الفهرس 
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Abstract
The aim of the research is to test and determine the amount of glycerol separating from biodiesel by using new technology whereas the use of gravity technique is not appropriate solution for production continuous flow. So In this study a new technique was used to separate glycerol from biodiesel/glycerol mixture via an electrostatic field caused by a high voltage with low amperage of AC current (3.6kV- 38mA; 5.4kV- 20mA and 7.2kV-16mA) under three levels of span between electrodes 20; 40 and 60 mm fore three tank capacities of waste vegetable oil of 2.5; 5 and 10 liters.
In this technique, the process of coagulation particles or drops of glycerol in “biodiesel/glycerol” mixture from an electrostatic field is done. And took time of 120, 180, 210 s to complete glycerol separating by using high voltage 7.2kV and span between electrodes of 20 mm for amount of mixture of 2.5; 5 and 10 liters respectively. This phenomenon may be explained that increasing in voltage leads to a strengthening of electrostatic field and accelerating of the glycerol particles to drops, consequentially to separate glycerol from (biodiesel/glycerol) mixture. The reduction in energy usage by the system seems to correlate with the separation of the glycerin in the layer between the two electrodes.
Data showed that the lowest electrodes span translate to reduce energy consumption and as that increase the high voltage effect positively on energy consumption. When by used high voltage 7.2kV the energy consumption recorded 3.84; 5.76 and 6.72 W at quantity of samples of 2.5; 5 and 10 liters respectively under 20mm electrodes span.
The results indicated that electrode distance and voltage and current intensity were important factors affecting the time required for separation process. Using high voltage method compared to gravity method due separation process in time less than a minutes.