الفهرس 
Introduction and Literature Review
Zeta-potential measurementOnly 14 pages are availabe for public view
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Abstract
Water is an important and rare commodity in all our life. Due to the growth of the population and industries, many countries over the world face water shortage. Hence, all countries over the world adopting water security strategy by treatment the wastewater and reuse it. Different wastewater treatment technologies have been used such as Chemical oxidation, membrane processes, coagulation, distillation, ion exchange, reverse osmosis, biological treatment, and solvent extraction. Each one has its advantages and limitations in terms of operational costs, energy consumption, operational complexity, effluent quality, land requirements, and health & environmental impact. Nowadays, the sorption process has been nominated as an efficient and cheaper technology for wastewater treatment. Also, nanotechnology has a wide application in the field of wastewater treatment due to high surface area, and high mechanical and thermal properties for nanosorbents, which expected to influence the sorption capacity and increase the removal efficiency of pollutants within a short time. Due to the widespread availability and low cost of agricultural waste, many researchers use it to prepare nanosorbents not only to treat the contamination from wastewater but also to solve agriculture waste disposal problems to farmers.
This study aims to preparation and characterization of nanocomposites (corncob, silica/corncob nanocomposite, and magnetic silica/corncob nanocomposite) from agricultural waste and study the capacity of this sorbents to remove different type of wastewater contaminants such as methylene blue, copper ions, and lead ions and also study the factors that may affect the sorption process.
The proposed study discussed the following:
Preparation of corncob, silica/corncob nanocomposite, and magnetic silica/corncob nanocomposite.
characterization of the prepared nanosorbents by Scanning electron microscopy (SEM), High-resolution transmission electron microscope (HR-TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectrophotometer, Energy dispersive X-ray (EDX), Vibrating sample magnetometer (VSM), and zeta potential measurements.
Studying the sorption capacity of the synthesized sorbents to remove organic dye (methylene blue), and heavy metal ions (Cu2+ and Pb2+) Evaluating the effect of contact time, initial pollutants concentration, pH and sorbent dose to study the removal efficiency and the adsorption capacity of sorbents.
Studying the kinetic and isotherm models for sorption process using nanocomposites.
column study will be evaluated from prepared nanocomposite for removal of Pb2+ ions.
Studying the potential ability of the synthetic nanocomposite to be regenerated and reuse.