Document Details
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Document Type |
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Thesis |
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Document Title |
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New Solid phase Extractants Based on Activated Carbon for Selective Separation of Hazardous Materials from Aqueous Solutions مستخلصات صلبة جديدة باستخدام الكربون النشط للفصل الانتقائي للمواد الخطرة من الأوساط المائية |
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Subject |
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Chemistry department |
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Document Language |
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Arabic |
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Abstract |
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Water pollution causes both health and environmental problems, especially the pollution of fresh water. . Phenols and its derivatives are one of the most common organic environmental contaminants. They are vastly used as intermediates in the synthesis of plastics, colors, pesticides, insecticides. Most of these compounds are recognized as carcinogens. Heavy metal ions, such as Hg(II) and Pb(II) are considered to be non-biodegrade, and attracted more attention due to its toxicity, persistent in nature particularly, even at low concentrations. The most frequently employed methods for separation are liquid–liquid extraction , ion exchange, chemical precipitation and solid phase extraction (SPE). SPE has been widely used for environmental application due to its advantages such as simplicity, flexibility, economic and rapid. Many sorbent have been used for separation including silica gel, alumina, carbon nanotubes and cellulose. Activated carbon is still by far the most important sorbent in current use because of its large surface area, high adsorption capacity, porous structure, selective adsorption and high purity standards. In this thesis, a new solid phases extractants were prepared using activated carbon as a solid support: activated carbon metalized iron(III) (AC-Fe), activated carbon immobilized Erichrome Blue Black as a complexing agent (AC-EBB), its metalized form(AC-EBB-Fe) and activated carbon modified by arsenazo (III) (AC-AZ),. Then, the new sorbents were characterized by using FT-IR, SEM and by calculate surface coverage. The new sorbents were apply for removal mercury, lead and organic compound 2-chlorophenol. The effect of different solution conditions such as pH, initial concentration and contact time on the adsorption efficiency were studies. Finally, validation and application for separation and determination of the targeted pollutants in real samples. Generally, the new sorbents appear high adsorption capacity, selectivity, fast kinetics and ability of use them in environmental applications. |
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Supervisor |
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Dr. Hassan M. Albishri |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1433 AH
2012 AD |
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Co-Supervisor |
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Prof. Dr. Ezzat M. Soliman |
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Added Date |
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Sunday, February 5, 2012 |
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Researchers
| مها غازي بترجي | Batterjee, Maha Gazi | Researcher | Master | |
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