الفهرس 
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Abstract
Four soil samples were collected from EI-Dabaa site and
denoted as ONS/ A, DNS/C, ONS/QHM and ONS/QHMA. They
were characterized using X-Ray Fluorescence (XRF) analyses,
Fourier transform infrared spectroscopy (FT -IR) analysis, X-Ray
diffractometer (XRD) analysis and scanning electron microscope.
Results clarify that samples are crystalline in nature. The soil samples
were successfully applied as solid phases for retention of 134CS, 60CO
and 152+154Eu radionuclides from their aqueous solutions. The effect
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of different parameters (e.g. pH, contact time, solid to liquid ratio,
initial metal ion concentration and temperature) on sorption behavior
was studied. Effect of competitive univalent (Na +), bivalent (Ca2+),
(Mg2+), (Mn2+) and trivalent (AI3+) cations on retention of the soil
samples for 134CS, 60CO and 152+154Eu radionuclides was studied.
Maximum sorption capacity (Qmax, mg/g) was in the order of
152+154E 60C 134C O•f’l’. kineti d I I• d
u > 0 > s. I rerent metre mo e s were app le to
assess the sorption of 134CS, 60CO and 152+154Eu ions from their
aqueous solutions by soil samples. Pseudo-first order and pseudo-
second were used to clarify the suitable sorption pathway. The
sorption process followed pseudo-second order kinetics confirmed
that chemisorption could be regarded as controlling step. Desorption
study was applied for soil samples using different eluents include
NaOH, H20, HCI, FeCb, EDTA and HN03. Diffusion study was
applied using film diffusion model and intra-particle diffusion model
that shows sorption behavior was related by two straight lines this
will illustrates that two steps influence the sorption process .. Sorption
study has been illustrated in terms of both Freundlich and Langmuir
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