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I received my B.Sc. in 1980 (Kuwait University), and my M.Sc. in 1983 (Organic Chemistry, Kuwait University, 1983). I received my Ph.D. in 1995 (Organic Chemistry, York University, United Kingdom). My research interest is organic chemistry, heterocyclic chemistry, photoisomerization, and photochemistry My work at the chemical and biological Pollution Protection Committee centred at: Risk assessment of chemicals. Supervising the process of chemical and biological disposals. Giving training courses on chemical safety. Counseling and solving problems with chemical and biological issues. Treating all types of chemical spills. Writing reports of accidents associated with chemical spills and chemical disposals.
The innovation and development of water purification methods have been at the center of extensive research for several decades. Many nanoparticles are frequently seen in industrial waste water. In this research, zinc oxide nanoparticles (ZnO) were synthesized following an autocombustion method with and without honey capping. Structural crystallinity and bonding structure were examined via X-ray diffraction (XRD) analysis and Fourier transform infrared (FTIR) spectroscopy. Optical behavior was analyzed using ultraviolet–visible (UV–Vis) spectroscopy and photoluminescence (PL). Size estimation and surface morphology were studied using scanning electron microscopy (SEM), while energy-dispersive spectroscopy (EDS) was performed to analyze the sample purity and elemental composition. The photocatalytic degradation of methylene blue (MB) by ZnO was assessed as it is an efficient water treatment process with high potential. The biological activity of ZnO nanoparticles was also investigated in terms of antibacterial and antifungal activities against different bacterial and fungal species. Surprisingly, the as-synthesized ZnO nanoparticles were found to be substantially bioactive compared to conventional drugs. Honey-mediated nanoparticles displayed 86% dye degradation efficiency, and that of bare ZnO was 60%. Therefore, the involvement of honey in the synthesis of ZnO nanoparticles has great potential due to its dual applicability in both biological and environmental remediation processes.
M. Sharmila; R. Jothi Mani; Abdul Kader; Awais Ahmad; Gaber E. Eldesoky; Adel E. M. Yahya; Aboud Ahmed Awadh Bahajjaj. Photocatalytic and Biological Activity of ZnO Nanoparticles Using Honey. Coatings 2021, 11, 1046 .
AMA StyleM. Sharmila, R. Jothi Mani, Abdul Kader, Awais Ahmad, Gaber E. Eldesoky, Adel E. M. Yahya, Aboud Ahmed Awadh Bahajjaj. Photocatalytic and Biological Activity of ZnO Nanoparticles Using Honey. Coatings. 2021; 11 (9):1046.
Chicago/Turabian StyleM. Sharmila; R. Jothi Mani; Abdul Kader; Awais Ahmad; Gaber E. Eldesoky; Adel E. M. Yahya; Aboud Ahmed Awadh Bahajjaj. 2021. "Photocatalytic and Biological Activity of ZnO Nanoparticles Using Honey." Coatings 11, no. 9: 1046.
Greenhouse gas (GHG) pollution is considered one of the challenging concerns in industrial plants, and to emit the appropriate designation in nitrogen oxide reduction, it is required to implement proper numerical simulation procedures. In this study, ANSYS Fluent® software is used as dynamic software to solve heat and mass flow transfer numerically by considering non-structured networks for complex geometries. Dry nitrogen oxide burners have an additional thermocouple to provide an extra fuel pathway to combine with air. Then, standard K-ε is used in the numerical simulations to calculate thermal efficiency in combustion processes for turbulent flow regimes. It can cause the removal of 50% of nitrogen oxide into the atmosphere. Furthermore, by the increase of temperature, nitrogen oxide concentration has been increased in the system. After 1975 K, Fuel has been changed to dry fuel, and therefore nitrogen oxide concentration increased because the steam can provide a relatively non-combustible compound increase than fuel. On the other hand, regarding the water volume increase at inlet steam, nitrogen oxide volume percentage has been decreased dramatically, especially in the first periods of water volume increase. Consequently, when the steam percentage is increased instead of water, nitrogen oxide reduction is increased. Moreover, our simulation results have a proper match with Gibbs energy equilibrium.
Ir Sarjito; Marischa Elveny; Abduladheem Turki Jalil; Afshin Davarpanah; Majda Alfakeer; Aboud Ahmed Awadh Bahajjaj; Mohamed Ouladsmane. CFD-based simulation to reduce greenhouse gas emissions from industrial plants. International Journal of Chemical Reactor Engineering 2021, 1 .
AMA StyleIr Sarjito, Marischa Elveny, Abduladheem Turki Jalil, Afshin Davarpanah, Majda Alfakeer, Aboud Ahmed Awadh Bahajjaj, Mohamed Ouladsmane. CFD-based simulation to reduce greenhouse gas emissions from industrial plants. International Journal of Chemical Reactor Engineering. 2021; ():1.
Chicago/Turabian StyleIr Sarjito; Marischa Elveny; Abduladheem Turki Jalil; Afshin Davarpanah; Majda Alfakeer; Aboud Ahmed Awadh Bahajjaj; Mohamed Ouladsmane. 2021. "CFD-based simulation to reduce greenhouse gas emissions from industrial plants." International Journal of Chemical Reactor Engineering , no. : 1.
(1 − x)(Na0.5Bi0.5)TiO3–xBi(Mg2/3Nb1/3)O3 ceramics with x = 0.00 mol.% (0BMN), 0.01 mol.% (1BMN), 0.03 mol.% (3BMN), and 0.05 mol.% (5BMN) were synthesized using a solid-state processing technique. The thermogravimetric analysis (TGA) of uncalcined samples up to 730 °C showed that the maximum weight loss was observed for 3BMN, whereas the minimum weight loss was attributed to the 0BMN sample. After that, calcination was performed at 800 °C for 4 h. The XRD of calcined samples showed the successful formation of the perovskite phase with no impurity phases. 1BMN and 3BMN samples showed some of the lattice strain; however, a morphotropic phase boundary (MPB) existed around x = 0.03 between the rhombohedral and tetragonal structure. The TGA of the green pellets showed weight loss up to the sintering temperature (1100 °C) and during the 3 h holding period. 5BMN showed the maximum weight loss up to sintering temperature, as well as during the holding period, whereas 0BMN displayed the minimum weight loss up to sintering temperature, as well as some weight gain during the holding period. The relative permittivity (εr) was maximum at low frequencies, but the addition of BMN improved the εr. The frequency dependence of dielectric loss (tanδ) showed that the maximum loss was observed for 3BMN at lower frequencies, and 5BMN showed the maximum loss at higher frequency among all samples.
Syed Afzal; Fayaz Hussain; Sajid Siyal; Muhammad Javed; Muhammad Saleem; Muhammad Imran; Mohammed Assiri; Aboud Bahajjaj; Ayman Ghfar; Murefah Al-Anazy; Mohamed Ouladsmane; Saad Al-Tamrah; Shafaqat Ali. Weight Loss during Calcination and Sintering Process of Na0.5Bi0.5TiO3–Bi1/2(Mg2/3Nb1/3)O3 Composite Lead-Free Piezoelectric Ceramics. Coatings 2021, 11, 676 .
AMA StyleSyed Afzal, Fayaz Hussain, Sajid Siyal, Muhammad Javed, Muhammad Saleem, Muhammad Imran, Mohammed Assiri, Aboud Bahajjaj, Ayman Ghfar, Murefah Al-Anazy, Mohamed Ouladsmane, Saad Al-Tamrah, Shafaqat Ali. Weight Loss during Calcination and Sintering Process of Na0.5Bi0.5TiO3–Bi1/2(Mg2/3Nb1/3)O3 Composite Lead-Free Piezoelectric Ceramics. Coatings. 2021; 11 (6):676.
Chicago/Turabian StyleSyed Afzal; Fayaz Hussain; Sajid Siyal; Muhammad Javed; Muhammad Saleem; Muhammad Imran; Mohammed Assiri; Aboud Bahajjaj; Ayman Ghfar; Murefah Al-Anazy; Mohamed Ouladsmane; Saad Al-Tamrah; Shafaqat Ali. 2021. "Weight Loss during Calcination and Sintering Process of Na0.5Bi0.5TiO3–Bi1/2(Mg2/3Nb1/3)O3 Composite Lead-Free Piezoelectric Ceramics." Coatings 11, no. 6: 676.