A systematic review of phosphogypsum recycling industry based on the survey data in China – applications, drivers, obstacles, and solutions

Environmental Impact Assessment Review, Год журнала: 2023, Номер 105, С. 107405 - 107405

Опубликована: Дек. 27, 2023

Язык: Английский

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The treatment of phosphogypsum leachate is more urgent than phosphogypsum

Environmental Research, Год журнала: 2024, Номер 262, С. 119849 - 119849

Опубликована: Авг. 27, 2024

Язык: Английский

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Soil Contamination by Heavy Metals and Radionuclides and Related Bioremediation Techniques: A Review

Soil Systems, Год журнала: 2024, Номер 8(2), С. 36 - 36

Опубликована: Март 22, 2024

The migration of heavy metals and radionuclides is interrelated, this study focusses on the interaction complex influence various toxicants. rehabilitation radioactively contaminated territories has a character based scientifically supported measures to restore industrial, economic, sociopsychological relations. We aim for achievement pre-emergency levels hygienic norms radioactive contamination output products. This, in its sum, allows further economic activity these without restrictions basis natural actions autoremediation. Biosorption technologies bacterial biomass remain promising direction remediation soils with that help immobilise consolidate contaminants. A comprehensive understanding biosorption capacity preparations selection more effective techniques elimination contaminants, as well overcoming differences between laboratory results industrial use. Observation monitoring make it possible evaluate process identify regions disturbed balance harmful substances. soil application phosphogypsum, by-product chemical industry, bioremediation processes considered.

Язык: Английский

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Rare earth elements and uranium in Minjingu phosphate fertilizer products: Plant food for thought

Resources Conservation and Recycling, Год журнала: 2024, Номер 207, С. 107694 - 107694

Опубликована: Май 14, 2024

Minjingu phosphate ore is Tanzania's sole domestic supply of phosphorus (P). The contains medium to high concentrations naturally occurring P2O5 (20–35 %) and relevant uranium rare earth elements (REEs) are also suspected be present. Currently, neither nor REEs recovered. They either end up in mine tailings or spread across agricultural soils with fertilizer products. This work provides a first systematic review the REE that can expected different layers ore, way presently processed, as well discussion on alternative processing pathways uranium/REE recovery. study analyzed ten distinct layers, four tailings, five intermediate final mineral products from plant located northern Tanzania. results confirm lesser degree, indeed elevated if compared other ores. does not identify significant risk resulting this. development techno-economic solutions for more comprehensive utilization is, however, strongly encouraged suggestions such processes provided.

Язык: Английский

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Effect of HPO42− and brushite on gypsum reactivity and implications for utilization of phosphogypsum in plaster production

Journal of Cleaner Production, Год журнала: 2024, Номер 451, С. 142013 - 142013

Опубликована: Март 29, 2024

The implementation of a sustainable development strategy holds the potential to enhance productivity, profitability, and overall efficiency by leveraging by-products from other industries. In plaster manufacturing substitution natural gypsum with synthetic is worth exploring. Phosphogypsum (PG) represents significant fraction production, arising as by-product phosphoric acid manufacturing. However, presence impurities in PG, particularly phosphorus, poses challenges its use material. To identify phases present quantify their occurrences understand effects on dehydration hydration processes, our study aimed examine simplified models. These models are specifically designed provide insights into underlying mechanisms governing reactivity hemihydrate. Pure brushite were synthesized, mechanical mixing was carried out explore how affects characteristics gypsum. Additionally, solid solution Ca(SO4)1-x(HPO4)x·2H2O, where 0 < x 1, prepared characterize syncrystallized HPO42− well this impurity typical cases. synthesized materials underwent physical chemical characterization using SEM, XRD, IR spectroscopy, DSC, pH conductivity measurements, ion chromatography. results demonstrated that ions can substitute for sulfate form solutions. maximum quantity lattice approximately 10%, leading crystallization sand rose shape rather than needle crystals. As concentration increases, new phase known ardealite (Ca(SO4)1-x(HPO4)x·2H2O) 0.42 0.54 emerges, followed (CaHPO4·2H2O). During calcination at 160 °C, mixture monetite formed exhibits different properties compared counterpart. ions, transformation anhydrite III II occurred higher temperatures pure calcined samples indicate products caused delay hydration, observed temperature °C. At temperature, begins crystallize, it characterized inert nature, exhibiting no water. This explains decrease setting times rises. Moreover, induced process. Our research revealed adjusting mitigate retarding effect associated impurity, suggesting an industrial tendency lowest possible during process PG containing phosphate impurity. addition, we have water lower values significantly accelerate times.

Язык: Английский

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Properties Enhancement of Asphalt Mortar Incorporating Phosphogypsum Based on Surface Activation

Case Studies in Construction Materials, Год журнала: 2025, Номер unknown, С. e04251 - e04251

Опубликована: Янв. 1, 2025

Язык: Английский

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The phosphorus negotiation game (P-Game): first evaluation of a serious game to support science-policy decision making played in more than 20 countries worldwide

Discover Sustainability, Год журнала: 2025, Номер 6(1)

Опубликована: Янв. 2, 2025

Environmental negotiations are complex, and conveying the interaction between science policy in traditional teaching methods is challenging. To address this issue, innovative educational approaches like serious gaming role-playing games have emerged. These allow students to actively explore roles of different stakeholders environmental decision-making weigh for instance sometimes conflicting UN Sustainable Development Goals or other dilemmas. In work phosphorus negotiation game (P-Game) first time introduced. We present initial quantitative qualitative findings derived from engaging 788 at various academic levels (Bachelor, Master, PhD, Postdoc) across three continents spanning 22 countries. Quantitative results indicate that female participants MSc benefitted most significantly P-Game, with their self-reported knowledge about science/practice increasing by 71–93% (overall), 86–100% (females), 73–106% (MSc general). Qualitative reveal P-Game can be smoothly conducted diverse cultural backgrounds. Moreover, highly value participation which completed just 2–3 h. This not only encourages active engagement among but also provides valuable insights into complex issues associated global production. strongly believe underlying methodology described here could used topics.

Язык: Английский

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A review of the suitability and performance of phosphogypsum as a material for road base and subbase construction

Resources Conservation and Recycling, Год журнала: 2025, Номер 215, С. 108120 - 108120

Опубликована: Янв. 6, 2025

Язык: Английский

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Selective extraction of uranium from acid leachate of Minjingu rock phosphate

Hydrometallurgy, Год журнала: 2025, Номер unknown, С. 106448 - 106448

Опубликована: Фев. 1, 2025

Язык: Английский

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Efficient Electrochemical Recovery of Phosphate from Phosphogypsum Leachate for Lithium-Ion Battery Cathode Application

ACS ES&T Engineering, Год журнала: 2025, Номер unknown

Опубликована: Март 2, 2025

Язык: Английский

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