The Department of Chemical Engineering is discussing a master's thesis on the engineering of chemical reactions for the decomposition of phosphorous organic substances.

 

The Department of Chemical Engineering is discussing a master's thesis on the engineering of chemical reactions for the decomposition of phosphorous organic substances.

The Department of Chemical Engineering at the University of Technology discussed the master's thesis entitled "Engineering of Chemical Reactions for the Decomposition of Phosphorous Organic Substances".

The thesis of student (Muslim Hassan Allawi) aimed to study one of the advanced oxidation processes (AOP), the most important of which is ultrasonic irradiation to remove pollutants from aqueous solutions. An ultrasound device with a fixed frequency of 26.6 kHz was used. Two substances were used in this study, diisopropyl methylphosphonate and malathion. It has been observed during the irradiation processes that both materials are affected by some variables, including pH, initial concentration, time and concentration of carbon tetrachloride additive. Five concentrations of each substance (7, 14, 30, 50 and 80 ppm) were used for diisopropyl methylphosphonate (45, 28, 17, 8.4 ppm) for malathion, at different pH levels (2, 7, and 10)) for both subjects and at different times (90, 80, 60, 45, 30, 15, 0 minutes). The best degradation was observed at the basal degree 10PH for both materials, different concentrations of carbon tetrachloride (0.2, 0.4, 0.6, and 0.8 g/L) were used for (80 ppm diisopropyl methylphosphonate) and (45 ppm for malathion) at a basal temperature of 10 pH. And the study of its decomposition and proved that the best auxiliary concentration for the semi-complete decomposition is 0.8 g/L for each of the two substances and a time of 45 minutes, the decomposition efficiency at that time was 98% for diisopropyl methyl phosphonate and for 60 minutes also the decomposition efficiency at that time was 98% for malathion. The kinetic modeling of (zero, first, and second degree) was studied and it was found that it is of the first degree that produced an R2 correction factor (0.967) greater than the other type and close to one.

The discussion committee consisted of Prof. Dr. Alaa Karim Mohamed as a chairman, and the membership of Assist. Prof. Dr. Farah Talib Jassim and Dr. Manal Afham Touma and under the supervision of Assist. Prof. Dr. Riyad Sadiq Muhammad and Dr. Muhammad Abdul Rahman Muhammad. In addition, the scientific evaluation of the thesis was by Prof. Dr. Saad Hanash Ammar from Al-Nahrain University and Prof. Dr. Sobhi Abdul-Sattar Hassan from Wasit University.

 

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