Kinetic Study of the Degumming Process of Crude Turpentine Oil Using Phosphoric Acid

Abstract

Our study on degumming, a preliminary treatment commonly used in oil refining, and the specific method of acid degumming has practical implications. We investigate degumming turpentine's mass transfer and chemical reaction using phosphoric acid solutions, providing valuable insights for real-world applications. The experiment was conducted at a specific temperature (40, 50, 60, 70, and 80 °C), involving 100 ml of turpentine with 10 ml of 50% phosphoric acid solution in a stirred three-neck flask. The mixing was performed for 0, 30, 60, 90, and 120 minutes using a mechanical stirrer. The degumming process of turpentine follows a chemical regime, and the model provides a constant value for the mass transfer coefficient (K_cpa). The constant reaction rate in the acid phase (k) increases with temperature. This relationship can be represented by the equation provided. The equation is valid within the temperature range of 313 K to 353 K, with an average relative error of 0.9428.