Assessment of natural radionuclides mobility in a phosphogypsum disposal area

Pérez-Moreno, S.M.; Gázquez, M.J.; Pérez‐López, Rafael; Vioque, I.; Bolı́var, J.P.

doi:10.1016/j.chemosphere.2018.07.193

Cited by 42 publications

(14 citation statements)

References 41 publications

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“…PG discharge into the sea has been practiced in Tunisia with dramatic consequences to marine ecosystems [2]. PG contains toxic components harmful to ecosystems and human health; these include heavy metals and radionuclides [1]. PG use as a fertilizer has also been limited by its toxic effect on plant growth and development and earthworms [3,4,5,6].…”

Section: Discussionmentioning

confidence: 99%

“…When using rock phosphate as raw material for the production of phosphoric acid, phosphogypsum (PG) is the main waste generated. Phosphogypsum, currently considered a NORM (naturally occurring radioactive material), contains numerous hazardous materials such as natural radionuclides and heavy metals [1]. Management of phosphogypsum is challenging in numerous countries.…”

Section: Introductionmentioning

confidence: 99%

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Metagenomic Insights and Genomic Analysis of Phosphogypsum and Its Associated Plant Endophytic Microbiomes Reveals Valuable Actors for Waste Bioremediation

Mefteh

Bouket

Daoud³

et al. 2019

Microorganisms

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The phosphogypsum (PG) endogenous bacterial community and endophytic bacterial communities of four plants growing in phosphogypsum-contaminated sites, Suaeda fruticosa (SF), Suaeda mollis (SM), Mesembryanthmum nodiflorum (MN) and Arthrocnemum indicum (AI) were investigated by amplicon sequencing. Results highlight a more diverse community of phosphogypsum than plants associated endophytic communities. Additionally, the bacterial culturable communities of phosphogypsum and associated plant endophytes were isolated and their plant-growth promotion capabilities, bioremediation potential and stress tolerance studied. Most of plant endophytes were endowed with plant growth-promoting (PGP) activities and phosphogypsum communities and associated plants endophytes proved highly resistant to salt, metal and antibiotic stress. They also proved very active in bioremediation of phosphogypsum and other organic and inorganic environmental pollutants. Genome sequencing of five members of the phosphogypsum endogenous community showed that they belong to the recently described species Bacillus albus (BA). Genome mining of BA allowed the description of pollutant degradation and stress tolerance mechanisms. Prevalence of this tool box in the core, accessory and unique genome allowed to conclude that accessory and unique genomes are critical for the dynamics of strain acquisition of bioremediation abilities. Additionally, secondary metabolites (SM) active in bioremediation such as petrobactin have been characterized. Taken together, our results reveal hidden untapped valuable bacterial actors for waste remediation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metagenomic Insights and Genomic Analysis of Phosphogypsum and Its Associated Plant Endophytic Microbiomes Reveals Valuable Actors for Waste Bioremediation

Mefteh

Bouket

Daoud³

et al. 2019

Microorganisms

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“…Operationally defined fractionation of elements in various environmental samples has been conducted using sequential leaching methods. Examples are river sediments [13][14][15], soils [16][17][18], coal ash [4,19,20], green liquor dregs [21], black shale [22], phosphogypsum [23], sewage sludges [24][25][26], and mine wastes [27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Fractionation of Metal(loid)s in Three European Mine Wastes by Sequential Extraction

2022

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Mine waste can constitute an environmental hazard, especially when poorly managed. Environmental assessment is essential for estimating potential threats and optimizing mine waste management. This study evaluated the potential environmental risk of sulfidic mine waste samples originating from the Neves Corvo Mine, Portugal, and the closed Freiberg mining district, Germany. Metal(loid)s in the waste samples were partitioned into seven operationally defined fractions using the Zeien and Brummer sequential extraction scheme. The results showed similar partitioning patterns for the elements in the waste rock and tailing samples from Neves Corvo Mine; most metal(loid)s showed lower mobility, as they were mainly residual-bound. On the contrary, the Freiberg tailing sample had considerably elevated (24–37%) mobile fractions of Zn, Co, Cd, and Mn. The majority of Fe (83–96%) in all samples was retained in the residual fractions, while Ca was highly mobile. Overall, Pb was the most mobile toxic element in the three samples. A large portion of Pb (32–57%) was predominantly found in the most mobilizable fractions of the studied waste samples. This study revealed that the three mine wastes have contamination potential for Pb and Zn, which can be easily released into the environment from these waste sources.

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“…Phosphogypsum (FY) is a byproduct generated in the production of phosphoric acid by the wet process (the most common route for its production using sulfuric acid), and contains significant concentrations of impurities (heavy metals, Fluorine, P2O5, low pH, etc.) and natural radionuclides from 238 U-series (Bolívar et al, 2009;Haque et al, 2020;Huang et al, 2020;Pérez-López et al, 2010;Pérez-Moreno et al, 2018). About 85 % of FY worldwide production (more than 300 Mt every year) ends up stored in regular open stacks, sometimes even near built-up or ecologically sensitive areas, with enormous risks for both human health and the environment (Bolivar et al, 2009;Cuadri et al, 2014;Monat et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Phosphogypsum as additive for foamed bitumen manufacturing used in asphalt paving

Cuadri¹,

Pérez-Moreno

Altamar

et al. 2021

Journal of Cleaner Production

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Assessment of natural radionuclides mobility in a phosphogypsum disposal area

Cited by 42 publications

References 41 publications

Metagenomic Insights and Genomic Analysis of Phosphogypsum and Its Associated Plant Endophytic Microbiomes Reveals Valuable Actors for Waste Bioremediation

Metagenomic Insights and Genomic Analysis of Phosphogypsum and Its Associated Plant Endophytic Microbiomes Reveals Valuable Actors for Waste Bioremediation

Fractionation of Metal(loid)s in Three European Mine Wastes by Sequential Extraction

Phosphogypsum as additive for foamed bitumen manufacturing used in asphalt paving

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