University of Tehran Press Iranian Journal of Biosystem Engineering 2008-4803 51 3 2020 11 21 Ultrasonic Production of Plant Nutrients Mist to Use in Aeroponic Systems: Feasibility and Investigation of Some Effective Parameters Ultrasonic Production of Plant Nutrients Mist to Use in Aeroponic Systems: Feasibility and Investigation of Some Effective Parameters 585 598 78878 10.22059/ijbse.2020.295739.665263 FA Amir Hossein Mirzabe PHD student, Department of Mechanics of Biosystem Engineering, Faculty of Engineering & Technology, College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran Ali Hajiahmad Assistant Professor, Department of Mechanics of Biosystem Engineering, Faculty of Engineering & Technology, College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran Ali Fadavi Associate Professor, Department of Food Technology Engineering, College of Aboureyhan, University of Tehran, Tehran, Iran Shahin Rafiee Professor, Department of Mechanics of Biosystem Engineering, Faculty of Engineering & Technology, College of Agriculture & Natural Resources, University of Tehran, Karaj, Iran Journal Article 2020 01 11 Common fog production methods in aeroponic systems have some the disadvantages and limitations. So, an initial study was carried out to assess the feasibility to use the fog production technology through ultrasound. The effect of four independent variables, namely, over piezoelectric fluid head at three levels of 20, 30 and 40 mm, three levels of reservoir dimensions, three levels of piezoelectric location at the bottom of the reservoir, and fertilizer concentration in solution at four levels of 0, 2.5, 5, and 7.5 g.L^-1 on fog production rate, electrical conductivity changes, and total dissolved solids as dependent variables were investigated. The effects of three variables of concentration, piezoelectric position and reservoir dimensions on the rate of fog production were significant at 1% probability level. Also, the effect of fluid head was significant at probability level of 5%. The results indicated that the water-soluble nutrients could be transported better by ultrasound at a certain range of soluble concentrations. Common fog production methods in aeroponic systems have some the disadvantages and limitations. So, an initial study was carried out to assess the feasibility to use the fog production technology through ultrasound. The effect of four independent variables, namely, over piezoelectric fluid head at three levels of 20, 30 and 40 mm, three levels of reservoir dimensions, three levels of piezoelectric location at the bottom of the reservoir, and fertilizer concentration in solution at four levels of 0, 2.5, 5, and 7.5 g.L^-1 on fog production rate, electrical conductivity changes, and total dissolved solids as dependent variables were investigated. The effects of three variables of concentration, piezoelectric position and reservoir dimensions on the rate of fog production were significant at 1% probability level. Also, the effect of fluid head was significant at probability level of 5%. The results indicated that the water-soluble nutrients could be transported better by ultrasound at a certain range of soluble concentrations. https://ijbse.ut.ac.ir/article_78878_63f01d7f0bcd39142c17962c9279d41a.pdf