publications

210Pb and 210Po in Geological and Related Anthropogenic Materials: Implications for Their Mineralogical Distribution in Base Metal Ores

210Pb and 210Po in Geological and Related Anthropogenic Materials: Implications for Their Mineralogical Distribution in Base Metal Ores

Application of fuzzy logic and data mining techniques as tools for qualitative interpretation of acid mine drainage processes

Environmental radioactivity and trace metals in surficial sediments from estuarine systems in Ghana (Equatorial Africa), impacted by artisanal gold-mining

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