Grain size and mineralogical characteristics of the stream sediments, east of Abu Zeneima area, southwestern Sinai, Egypt

Ramadan, Randa S.; Gad, Ahmed; Yehia, M.; Dawood, Yehia H.; Kawady, Nilly A.

doi:10.1007/s12517-019-4362-8

Cited by 4 publications

(1 citation statement)

References 16 publications

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“…The entire Paleozoic succession unconformably overlies the Precambrian basement rocks (gneisses and younger granites) and unconformably underlies the Permo-Triassic sandstone and mudstone red beds. The Abu Thora Formation in certain places is capped by basaltic sheets (Mesozoic), and it is also dissected by doleritic and basaltic dykes [34,35].…”

Section: Sample Collection and Preparationmentioning

confidence: 99%

Optimization of Carboniferous Egyptian Kaolin Treatment for Pharmaceutical Applications

et al. 2022

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This paper quantitatively determines the occurrences of potentially toxic elements in Carboniferous kaolin in southwestern Sinai, Egypt. This research describes, in detail, the experimental treatment optimization to be used in pharmaceutical applications. The concentrations of As, Co, Ni, Pb, and V in these kaolin deposits exceed the Permitted Concentrations of Elemental Impurities for oral use in pharmaceutical applications. Herein, six desorbing agents (acetic acid, citric acid, DTPA, EDDS, EDTA, and NTA) were utilized as extracting solutions in batch-wise extractions to select the proper reagents. Parameters such as the pH, the mixing speed and time, and the solid–solution ratio were varied to optimize the extraction conditions. The findings indicate that citric acid and EDTA were effective in the removal of the aforementioned elements. The results reveal that the optimum removal of potentially toxic elements from kaolin can be achieved using citric acid and EDTA concentrations of 0.2 M and 0.1 M, respectively, for the treatment of 5 g of kaolin, under a pH of 4 for citric acid, and a pH of 10 for EDTA. The ideal mixing speed and time are 500 rpm and 6 h, respectively. Using 1:10 S/L of citric acid and EDTA showed removal rates of 100% for all the investigated PTEs. We recommend this treatment for different kinds of kaolin showing various degrees of contamination.

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Section: Sample Collection and Preparationmentioning

confidence: 99%

Optimization of Carboniferous Egyptian Kaolin Treatment for Pharmaceutical Applications

et al. 2022

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Environmental and health impact of current uranium mining activities in southwestern Sinai, Egypt

et al. 2022

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Stream sediments and groundwater samples were collected from the vicinity of El Allouga uranium mine in southwestern Sinai and analyzed for their radionuclides to explore the geochemical dispersion and environmental impact. The radioactivity measurements were performed using γ-ray spectrometry and UV-photometry. Most stream sediments samples have eU concentrations more than the background level. The significant correlations between eU, clay, and organic matter contents reflect possible adsorption of U to the surface of clay and organic matter. The high radionuclide concentrations in the stream sediment are mainly due to contamination from the mining process, and, in some locations, due to rock outcrops weathering. The measured concentrations of U in groundwater samples exceed the Maximum Contamination Level of groundwater U (30 ppb). The lack of correspondence of U concentrations in the country rocks and associated groundwater indicates the high mobility of U and reflects absence of a simple rock/water equilibration. Water resources in the study area have 234U/238U activity ratios with obvious deviations from secular equilibrium. The U isotopic data support that uranium ore body could be locally forming within the rock aquifer at El Allouga area. The calculated external hazard parameter values are higher than the worldwide average in 30% of the studied stream sediment samples; this indicates that people who are exposed to that level of radiation for a lifetime would have an elevated cancer risk. The Annual Effective Dose resulting from U activity concentrations in the studied drinking water is significantly higher than the recommended limit for children and adults. Therefore, the available water resources in the study area are considered unsafe for human consumption.

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Diit Quaternary Stream Sediments, Southern Coast of the Red Sea, Egypt: Potential Source of Ilmenite, Magnetite, Zircon, and Other Economic Heavy Minerals

Fawzy

Ghar

Gaafar

et al. 2022

Mining, Metallurgy & Exploration

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Grain size and mineralogical characteristics of the stream sediments, east of Abu Zeneima area, southwestern Sinai, Egypt

Cited by 4 publications

References 16 publications

Optimization of Carboniferous Egyptian Kaolin Treatment for Pharmaceutical Applications

Optimization of Carboniferous Egyptian Kaolin Treatment for Pharmaceutical Applications

Environmental and health impact of current uranium mining activities in southwestern Sinai, Egypt

Diit Quaternary Stream Sediments, Southern Coast of the Red Sea, Egypt: Potential Source of Ilmenite, Magnetite, Zircon, and Other Economic Heavy Minerals

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