| [Solid and liquid wastes from industrial processes: Innovations in material recovery and environmental protection] Evaluation Of Parameters Affecting Glycerol Oxidation Evaluation Of Parameters Affecting Glycerol Oxidation Juan Carlos Beltran Prieto1; Karel Kolomaznik2; 1TOMAS BATA UNIVERSITY IN ZLIN, FACULTY OF APPLIED INFORMATICS, ZLIN, Czech Republic; 2TOMAS BATA UNIVERSITY IN ZLIN, Zlin, Czech Republic; PAPER: 86/Recycling/Regular (Oral) SCHEDULED: 12:45/Mon. 28 Nov. 2022/Arcadia 2 ABSTRACT: <p>Biodiesel is a renewable fuel produced from vegetable oils such as rapeseed oil, sunflower oil, and soybean oil, as well as used cooking oils and animal fats [1]. Biodiesel production is, in fact, a complex process in which the glycerin that is generated as a byproduct during the production process can be used for both technical and pharmaceutical applications [2]. The availability of raw glycerin has been increasing significantly in recent years, but the demand for the product has largely remained unchanged. This excess supply and limited demand have caused the raw glycerin prices to stay low. As a result, it is important to find new applications and alternatives for the valorization of this byproduct generated from biodiesel industry [3]. Several studies have been reported aiming to transform glycerol into added-value products. However, little research has been performed on glycerol oxidation using Fenton´s oxidation process. In this work, Fenton catalyst was used to perform the oxidation of glycerol under controlled conditions of temperature, H<sub>2</sub>O<sub>2</sub> flow rate addition and Fe<sub>2</sub>SO<sub>4</sub>/H<sub>2</sub>O<sub>2</sub> ratio. Samples were taken after the addition of H<sub>2</sub>O<sub>2</sub> at different intervals of time and were analyzed by High Performance Liquid Chromatography. Glyceraldehyde was quantified as the main oxidation product (32% conversion and 45% selectivity) after 70% of glycerol conversion using 0.5% H<sub>2</sub>O<sub>2</sub> added at a flow rate of 5ml/min with a ratio of FeSO<sub>4</sub>/H<sub>2</sub>O<sub>2</sub> (mol/mol) between 4 and 0,33. Additional compounds detected were dihydroxyacetone, glyceric acid and glycolic acid.</p> References: <p>[1] A. Demirbas S. Karslioglu, Eerg Source Part A. 29 (2007) 133-141. [2] L.J. Konwar, J.P Mikkola, N. Bordoloi, R. Saikia, R. S. Chutia, R. Kataki, Waste Biorefinery, Potential and Perspectives. (2018) 85-125. [3] A. Rodrigues, J.C. Bordado, R. G. dos Santos. Energies, 10 (2017) 1-36</p> |
