ORALS

SESSION: RecyclingMonAM-R5	Kolomaznik International Symposium (8th Intl. Symp. on Sustainable Materials Recycling Processes & Products)
Mon. 28 Nov. 2022 / Room: Arcadia 2
Session Chairs: Michaela Barinova; Session Monitor: TBA

11:30: [RecyclingMonAM01] OS Plenary
Practical Experience from the Design of Recycling Technology Projects
Karel Kolomaznik¹ ; Juan Carlos Beltran Prieto² ; ¹Tomas Bata University in Zlin, Zlin, Czech Republic; ²Tomas Bata University in Zlin, Faculty of Applied Informatics, ZLIN, Czech Republic;
Paper Id: 98 [Abstract]

The paper deals with selected authors' solutions of recycling technologies for the processing of industrial by-products. The presented technologies specifically include refinery hydrogenation, recycling of wastewater produced by a dairy farm and waste-free processing of solid waste from the leather and food industries [1,2,3]. Proposals of control algorithms based on economic optimization of washing processes are presented [4]. The introduced solutions are briefly supplemented by the theory of transport processes and heterogeneous reaction kinetics, which were involved in projects and industrial implementations [5,6].

References:
[1] K. Kolomaznik, M. Mladek, F. Langmaier, D. Janacova, M. M. Taylor, J. Am. Leather Chem. Assoc. 95 (2000) 55-63.\n[2] K. Kolomaznik, M. Mladek, F. Langmaier, D. Janacova, D. C. Shelly, M. M. Taylor, J. Am. Leather Chem. Assoc. 98 (2003) 487-490.\n[3] K. Kolomaznik, V. Vasek, I. Zelinka, M. Mladek, F. Langmaier, D. Rabinovich, J. Am. Leather Chem. Assoc. 100 ( 2005) 119-123. \n[4] K. Kolomaznik, Z. Prokopova, V. Vasek, D. Bailey, J. Am. Leather Chem. Assoc. 101 (2006) 309-316. \n[5] K. Kolomaznik, J. Pecha, V. Friebrova, D. Janacova, V. Vasek, Heat Mass Transf. 48 (2012) 1505–1512. \n[6] K. Kolomaznik, T. Furst, M. Uhlirova, Can. J. Chem. Eng. 87 (2009) 60-68.

SESSION: RecyclingMonAM-R5	Kolomaznik International Symposium (8th Intl. Symp. on Sustainable Materials Recycling Processes & Products)
Mon. 28 Nov. 2022 / Room: Arcadia 2
Session Chairs: Michaela Barinova; Session Monitor: TBA

12:45: [RecyclingMonAM04] OS
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 Id: 86 [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, H₂O₂ flow rate addition and Fe₂SO₄/H₂O₂ ratio. Samples were taken after the addition of H₂O₂ 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% H₂O₂ added at a flow rate of 5ml/min with a ratio of FeSO₄/H₂O₂ (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>