Mineralogical and Radiological Micro-Analysis of Raw Sands and Their Processed By-Products for Land Reclamation Applications
In this study, forty samples of different types of raw sands, magnetite, green silicate and processed mixture of ilmenite, magnetite and green silicates have been mineralogical and radiometrically investigated after preparation. Determination of the mineral contents, radioactivity levels and their corresponding environmental impacts was also carried out. The radioactivity: 238U, 232Th, 226Ra and 40K, of these samples are of naturally occurring origin. The EDX analysis was applied for identification of trace elements in the samples. The microscopic investigations of the samples indicate that the black sand samples are economically rich in heavy minerals such as ilmenite, magnetite, zircon, rutile and monazite; in addition to leucoxene. While the processed and unprocessed green silicate contain ilmenite, zircon, sphene, monazite and calamine with quartz and other silicate minerals. The highest values of activity concentrations of 238U, 232Th, 226Ra and 40K were observed in black sand, processed and unprocessed green silicates samples. These high radioactivities are attributed to the presence of zircon, monazite and sphene. The radiological hazard parameters; the absorbed dose rate (D), annual effective dose equivalent AEDE, radium equivalent activity Raeq, external hazard index Hex, internal hazard index Hin and gamma activity concentration index Iγ of the studied samples were estimated. The results obtained were tabulated, evaluated, interpreted and discussed.
Osama A. M. Ebyan,
Mahmoud R Khattab,
Mohamed A. E. Abdel-Rahman,
Mineralogical and Radiological Micro-Analysis of Raw Sands and Their Processed By-Products for Land Reclamation Applications, Nuclear Science.
Vol. 2, No. 2,
2017, pp. 44-53.
Moustafa, M. I. and Abdelfattah, N. A. Physical and chemical beneficiation of the Egyptian beach monazite. Resource Geol. 60, 288–299 (2010).
Darby, D. A. and Tsang, Y. W. Variation in ilmenite element composition within and among drainage basins: Implications for provenance [J]. J. Sediment. Petrol. 87, 831−838 (1987).
Estellita, L., Santos, A. M. A., Anjos, R. M., Yoshimura, E. M., Velasco, H., Da Silva, A. A. R., and Aguiar, J. G. Analysis and risk estimates to workers of Brazilian granitic industries and sandblasters exposed to respirable crystalline silica and natural radionuclides [J]. Radiation Measurements. 45, 196−203 (2010).
Shukri, N. M. The mineralogy of some Nile sediments [J]. Quart. J. Geol. Soc. London. 105, 511−534 (1950).
Hammoud, N. M. S. Concentration of Monazite from Egyptian Black Sands, Employing Industrial Technique [D]. MSc. Thesis. Fac. Sci. Cairo Univ., Egypt (1966).
Hammoud, N. M. S. Physical and Chemical Properties of Some Egyptian Economic Minerals in Relation to Their Concentration Problems [D]. Fac. Sci. Cairo Univ., Egypt (1973).
Dabbour, G. A. Physical Properties and Distribution of Zircon in Some Egyptian Placer Deposits [D]. MSc. Thesis. Fac. Sci., Cairo Univ., Egypt (1973).
Dabbour, G. A. Geological and Mineralogical Studies on Rutile in the Black Sand Deposits from the Egyptian Mediterranean Coast [D]. Ph. D. Thesis. Fac. Sci., Cairo Univer., Egypt (1980).
Moustafa, M. I. Investigations of Some Physical Properties of Zircon and Rutile to Proper High Purity Mineral Concentrates from Black Sand Deposits, Rosetta, Egypt [D]. MSc. Thesis. Fac. Sci., Mansoura Univer., Egypt (1995).
Moustafa, M. I. Mineralogical and geochemical studies on monazite − Th, REE silicate series in the Egyptian beach monazite concentrate [J]. J. Sedi. Soc. Egypt. 17, 63−88 (2009).
Barakat, M. G. Sedimentological Studies and Evaluation of Some Black Sand Deposits on the Northern Coast of Egypt [C]. Fac. Sci., Alexandria Univ., Egypt (2004).
El-Nahas, H. A., Mineralogy, evaluation and upgrading studies on some economic minerals in beach black sands. El Arish area, Egypt. M. Sc. Thesis, Fac. Sci., El Minufiya University, Egypt, 162 p (2002).
Abd El-Wahab, M and El-Nahas, H. A. Radionuclides measurements and mineralogical studies on beach sands, East Rosetta Estuary, Egypt Chin. J. Geochem. 32: 146–156 (2013).
Moustafa, M. I. Mineralogy and beneficiation of some economicminerals in the Egyptian black sands. Ph. D. Thesis, Fac. Sci., Mansoura University, Egypt (1999).
Moustafa, M. I. Separation of economic minerals and discovery of zinc, lead and mercury minerals in the Egyptian black sands. The Third international conference of the geology of africa, Geol. Dept., Fac., Scie., Assuit Univ., Egypt, 153–171 (2003).
Moustafa, M. I. Geochemical studies of the Egyptian beach cassiterite concentrate and its importance as a source of Sn, Ta, Nb and others. The Fifth International Conference on the Geology of Africa, Fac. Sci., Assiut Univ., Assiut, Egypt, 1, 63–78 (2007).
E Elles, P. and Lee, S. Y. Radionuclide-contaminated soil: a mineralogical perspective for their remediation. In: Dixon JB, Schulze DG (eds.) Soil mineralogy with environmental applications, Chap 25. Soil Sci Soc of America, Madison, p 737–763 (2002).
Taboada, T. Cortizas, A. M. Garcı´a, C. Rodeja, E. G. Uranium and thorium in weathering and pedogenetic profiles developed on granitic rocks from NW Spain. Sci Total Environ., 356, 192–206 (2006).
El-Aassy, I. E. Afaf, A. N. El-Galy, M. M., El-Feky, M. G. Abdel Maksoud, T. M., Talaat, Sh. M., Ibrahim, E. M. Behavior and environmental impacts of radionuclides during the hydrometallurgy of calcareous and argillaceous rocks, Southwestern Sinai, Egypt. Appl Radiat and Isotopes. 70, 1024–1033 (2012).
El-Kammar, A. A. Ragab, A. A. Moustafa, M. I. Geochemistry of Economic Heavy Minerals from Rosetta. JAKU: Earth Sci. 22, 69-97 (2011).
Hinton, R. W. and Paterson, B. A. Crystallization history of granitic magma: Evidences from trace elements zoning [J]. Mineral. Mag. 58, 416−417 (1994).
Bea, F. Pereira, M. D. Corretage, L. G. Fershtater, G. B. Differentiation of strongly peraluminous, perphosphorous granites: The Pedrobenards Pluton, Central Spain [J]. Geochimica et Cosmochimica Acta. 58, 2609−2627 (1994).
Bea, F. Residence of REE, Y, Th and U in granites and crustal protoliths: Implications for the chemistry of crustal melts 11 [J]. J. Petrol. 37, 521−552 (1996).
Dabbour, G. A. Mineralogical study on the opaque minerals and secondary rutile from the Egyptian black sands. Proc. Egypt. Academy of Sci., pp. 105–121 (1997).
Lindsley, D. H. Expermintal studies of oxides minerals. Review of Mineralogy. Book Crafters, Inc., Chelsea, Michigan. Vo1. 25, pp. 69-100 (1991).
Large, D. The geology of non-sulphide Zinc Deposits-an overview, Erzmetall 54, 264–276. (2001).
International Atomic Energy Agency (IAEA), Measurement of radionuclides in food and the environment, a guidebook, Technical Reports Series No. 229, Vienna (1989).
Malczewski, D. Taper, L. Dorda, J. Assessment of natural and anthropogenic radioactivity levels in rocks and soils in the environs of Swieradow Zdroj in Sudetes, Poland by in situ gamma-ray spectrometry. J. Environ. Radioact. 73, 233-245 (2004).
El-Galy, M. M. El-Mezayen, A. M. Said, A. F. El Mowafy, A. A. Mohamed, M. S. Distribution and environmental impacts of some radionuclides in sedimentary rocks at Wadi Naseib area, Southwest Sinai, Egypt. Jour. Environ. Radioact. 99, 1075–1082 (2008).
UNSCEAR. United Nations Scientific Committee on the effects of atomic radiation, sources and effects of ionizing radiation. Report to General Assembly, with Scientific Annexes United Nations. United Nations, New York (2000).
Ȍrgün, Y. Altınsoy, N. S. Ahin, S. Y. Gungor, Y. Gultekin, A. H. Karahan, G. Karacık, Z. Natural and anthropogenic radionuclides in rocks and beach sands from Ezine region (Canakkale), Western Anatolia, Turkey. Appl Radiat Isot 65: 739–747 (2007).
Tzortzis, M. Tsertos, H. Christofides, S., Christodoulides, G. Gamma-ray measurements of naturally occurring radioactive samples from Cyprus characteristic geological rocks. Radiat. Meas., 37, 221–229 (2003).
Abbady, A. G. E. Uosif, M. A. M. El-Taher, A. Natural radioactivity and dose assessment for phosphate rocks from Wadi El-Mashash and El-Mahamid Mines, Egypt. Jour. Environ. Radioact., 84, 65–78 (2005).
Beretka, J. and Mathew, P. J. Natural radioactivity of Australian building materials, industrial wastes and by-products [J]. Health Phys. 48, 87−95 (1985).
Fares, S. Ashour, A. El-Ashry, M. Abd El-Rahma, M. Gamma Radiation Hazards and Risks Associated with Wastes from Granite Rock Cutting and Polishing Industries in Egypt. Ядерна та радіаційна безпека 1 (53). УДК 539.16: 553.521 (2012).
Anjos, A. M. Veiga, R. Soares, T. Santos, A. M. A. Aguiar, J. G. Frascá, M. H. B. O. Brage, J. A. P. Uzêda, D. Mangia, L. Facure, A. Mosquera, B. Carvalho, C. Gomes, P. R. S. Natural radionuclide distribution in Brazilian commercial granites. Radiation measurements, 39, 245-253 (2005).
Ravisankar, R. Vanasundari, K. Chandrasekaran, A. Rajalakshmi, A. Suganya, M. Vijayagopal, P. Meenakshisundaram, V. Measurement of Natural Radioactivity in Building Materials of Namakkal, Tamil Nadu, India Using Gamma-Ray Spectrometry", Applied Radiation and Isotopes, 70, 699-704 (2012).
EC. European Commission Report on “Radiological Protection Principles concerning the Natural Radioactivity of Building Materials”. Radiation protection 112 (1999).
UNSCEAR. Exposure from natural sources of radiation. Forty-second session of United Nations Scientific Committee on the Effect of Atomic Radiation, Vienna 12-28 May (1993).