The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
INFRA-CAMBRIAN PLACER GOLD-URANIFEROUS PALEOZOIC SEDIMENTS, SOUTHWESTERN SINAI, EGYPT
1
16
29943
10.21608/nssj.2019.29943
EN
Abdalla S. A.
Alshami
Nuclear Materials Authority, Cairo, Egypt
Journal Article
2019
01
01
The present paper studied the stratigraphic succession of Infra-Cambrian Taba Formation overlain<br />by Sarbit El Khadim, Abu Hamata, Adedia and Um Bogma formations. The distribution of Taba Formation<br />at the study area comprises, Khaboba, Gabal Adedia, El Ferah, El Marahil, Gabal Hemeiyir and Ma’ein<br />localities. Gold is recoded mineralogically and geochemically at Khaboba locality. Also the gold is<br />recorded at the sandstone of Sarabit El khadim (4.5ppm) and the dolostone of Um Bogma Formation<br />(9.7ppm). The radiometric survey recorded thorium in Taba Formation up to 700 ppm. Also, thorium is<br />predominant in sandstone of Adedia Formation at Ras El Homara and Syniea. The chemical analyses<br />recorded uranium up to 1000 ppm in sandstone of Adedia Formation at Sarbit El Khadim locality<br />(Temple) for the first time.
https://nssj.journals.ekb.eg/article_29943_a4065fd50e91de227e17b95d8c43df6e.pdf
The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
GEOLOGY, GEOCHEMISTRY AND RADIOACTIVITY OF GABAL SHENDIB ALKALINE RING COMPLEX, SOUTH EASTERN DESERT, EGYPT
17
38
29944
10.21608/nssj.2019.29944
EN
Hassan A. A.
Shahin
Nuclear Materials Authority, Cairo, Egypt
Masoud S.
Masoud
Nuclear Materials Authority, Cairo, Egypt
Journal Article
2019
04
12
Gabal Shendib alkaline ring complex forms high positive topographic rock units of concentric circular<br />outcrop. The igneous complex has a diameter of 12 km emplaced within the metavolcanics and tonalitegranodiorite<br />host rocks. The complex consists of olivine gabbro, alkaline granite, alkaline syenite and remnants of the volcanic rocks represented by porphyritic trachyte, porphyritic rhyolite, rhyolite and tuffs. These alkaline rocks show a strong enrichment in some rare metal contents (Zr = 4527, Nb = 717, Y = 806 ppm) and rare earth elements (La = 553, Ce = 1581, Pr = 214, Nd = 1145, Sm = 299, Gd = 55, Dy= 85ppm). The highest Rb/Sr ratio and lower Ba/Rb ratio of the studied alkaline rocks of Gabal Shendib ring complex indicating a high degree of fractionation of the melt associated with mineralization.<br />REE abundance patterns of the alkaline granite and alkaline syenite display M-type and W-type tetrad<br />effect with strong Eu depletion in both whole rock samples. Fluid-melt interaction in the late stage of<br />fractional crystallization is suggested to be the most important factor controlling the formation of REE<br />tetrad effects in these alkaline rocks. The most important REE-bearing minerals are zircon, xenotime,<br />monazite, allanite and apatite. Other accessory minerals include columbite, uranophane, urnothorite and<br />titanite are identified.Field radiometric measurements and chemical analysis for uranium content of the alkaline granite and alkaline syenite revealed low uranium content. Radioactivity level reaches up to 13.70 ppm eU in alkaline<br />granite and 4.90 ppm eU in the alkaline syenite. Chemical analysis of uranium revealed that U content<br />reaches up to 35 ppm in the alkaline granite and 15 ppm in the alkaline syenite.
https://nssj.journals.ekb.eg/article_29944_cdb013dd485f7819e57a0455d88db12b.pdf
The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
A CONTRIBUTION TO THE GEOCHEMISTRY OF EL-SIBAIYA PHOSPHORITES, NILE VALLEY, EGYPT
39
58
29945
10.21608/nssj.2019.29945
EN
Ahmed M.
Bishady
Department of Geology, Faculty of Science, Minufiya University, Minufiya, Egypt
Nagdy M.
Farag
Nuclear Materials Authority, Cairo, Egypt
Hamed I.
Mira
Nuclear Materials Authority, Cairo, Egypt
EL-Sayed H.
Elsawey
Nuclear Materials Authority, Cairo, Egypt
Sameh H.
Negm
Nuclear Materials Authority, Cairo, Egypt
Journal Article
2019
04
12
El-Sibaiya phosphorites represent a part of the Middle East to North Africa phosphogenic province.<br />They encountered in the Gabal (G.) Duwi Formation of Late Cretaceous to Paleogene age. The studied<br />samples have been collected from the eastern and western sides of the Nile River.<br />Major elemental analysis of the collected samples declared positive correlations between P2O5 and<br />CaO and F. These correlations indicate that these elements are contained in the apatite phase. On the other<br />hand, P2O5 shows negative correlations with other major elements such as Al2O3, SiO2, Fe2O3 and MgO.<br />Some trace elements such Cr, Sr and V show positive correlation with P2O5.<br />The average of the total rare earth elements (!REEs) in the studied phosphorites is 262ppm.<br />Chondrite-normalized patterns of !REEs of the studied phosphorites show a good coherence with the world<br />average of shale suggesting that !REEs in the studied phosphorites were derived from the associated<br />clastic debris through the diagenetic remobilization. The week negative Ce and Eu anomaly of the studied<br />samples and the marked enrichment in LREEs emphasize that the studied phosphorites subjected to a later<br />post-depositional modification.<br />Laser ablation analysis showed that apatite mineral of the studied phosphorites is enriched in some<br />elements such as Ca, F, Cr, Sr, V, Zn, Ba and REEs. This explains the major role of substitution processes<br />of these elements within apatite lattice.<br />The uranium average in El-Sibaiya East phosphorites is 81.6 ppm, while in El-Sibaiya West<br />is 51.1ppm. Apatite minerals play an important role in the accumulation of U within the studied<br />phosphorites.
https://nssj.journals.ekb.eg/article_29945_1a47a87d7e39519ca5d478e3c5aff390.pdf
The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
CONTRIBUTION TO THE GEOLOGY, PETROLOGY AND AIRBORNE GAMMA-RAY SPECTROMETRY OF GABAL EL-MUEILHA GRANITIC ROCKS, SOUTHERN EASTERN DESERT, EGYPT
59
78
29975
10.21608/nssj.2019.29975
EN
Ismail M.
Abdel Ghani
Nuclear Materials Authority, Cairo, Egypt
Journal Article
2019
04
14
Gabal (G.) El-Mueilha Granitic rocks are represented by an oval shaped stock that intruding the<br />surrounding older rock units including ophiolitic mélange, metavolcanics, older granitoids and younger<br />gabbros and sending several offshoots into them. The study area is affected by several fault systems in<br />NW-SE, NE-SW and N-S directions. Petrographically, these younger granites are mainly represented by<br />muscovite granite (syenogranite) that shows different degrees of albitization especially at the peripheral<br />parts of the stock beside the ferrugination and silicification. The main accessory minerals are cassiterite,<br />fluorite, zircon, beryl, monazite, thorite and uranothorite which are responsible for the radioactive<br />anomalies in G. El-Mueilha syenogranitic mass. The airborne gamma ray spectrometry shows high<br />radioactive anomaly restricted to the younger granitic mass relative to the other surrounding rocks that have<br />low to moderate radioactivity. The eTh/eU ratio of G. El-Mueilha syenogranite indicates U-enrichment<br />especially during albitization processes.
https://nssj.journals.ekb.eg/article_29975_b3832be593d81b799468b26be2a0edaf.pdf
The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
MINERALOGY, CHEMISTRY AND RADIOACTIVITY OF THE ANOMALOUS QUARTZ VEIN ACCOMPANYING THE WESTERN SHEAR ZONE OF RAS ABDA GRANODIORITE, NORTH EASTERN DESERT, EGYPT
79
97
29976
10.21608/nssj.2019.29976
EN
Abd Elmoez A.
Sadek
Nuclear Materials Authority, Cairo, Egypt
Wafaa H.
Saleh
Nuclear Materials Authority, Cairo, Egypt
Ehab K.
Abu Zeid
Nuclear Materials Authority, Cairo, Egypt
Journal Article
2019
04
14
The quartz vein cutting the granodiorite of Ras Abda, along the western shear zone, exhibits high<br />radioactive potentiality (up to 3000 ppm for Th and 1600 ppm for U. The microscopic investigation of<br />the quartz vein revealed that it is composed mainly of quartz and iron oxides enclosing squadrons of<br />the accessory minerals. Granitic fragments are corroded and digested from the wall-rock affecting the<br />chemical composition of the studied rock. Chemically, it is characterized by low alumina and medium<br />potassium contents with peralkaline affinity. It is also characterized by high concentrations of the trace<br />elements (Zr >10000, Nb 3481, Y 8621, U 903 and Th 2340 ppm) and the total rare earth elements (up to<br />24246 ppm) specially the HREEs with very low degree of fractionation in the melt (0.014) and in turn,<br />high degree of fractionation in the accessory minerals.<br />The mineralogical investigation using ESEM and XRD techniques revealed the minerals are<br />responsible for the radioactivity in the anomalous rock such as zircon, thorite, uranothorite and Nb-Ta<br />minerals (columbite, euxenite and uranopolycrase).<br />Experimental work in this study agreed with the previous experiments and concluded that metamictization<br />is attributed to the heat of self-annealing that responsible for transformation of U-euxenite to metamictized<br />euxenite and transformation of Ti-U-euxenite to metamictized uranopolycrase.<br />The present study concluded that the studied quartz vein originated from silicic magma rich in the trace<br />and rare earth elements; hence it is considered as good hostile for the radioelements and possesses high<br />radioactive potentiality.
https://nssj.journals.ekb.eg/article_29976_cd3917c2969a0366d71a7094a2c10f0d.pdf
The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
HYPERSPECTRAL ANALYSIS OF ASTER AND LANDSAT 8 DATA TO CHARACTERIZE EL-MISSIKAT URANIUM BEARING SILICEOUS VEINS AND THEIR ANALOGY TO EL-ERADIYA AND GATTAR GRANITES, EASTERN DESERT, EGYPT
99
115
29978
10.21608/nssj.2019.29978
EN
Mohamed A.
El Zalaky
Nuclear Materials Authority, Cairo, Egypt
Journal Article
2019
04
14
This work aims to apply spectral image processing techniques that have been used often to process<br />hyperspectral data to analyze multispectral ASTER (Advanced Spaceborne Thermal Emission and<br />Reflection Radiometer) and Landsat 8 data for mapping uranium-bearing siliceous rocks within El-<br />Missikat granite. These techniques succeeded effectively in recognition of the same features at El-Eradiya<br />and Gattar granites. Siliceous materials (siliceous sinter), as used here, is a spectral group of SiO2 minerals<br />including opal, chalcedony and cristobalite derived from hydrothermal fluids and/or the decomposition of<br />granite. The spectral identification of such minerals depend mainly on the uses a hydration absorption<br />feature that characterize some hydrated silica at wavelength region of 2.2- to 2.4-μm.<br />The effectiveness of the hyperspectral analysis techniques used to compare a pixel spectrum with the<br />spectra of known pure materials, extracted from the spectral end member selection procedures, including<br />minimum noise fraction (MNF), pixel purity index (PPI) and n-dimensional visualization. Among those<br />of the spectral analysis algorithms employed, spectral angle mapping (SAM) and matched filtering (MF)<br />produced accurate classifications that were close to the ground reference data. The hyperspectral<br />analysis of an ASTER and Landsat 8 dataset covering the studied areas, has successfully effective in<br />detecting lithological units than traditional multispectral analysis procedures.<br />Field validation and laboratory investigation were carried out to prove and support the results<br />obtained from ASTER and Landsat 8 processing. These results succeeded to delineate additional sites<br />of siliceous materials that could be a promising areas to host the uranium mineralization.
https://nssj.journals.ekb.eg/article_29978_1121dd404fbfd2f10d3e8b7e8299b585.pdf
The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
MINERALOGY AND RADIOACTIVITY STUDIES OF WADI ABU HAMUR-SAFAGA STREAM SEDIMENTS, CENTRAL EASTERN DESERT, EGYPT
117
140
30129
10.21608/nssj.2019.30129
EN
Ashraf
El Azab
Nuclear Materials Authority,Cairo, Egypt
Journal Article
2019
04
15
The studied area covered by igneous and metamorphic rocks represented by Metagabbro, Metavolcanic,<br />Older Granite, Dokhan Volcanics, Hammamat Sediments, and Younger Granite. Faults are essential<br />structural features in the study area. The strike-slip faults of NW trends are right-lateral, while those of<br />E-W, NE, and NNE trends are left-lateral faults. The normal faults are only preserved on a minor scale<br />along these strike-slip faults represented by nearly vertical slicken-sides that indicate substantial vertical<br />displacement.<br />The grain size analysis and its distribution is a fundamental descriptive measure of clastic sediments.<br />The results of statistical parameters a graphic mean (Mz) ranging from 0.04f to 1.8f, which means that it<br />lies in coarse and medium sand size classes represented by 70% and 30%, respectively; inclusive graphic<br />standard deviation (I) ranging from 0.88 to 1.8. The samples could be categorized in the poorly sorted<br />class and moderately sorted represented by 75% and 25%, respectively; inclusive graphic Skewness (SkI)<br />ranging from 0.03 to 0.33, the samples could be categorized in fine skewed, near symmetrical, and strongly<br />fine skewed classes represented by 55% ,40%, and 5%, respectively. Inclusive graphic Kurtosis (Kg)<br />ranging from 0.68 to 2.05, the samples could be categorized in the platykurtic; mesokurtic, very lepto kurtic<br />and lepto kurtic classes represented by 35% , 25% , 15% and 25%, respectively.<br />The average content of total heavy minerals is 4.5% while the heavy content is ranging from 2%<br />and 10.5%. Opaque minerals represented by magnetite, hematite, ilmenite constituents have an average<br />of 1.07 %, 0.1 %, and 0.286%, respectively. Abrasive minerals as garnet constituents has an average<br />of 0.13%, and pigment minerals as rutile and titanite constituents have an average of 0.188%, and<br />0.23%, respectively. Radioactive minerals as fluorites, zircon, and thorite constituents have an average<br />of 0.0075%, 0.184%, and 0.001 %, respectively. Amphiboles and pyroxene constituents range from 0.1%<br />to 3.78% with an average of 2.22 %. The eU contents range between 1 and 4ppm with an average of<br />1.76ppm, while eTh is between 2 and 29 ppm with an average of 10.75ppm. The average Ra average<br />content for these sediments is 2.89 ppm, while the average content of K% is 1.16%.
https://nssj.journals.ekb.eg/article_30129_3e5719700c77fac54a04d10e8bf70fb9.pdf
The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
GEOLOGY, GEOCHEMISTERY AND RADIOACTIVITY OF POST COLLISION GRANITE AT WADI MURRA AREA, SOUTH EASTERN DESERT, EGYPT
141
171
30135
10.21608/nssj.2019.30135
EN
Adel H.
El Afandy
Nuclear Materials Authority,Cairo, Egypt
Khairya M.
Fawzy
Faculty of Science, Aswan University
Hassan M.
Assran
Nuclear Materials Authority,Cairo, Egypt
Ehab K.
Abu Zeid
Nuclear Materials Authority,Cairo, Egypt
Jehan B.
El Shaieb
Nuclear Materials Authority,Cairo, Egypt
Journal Article
2019
04
15
Wadi Murra area lies between Lat. 22º 24' and 22º 30' N and Long. 33º 43' and 33º 52' E. The<br />studied younger granites in Wadi Murra area are represented by monzogranite, syenogranite and alkali<br />feldspar granite. Wadi Murra granites have a semi rounded-NS oval shape (11x8 km) comprising monzo<br />and syenogranite in the middle grading to alkali-feldspar granite at the peripheries. Alkali feldspar granite<br />intrudes the surrounding island arc metavolcanics as well as monzogranite of Gabal Umm Ara.<br />Monzo and syenogranite consist mainly of potash feldspar, plagioclase, quartz and mafic minerals<br />with noticeable amount of opaque minerals. The main characteristic texture is equigranular with<br />medium to coarse grain size. Porphyritic texture is also present. Alkali-feldspar granite is medium grained<br />and characterized by hypidiomorphic granular texture and composed mainly of alkali-feldspar (orthoclase<br />and minor microcline), quartz and subordinate plagioclase. The main mafic minerals are either amphibole<br />or biotite. Accessories are represented by zircon, sphene, apatite and iron oxides.<br />Geochemically, the studied granites are calc-alkaline in nature, emplaced in post collision granite<br />environment and have A2 character. The radiometric data for monzogranite show a wide variation in eU<br />and eTh contents. The eU content ranges from 6 to 12 ppm with an average of 8.5 ppm and the eTh<br />content ranges from 5 to 16 ppm with an average of 10.12 ppm. The potassium content ranges between<br />3.08 % and 7.67 % with an average of 4.49 % . The eU content in syenogranite ranges from 2.4 to 6 ppm<br />with an average of 3.78 ppm and the eTh content ranges from 7 to 9 ppm with an average of 8 ppm. The<br />potassium content is ranging between 4.08 % and 4.69 % with an average of 4.53 % . The eU content in<br />alkali feldspar granite ranges from 5 to 9.8 ppm with an average of 6.86 ppm and the eTh content ranges<br />from 8 to 16 ppm with an average of 13.25 ppm. The potassium content is ranging between 4.9 % and<br />4.95 % with an average of 4.70 %.<br />The picked minerals from the anomalous samples are identified confirmed by environmental Scan<br />Electron Microscope (ESEM) and XRD techniques at Laboratories of Nuclear Materials Authority<br />(NMA). The identified minerals are classified to: 1) Secondary uranium minerals (uranophane, autunite<br />and metautunite), 2) Thorium minerals (uranothorie), 3) Niobium-tantalum minerals (columbite), 4) Base<br />metals minerals (pyrite) and 5) Accessory minerals bearing U, Th and REEs (zircon, fluorite, monazite,<br />xenotime, sphene, allanite, apatite and iron oxides).
https://nssj.journals.ekb.eg/article_30135_f6b4e2463b0a93bf9c87ae4e63f0cde6.pdf
The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
SEPARATING THE ANOMALOUS ZONES OF GAMMA-RAY SPECTROMETRIC DATA USING THE MEDIAN TO FIT THE MATHEMATICAL SURFACE ON EL-MISSIKKAT EL-GIDAMI AREA, CENTRAL EASTERN DESERT, EGYPT
173
179
30139
10.21608/nssj.2019.30139
EN
Ahmed I.
Kamel
Nuclear Materials Authority,Cairo, Egypt
Journal Article
2019
04
15
Traditionally, the least-squares method is applied to separate the highly radioactive zones of gamma-ray<br />spectrometric maps in order to find the normal radioactive background of the host rocks. In the present<br />study, the regional background of gamma-ray spectrometric data was calculated by using the median<br />instead of least-squares method which is based on the mean. The obtained least-squares do not properly fit<br />due to the strong effect of the few outlier data points that are extremely high or low. The median is less<br />affected by outliers and skewed data. If we reject these anomalous zones data, the proper fitting takes place.<br />This study deals with using the median as a more suitable measure of central tendency for data classified on<br />an ordinal scale. The mean is not suitable when the data include exceptionally high or low values because<br />these have great influence on the outcome. The median was applied to the gamma-ray spectrometric (Total<br />Count) survey data of El-Missikkat-Gidami area to separate the radioactive anomalous zones from the<br />normal radiation of the host rocks.
https://nssj.journals.ekb.eg/article_30139_4617dd754f382e20f15e65166453a064.pdf
The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
GEOLOGICAL AND RADIOACTIVITY STUDIES ON THE DYKES OF WADI EL AKHDAR AREA, SOUTHERN SINAI, EGYPT
181
202
30140
10.21608/nssj.2019.30140
EN
Atef H.
Abd El Azeem
Nuclear Materials Authority,Cairo, Egypt
Journal Article
2019
04
15
The present work deals with the dykes of Wadi El Akhdar area in southern Sinai which is located<br />between lat. 28˚42′-28˚55′ N and long. 33˚40′-33˚53′ E and covers an area of about 700km2. The area<br />is characterized by basement rocks unconformably covered by Phanerozoic sedimentary rocks in the<br />northeastern portion. Field surveys indicated that the studied dykes traverse most rocks in Wadi El Akhdar<br />area except the quartz-syenite and Phanerozoic sedimentary rocks. The different rock units of the area<br />under consideration are traversed by various types of post-granitic dykes. Frequently, many of dykes<br />have curved outcrops, running in remarkable parallelism with each other and vary in inclination from<br />steep inclined to vertical, 0.5 to 20m in thickness and between 0.1 to 6km in length. Different types of<br />dykes are distinguished; acidic (granophyers, rhyolites, porphyritic rhyodacites and dacites), intermediate<br />(andesites) and basic (dolerites and basalts). The relative ages assigned from relationship between dykes<br />are given as follows: The acidic dykes were intruded first, followed eventually by two periods of a variety<br />of dykes. Photogeological studies of the dyke lineaments showed that the studied area is affected by the<br />following trends of dyke lineations; NNE, NE and NW directions. The N35˚W and N25˚E sets are the<br />most dominant dyke trends, while the less dominant trends are E-W, N15˚W and N56˚W. The trends ENE<br />and NW of dyke swarms are consistent with the main trends of dyke swarms in the Precambrian rocks<br />of Egypt. The regional trends of dyke swarms are strongly consistent with the regional trends of fractures<br />including faults and joints, i.e. dykes are structurally controlled. Radiometric measurements of dykes<br />indicated that, the acidic dykes are relatively more enriched in eU (av. =22.3 ppm) than other types of<br />dykes (av.=3.30 ppm) in intermediate dykes and (av.=2.10 ppm) in basic dykes. On the other hand, the<br />acidic dykes contain most eTh contents. Their average content of eTh is 25.70 ppm whereas it is 8.94 ppm<br />in intermediate dykes, and 4.10 ppm in basic ones. The eU contents in acidic dykes may be due to their<br />accessory minerals (i.e. apatite, zircon and sphene).
https://nssj.journals.ekb.eg/article_30140_3afd302d897cc6215bfc6c1695ae1f30.pdf
The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
WELL LOGGING ANALYSIS FOR ESTIMATING POROSITY IN FRACTURED BASEMENT RESERVOIRS
203
211
30141
10.21608/nssj.2019.30141
EN
Mahmoud E.
Abd El Razik
Nuclear Materials Authority,Cairo, Egypt
Journal Article
2019
04
15
Low porosity fractured reservoirs have been successfully described, using a combination of high<br />resolution geometrical information from borehole images, together with deeper penetrating log evaluation<br />methods. Borehole images from acoustic or electrical scanning tools provide statistics of the fracture<br />distribution, first order estimates of fracture opening and porosity, and a basis for geological inferences.<br />Their drawback is that, in this environment, the events on the images bear a strong overprint of the drilling<br />process. Deeper penetrating, but lower resolution techniques, such as Stoneley wave reflectance and deep<br />resistivity log inversion are used to distinguish the deep and permeable fractures that may contribute to<br />flow. By making some assumptions about the nature of porosity in basement reservoirs, we develop a new<br />method to estimate the porosity and the fraction of this secondary porosity is developed due to fractures.<br />This method makes the use of the Kuster-Toksoz acoustic scattering model and requires low frequency<br />measurements of compressional and shear velocities.
https://nssj.journals.ekb.eg/article_30141_509b5af70847648737e7f7945ad7a197.pdf
The Scientific Society of Nuclear Materials Authority
Nuclear Sciences Scientific Journal
2314-5609
8
1
2019
04
01
URANIUM REMOVAL FROM NITRATE SOLUTION BY CATION EXCHANGE RESIN (AMBERLITE IR 120), ADSORPTION AND KINETIC CHARACTERISTICS
213
230
30142
10.21608/nssj.2019.30142
EN
Ebrahim A.
Gawad
Nuclear Materials Authority,Cairo, Egypt
Journal Article
2019
04
15
The present work aims to study the adsorption behavior of uranium ions from nitrate solutions using<br />the strong acid cation exchange Amberlite IR120 resin. Batch shaking sorption experiments are carried<br />out to evaluate the performance of the studied resin in the uranium adsorption. The adsorption parameters<br />including contact time, pH, initial uranium concentration and temperature have been optimized. The<br />physical parameters including the adsorption kinetics, the isotherm models and the thermodynamic data<br />have also been determined to describe the nature of the uranium adsorption by the investigated resin.<br />The modellated data has been found to agree with both the exothermic pseudo first order reaction and the<br />Langmuir isotherm. The applied procedure was used for uranium ions removal from scrub and raffinate<br />liquors.
https://nssj.journals.ekb.eg/article_30142_ffde59e4e17dbfabd0fe8b975dfac1b6.pdf