Читать книгу Handbook of Biomass Valorization for Industrial Applications - Группа авторов - Страница 70

As discussed earlier, the crude glycerol from bio-diesel industries contains a large number of impurities and cannot be used in this form. Glycerol purification is important for removing unwanted impurities and enhancing its usability for various applications. There are several steps for the purification of crude glycerol that gives an 80–95% purity level. The commonly used steps for removing major impurities are neutralization, vacuum distillation, centrifugation, adsorption, etc. [14].