| Abstract: |
The work aims to study the sorption efficiency of Ismailia canal bottom sediments for some radionuclides; to evaluate the possible hazards that may occur due to the transfer of the radionuclides into the canal water. The study includes some factors affectThe radionuclides used are 134Cs,89Sr, 60Co and (152+154)Eu as representatives for mono-, di- and trivalent elements. The investigated samples (water and sediments) were collected from seven locations along Ismailia canal, (34 km), from Shoubra El-Kheima Chapter one: IntroductionThis chapter includes a literature survey covering the following topics:- general knowledge about locations of atomic installations and importance of water bodies for disposal of low level radioactive liquid wastes.- definition of the radioactive wastes, the sources and classifications (gaseous, liquid and solid wastes).- main sources of radionuclides in the environment (natural and artificial).- the nuclear, chemical and environmental characteristics of the investigated radionuclides 134Cs,89Sr, 60Co and (152+154)Eu.- the physico-chemical nature of sorption phenomena, physical, chemical and electrostatic adsorption.- the methods used for evaluation of the adsorption and the soil minerals and their surface properties predicate aluminosilicate minerals, metal-oxides and soil organic matter.The last part deals with the origin of humic substances, pathways of humic synthesis in nature, characteristics, structure, spectroscopic characters, characteristics of humate complexes and isolation of humic acid from sediments, also the order of the reaChapter two: ExperimentalThis chapter presents the experimental procedures that were followed in this study. It deals with the collection and preservation of the investigated samples (water and sediments), physical and chemical properties of water samples, the physical, chemical Chapter three: Results and DiscussionsThis chapter includes the obtained experimental results and their interpretation as well as comparison with other published data:Seven sampling locations, along the Ismailia canal, were selected for collection of water and sediment samples. The first location was at Shoubra El-Kheima and this location served as a reference location during this study. The last location was selected Water samples: The canal water has (TDS) range of 0.063 to 0.145g.l-1, a temperature range of 27.4 to 28 oC, slightly alkaline and moderate hardness.Sediment samples: The Ismailia canal sediments are sandy type and the ratio of these fractions, according to their particle diameters, obtained from the particle size analyses are sand (45 to 94%), silt (2.6 to 33%) and clay (3 to 21%).The mineralogical analyses of the investigated sediment samples showed that quartz is the most abundant mineral in most samples (No. 1,2,3,4,6,7) and amphibole is more abundant in only one sample (No. 5). Illite is shown in only one sample (No.3) as a verThe elemental composition of the isolated humic acid samples from Ismailia canal sediments shows that they have low content of carbon and high contents of nitrogen, sulpher and oxygen. The composition of humic acid samples is different from each other. Th
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