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العنوان
Surfactants-mediated extraction of water contaminants :
المؤلف
Al-rabasi, Ammar Saif Abdulqader Ghanem.
هيئة الاعداد
باحث / عمار سيف عبدالقادر غانم الرباصي
مشرف / ماجدة على عبدالعزيز عقل
مشرف / احمد فتحى ملوك
مناقش / عادل زكى حافظ
الموضوع
Nanostructured materials. Chemistry. Water contaminants.
تاريخ النشر
2020.
عدد الصفحات
online resource (147 pages) :
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الكيمياء
تاريخ الإجازة
4/12/2020
مكان الإجازة
جامعة المنصورة - كلية العلوم - قسم الكيمياء
الفهرس
Only 14 pages are availabe for public view

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Abstract

The study included a fast and accurate method for separating the ions of the elements cobalt and palladium by flotation separation method using (HBBTC) as a chelating material as it works to collect the ions of these elements in the form of complexes in the presence of the surfactants which is oleic acid, and its determination by the flame atomic absorption spectrometry device by as well as the inductively coupled plasma atomic emission spectrometry, respectively, In turn, the factors affecting the efficiency of the separation process were studied, in order, to arrive at the optimum conditions for separation. It was found that to float 3 x 10-5 mol/L of cobalt, it was necessary to add 2 x 10-4 mol/L of oleic acid and 6 x 10-5 mol/L of (HBBTC) complex at a value of pH 6.0 at room temperature. (25 ± 2 ° C) detection limits were 2.5 ng / L and 1.0% standard deviation. Whereas, to float 1 x 10-5 mol/L of palladium, an addition of 2 x 10-4 mol/L of oleic acid and 2 x 10-5 of compound (HBBTC) at a pH value of 5.0 and room temperature (25 ± 2 ° C), detection limits were 6 ng / L and 0.9% for standard deviation. The separation was applied by flotation on real samples of Nile water, tap water, and seawater. The study also included the extraction of copper ion using a cloud point extraction, and in this method, one of the organic chelates, which is (HBBTC) was used as a compounding agent for copper ions, and the formation of a hydrophobic compound is extracted in the rich layer by the cationic surfactant (CTAB) in the presence of potassium chloride, at Room temperature (25 ± 2° C), before adding a small amount of ethanol acidified with nitric acid and then estimating it by the flame atomic absorption spectrometry. Also, studied all factors affecting the separation process. It was found that at a pH of 7.0, 3 x 10-5 mol/L of copper ion can be extracted by adding 3 x 10-5 of the chelating substance (HBBTC) in the presence of 3.84 x 10-4 mol/L of surfactants (CTAB) after adding 0.18 mol/L of potassium chloride at room temperature (25 ± 2 ° C), for five minutes, after that the separation into two phases, after separation using a centrifuge for ten minutes, the detection limits were 0,9 ng/liter and 1, 8 standard deviations. This method was applied to extract copper in real samples of Nile, tap, and seawater. The study also included biological studies of HBBTC and its complexes and biological effects on some types of bacteria and fungi.