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Removal of Diazinon from aqueous solution by electrocoagulation process using aluminum electrodes
Ali Akbar Amooey,Shahram Ghasemi,Seyed Mohammad Mirsoleimani-azizi,Zohreh Gholaminezhad,Mohammad Javad Chaichi 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.6
Electrocoagulation (EC) is an electrochemical method to treat polluted wastewaters and aqueous solutions. In this paper, the removal of Diazinon was studied by EC on aluminum electrode. The effect of several parameterssuch as initial concentration of Diazinon, current density, solution conductivity, effect of pH, and electrolysis time wereinvestigated on EC performance. The obtained results showed that the removal efficiency of EC depends on the currentdensity, initial concentration of Diazinon and electrolysis time. The optimum pH is 3 and also the solution conductivityhas no significant effect on removal efficiency.
Soroush Masoudi,Mohammad Javad Esfahani,Farshid Jafarian,Seyed Ali Mirsoleimani 한국정밀공학회 2023 International Journal of Precision Engineering and Vol.10 No.1
The increasing needs for the production of high quality parts require the use of new techniques to produce parts with higher precision. One of these modern techniques is minimum quantity lubricant (MQL) machining. In this paper, the effects of MQL, wet and dry machining on surface characteristic and geometric tolerances in turning of parts made of AISI 1045 steel were investigated. The influences of machining parameters i.e. feed rate and cutting speed as well as MQL parameters, namely air pressure and flow rate on surface topography, cutting force and cylindricity tolerance were studied. In addition, dry, wet, and MQL machining were compared to study the performance of different cooling systems. In the final step, the Pugh matrix approach was implemented to compare different cooling strategies in terms of sustainable production. According to the obtained results, MQL machining significantly improved the output parameters in AISI 1045 steel turning. By using MQL system, not only was the topography of machined surfaces improved and parts with tighter tolerances produced, but sustainability criteria were also improved. Based on sustainability assessment results, MQL turning was superior to wet and dry conditions in terms of the environmental impact, operator heath, manufacturing economy and production efficiency.