The College of Education for Pure Sciences discusses a master’s thesis entitled (Removing the dyes of Crystal Violet and Coomassie Brilliant Blue G-250 from its aqueous solutions by adsorption on Iraqi porcelain rocks and their axial shape)

Master thesis discussion

The Department of Chemistry at the College of Education for Pure Sciences at the University of Karbala discussed a master’s thesis tagged (removing the dyes of Crystal Violet and Coomassie Brilliant Blue G-250 from its aqueous solutions by adsorption on Iraqi porcelain rocks and their axial shape) by the student (Saad Omran Musa) and under the supervision of Prof.Dr. Munir Abdul-Aali Abbas Al-Daami, on Sunday 23/5/2021, and the aim of the message was the possibility of using Iraqi porcelain rocks and their axial form (porcelain polymer – melamine – formaldehyde) in removing the two dyes Crystal Violet and Coomassie Brilliant Blue G – 250 in Its aqueous solutions and the study of the best conditions for the removal process represented by (contact time, weight of adsorbant surface, pH, temperature and ionic strength). Calculation of the thermodynamic functions of the removal process (enthalpy of the removal process H, entropy of the removal process S and compression energy of the removal process G), as well as the study of adsorption isotherms and their applicability with the Lancmeier and Frendelsch equations. The study concluded, the possibility of using the surface of the Iraqi porcelain rocks, which are available in large economic quantities, and their pivotal shape is to remove the Crystal Violet and CBBG-250 pigments from their aqueous solutions. The removal efficiency of the two dyes, Crystal Violet and CBBG-250, is influenced by factors (equilibrium time, dye concentration, surface amount, acidity function, ionic intensity, temperature), and the equilibrium data of the two dyes show that they are in good agreement with FRD isotherms. The isotherm form of the dye is S-shaped according to the Giles classification. Thermodynamic functions, the process of adsorption of Crystal Violet and CBBG-250 was found. The discussion resulted in several recommendations, including: In view of the increase in the level of pollution in the world, it will be useful to conduct studies on the adsorption capacity of the Iraqi porcelain rocks and their pivotal form used in research for many of the organic and inorganic pollutants that are present in the water of rivers and the wastes of refineries and laboratories. The polluted water coming out of the industrial units contains other types of polluting dyes. Therefore, studying the adsorption of other types on the surface of the Iraqi porcelain rocks and their axial shape will be of importance in the fields of water purification. The Iraqi porcelain rocks and their axial form can be used in studying their ability to adsorb toxic heavy metal ions and make a comparison in the adsorption of Iraqi porcelainic rocks and their axial shape for toxic heavy metal ions. The student has obtained the recognition of excellence.