" Study of Effective Removal for some Heavy Metals from its Aqueous Solution using Mesoporous Silica"

The discussion committee consisted of:

t Prof. Dr. Saadia Ahmed Zahir - University of Baghdad - College of Science for Girls- Presiden

 Prof. Dr. Firas Fadhel Ali - University of Anbar - College of Education for Girls - Member

 Assist. Prof. Dr. Muthanna Mohammed Sarhan - University of Anbar - College of Education for Pure Sciences - Member

Assist. Prof. Dr. Mazen Abdul Hamid Abdul Qader - University of Anbar - College of Sciences - member

 Assist. Prof. Dr.  Wahran Munim Saud - University of Anbar - College of Sciences - member and supervisor

This study included the preparation of mesoporous silica using a chemical source and a natural source. The mesoporous silica (prepared by both methods) was characterized using FTIR, FESEM, XRD and TGA techniques. This study aims to remove heavy metal ions (cobalt, nickel and zinc ions) present in the wastewater of Ramadi city, which is a major concern due to its increasing levels in aquatic environments. The highly hazardous heavy metals have the ability to accumulate in the human body by passing through the food chain. The experimental data (Langmuir, Freundlich, Temkin) were studied and it was concluded that the linear relationship (Langmuir and Freundlich) curve models are the most suitable for the removal of cobalt, nickel and zinc ions. Analytical applications were carried out using the prepared mesoporous silica, such as the concentration method to study the removal of low concentrations of cobalt, nickel and zinc ions using atomic absorption spectroscopy