Production and characterization of different green adsorbents for the removal of free glycerine in the biodiesel purification process
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There is environmental concern due to the high use of oil as a primary fuel, which results in a significant emission of polluting gases, and
one of the most promising solutions involves replacing it with biodiesel. Biodiesel is a fuel that can be produced using waste cooking oil
(WCO) and has become an excellent alternative to ordinary diesel. A crucial stage in the production of biodiesel is the purification process.
Among the various methods used, there are two main ones: the wet purification method, which uses water, and the dry purification
method, which uses ion exchange resins or adsorbents. Dry purification using adsorbents removes contaminants such as water, soap, and
traces of glycerine based on their chemical polarities and acidic and basic properties. Also, it avoids the generation of high volumes of
effluents, and the adsorbents can be reused [1][2].
