The Kinetics of Ethanol Volume Change With Variation of Input Volume and Heating Temperature in The Re-Distillation Process of Glucomannan Extraction Residue Using Batch Distillator

Ethanol is commonly used as a solvent in extracting glucomannan from Porang. However, the extraction process often leaves ethanol. The remaining ethanol can be re-distilled to save use of it. re-distillation with input volumes 50L and 100L variations heating temperatures 80°C, 85°C, 90°C. This study aimed analyze effect volume temperature on output determine constant change using kinetics Arrhenius equations. results showed that variation differed significantly volume. k value changes an 90°C respectively were 0.0016, 0.0023, 0.0027 L/min, while was 0.0009, 0.001, 0.0014 L/min. function equation produces activation energy (Ea) 55.83 kJ/mol 46.94 kJ/mol, collision frequency (A) 3.03x105/min 7.7x103/min.Keywords: Distillation, ethanol, glucomannan, arrhenius model,