Development and Evaluation of the Operational Parameters of a Rotary Oven

Developing an efficient rotary oven that is capable of addressing the issue of long baking duration and uneven heating distribution during baking could aid in encouraging indigenous use of the oven by small and medium scale bakeries in developing countries. This study aimed to develop and evaluate the performance of a rotary oven. Taguchi experimental design was used to investigate the influence of oven temperature (160, 180, 200°C) and oven rack speed (0, 10, 20 rpm) on the physical properties (baking time, mass, surface area, specific volume and density) of bread produced from the rotary oven. The baking capacity and efficiency of the rotary oven were 16 kg h-1 and 94%, respectively. Investigation showed that baking time ranges from 20 to 82 min, bread mass (884 to 925.7 g), surface area (1050 to 1370 cm2 ), specific volume (2.36 to 3.70 cm3 g -1 ) and density (0.25 to 0.39 g cm-3 ), respectively. The optimum baking time (20 min) was achieved at 200°C oven temperature and 10 rpm oven rack speed. The oven could be adopted for both domestic and industrial production of bread and other bakery products. Keywords: Bread, oven temperature, oven rack speed, taguchi, rotary oven.

Synthesis and Characterization of Mn doped ZnO Nanoparticles and Degradation of Pyridine in a Batch Reactor Using: Taguchi Experimental Designing & Molecular Mechanic Simulation

In this study, the review and synthesis of ZnO and Mn-doped ZnO are discussed. ZnO is a substance that, because of its high potential in various applications such as the manufacture of solar cells, gas sensors, chemical absorbents, optical and electrical instruments, etc., is taken into consideration. ZnO and various levels of manganese (Mn) - doped ZnO were synthesized by the Sol-gel method. Characterization was carried out by XRD and SEM. Using Taguchi experimental design by software Qualitek-4. Optimum is determined, and this case was investigated by varying the time parameter. Photodegradation of Pyridine under visible light in a batch reactor by un-doped and doped ZnO. The optimal concentration of 6% Mn and calcined at 350 ° C for 3 hr was introduced. The curve map of broadened partial DOS (PDOS) and overlap DOS (OPDOS) for 6% and 10% Mn-doped ZnO have also been plotted and comprised of experimental data.