“…Considering that the minimum water to biodiesel ratio required for the biodiesel wet washing using conventional method is 3:1 (V/V %), it is concluded that results obtained in this study can affect the consumed water content for biodiesel wet washing up to 75%. From an economic perspective, the biodiesel producing costs can be reduced, and the production of this fuel can be more costeffective [63]. Also, the values suggested by the software were experimentally tested in the current study, and the obtained 4% difference can validate the predictability power of the model.…”