Investigation of the properties of oil at the bleaching unit of an oil refinery.

摘要: Abstract Color removal from neutralized sunflower oil was studied with different kinds of commercial bleaching earths. The effect changes in time (25 and 35 min), temperature (80–125 °C), earth dosage (0.1–0.9% by weight) on color, chlorophyll carotene concentrations, oxidation degree were investigated. To obtain adsorption curves coloring compounds adsorbed onto activated earths, the Langmuir Freundlich equations used, constant parameters correlation coefficient R calculated for each type earth, color explained both isotherms. It observed that an increase decreases color. Its state, however, is complex related to primary secondary products. In addition, seems decrease adsorptions. Generally, beyond equilibrium considered useless unwanted components. This study also confirms this claim reveals peroxide value does not indicate state completely.