الفهرس 
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Abstract
The present work includes chemical studies on the separation and
determination of some metal ions (Cr, Y, Ti and Fe) from some industrial waste
solutions using solvent extraction technique. For this purpose, Alamine 336 and
D2EHPA solvents were employed. All factors (pH, 01 A ratio, shaking time
etc ... ) affecting the extraction of metal ions from simulated synthetic liquor were
extensively investigated and then applied for wastes treatment. Before metal ions
extraction H2S04 acid solution was extracted (95.6%) using 40% Alamine
336/kerosene from the synthetic liquor then stripped (97.2%) with hot water.
from the studied metal ions Cr6+ species were firstly extracted using 2.5%
Alamine 336 Ikerosene at pH; 0.5, O/A ratio; 2 and 5 min shaking time. About
97.7 % from the extracted Cr6+ was stripped using 2% NaOH. it followed by V5+
extraction (95.2%) using 10% Alamine 336 Ikerosene at pH; 2.5, OIA ratio; 2
and 10 min shaking time. The loaded solvent was treated with 2% NaOH for
stripping y5t- (97.6 %). Titanium (IY) species were extracted (98%) using 20%
D2EHPA/kerosene at pH; 0.5, OIA ratio; 2 and 10 min shaking time. About
97.1 % from the loaded Ti4+ was stripped using 5% Na2C03. Finally, pH of the
remained working solution pH was re-increased to 2-3 before being subjected to
Fe3+ extraction (97.3%) using 10% D2EHPAlkerosene at an O/A ratio; 2 and 30
min shaking time. The extracted Fe3+ was stripped using HCl acid.