Evaluation of the physicochemical, heavy metal and radiological contamination from phosphogypsum discharges of the phosphoric acid production unit on the coast of El Jadida Province in Morocco

Arhouni, Fatima Ezzahra; Hakkar, Mohammed; Ouakkas, Saad; Haneklaus, Nils; Boukhair, Aziz; Nourreddine, Abdelmjid; Benjelloun, Mohammed

doi:10.1007/s10967-023-09079-w

Cited by 6 publications

(2 citation statements)

References 41 publications

(43 reference statements)

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“…Due to the depletion of primary resources, the world has turned to secondary resources such as phosphate ores, sea water, petroleum coke, etc. Approximately 9,700 tpa uranium oxide can be extracted from phosphoric acid ( Beltrami et al, 2013 ; Kawatra and Carlson, 2013 ; Beltrami et al, 2014 ; Arhouni et al, 2023 ; Lammers et al, 2023 ).…”

Section: Introductionmentioning

confidence: 99%

Recovery of uranium from phosphate ore in the Sheikh Habil-Iran mine: part I— multivariable optimization of leaching process using the response surface method

Abdeshahi,

Outokesh,

Nejad

et al. 2023

Front. Chem.

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In this research, the recovery of uranium from the phosphate ore of the Sheikh Habil-Iran mine using flotation/calcination-leaching processes has been investigated. A 75–150 μm phosphate ore particle size, sodium oleate as a collector with a concentration of 2,000 g/ton of rock, pH = 10, and 5 min flotation time were obtained as the optimum parameters of flotation using the reverse method, leading to phosphate ore with a grade of 180 ppm UO2, 36.1% P₂O₅, 7.22% SiO2, and CaO/P₂O₅ = 1.23. The optimum calcination parameters were selected as 100 μm phosphate ore particles size at D80, 900°C temperature, and 2 h heating time, which resulted in phosphate ore with a grade of 173 ppm UO2 and 31.9% P₂O₅. An L/S (liquid to solid ratio) = 5, 3 M sulfuric acid concentration, 80°C temperature, and 5 h leaching time were obtained as the optimum leaching parameters using the response surface methodological approach. The efficiency of uranium recovery from phosphate ore pre-treated by flotation and calcination methods was 84.2% and 75.2%, respectively. The results indicated that flotation has superiority over calcination as a pre-treatment method of phosphate ore in the Sheikh Habil-Iran mine.

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Section: Introductionmentioning

confidence: 99%

Recovery of uranium from phosphate ore in the Sheikh Habil-Iran mine: part I— multivariable optimization of leaching process using the response surface method

Abdeshahi,

Outokesh,

Nejad

et al. 2023

Front. Chem.

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“…a Ukraine (author's results); b China[145][146][147][148][149]; c United States[150][151][152]; d Spain[153,154]; e Brazil[155][156][157]; f India[158][159][160]; g Morocco[161][162][163][164][165]; h Poland[166][167][168][169][170]; i Tunisia[171][172][173][174]; j France[175]; k Greece[176,177]; n.m., not measured.…”

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confidence: 99%

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

Chernysh,

Chubur,

Ablieieva

et al. 2024

Soil Systems

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

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Optimizing phosphoric acid concentrating using microwave technology: Theoretical and empirical model of energy efficiency and P2O5 concentration

Bagoun,

EL Khouakhi,

Chaouki

et al. 2024

Chemical Engineering and Processing - Process Intensification

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Evaluation of the physicochemical, heavy metal and radiological contamination from phosphogypsum discharges of the phosphoric acid production unit on the coast of El Jadida Province in Morocco

Cited by 6 publications

References 41 publications

Recovery of uranium from phosphate ore in the Sheikh Habil-Iran mine: part I— multivariable optimization of leaching process using the response surface method

Recovery of uranium from phosphate ore in the Sheikh Habil-Iran mine: part I— multivariable optimization of leaching process using the response surface method

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

Optimizing phosphoric acid concentrating using microwave technology: Theoretical and empirical model of energy efficiency and P2O5 concentration

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