Rational conditions of fatty acids obtaining by soapstock treatment with sulfuric acid
DOI:
https://doi.org/10.15587/1729-4061.2021.236984Keywords:
oil and fat industry waste, alkaline neutralization, soapstock, fatty acids, sunflower oilAbstract
As a result of alkaline neutralization of oils, a significant amount of soapstock is formed, the utilization of which creates an environmental and economic problem. The production of fatty acids from soapstock using sulfuric acid decomposition is investigated in this work.
The peculiarity of the work is the determination of regression dependences of the yield and neutralization number of fatty acids on the soapstock processing conditions: temperature and duration.
Soapstock obtained after neutralization of sunflower oil was used as raw material. Soapstock indicators: mass fraction of moisture – 15.4 %, total fat – 71.9 %, fatty acids – 64.5 %, neutral fat – 7.4 %.
Rational conditions of soapstock processing are determined: temperature (90–95) °С, duration 40 min. Under these conditions, the fatty acid yield is 79.0 %, the neutralization number is 180.0 mg KOH/g. Quality indicators of the obtained fatty acids: mass fraction of moisture and volatile substances – 1.8 %, mass fraction of total fat – 97.0 %, cleavage depth – 64.5 % of oleic acid, the presence of mineral acids – no. Fatty acids correspond to fatty acids of the first grade according to DSTU 4860 (CAS 61788-66-7).
An increase in the temperature and duration of soapstock contact with sulfuric acid increases the yield and neutralization number of fatty acids. This is due to a decrease in the viscosity of the reaction medium, an increase in the depth of cleavage of soapstock soaps with sulfuric acid, an increase in the intensity and duration of mass transfer.
The developed rational conditions allow obtaining fatty acids from soapstock, which correspond in composition to fatty acids from refined deodorized sunflower oil.
The results allow solving a number of economic and environmental problems associated with soapstock utilization and can be implemented in oil refineries and fatty acid production
References
- Sytnik, N., Kunitsia, E., Mazaeva, V., Chernukha, A., Kovalov, P., Grigorenko, N. et. al. (2020). Rational parameters of waxes obtaining from oil winterization waste. Eastern-European Journal of Enterprise Technologies, 6 (10 (108)), 29–35. doi: https://doi.org/10.15587/1729-4061.2020.219602
- Strizhenok, A., Ivanov, A. (2021). Monitoring of Air Pollution in the Area Affected by the Storage of Primary Oil Refining Waste. Journal of Ecological Engineering, 22 (1), 60–67. doi: https://doi.org/10.12911/22998993/128873
- Sytnik, N., Kunitsa, E., Mazaeva, V., Chernukha, A., Bezuglov, O., Bogatov, O. et. al. (2020). Determination of the influence of natural antioxidant concentrations on the shelf life of sunflower oil. Eastern-European Journal of Enterprise Technologies, 4 (11 (106)), 55–62. doi: https://doi.org/10.15587/1729-4061.2020.209000
- Kovari, K., Denise, J., Hollo, J. (2006). Seed crushing, oil refining and environmental problem. Olaj. Szap., 45 (2), 45–52.
- Teslenko, A., Chernukha, A., Bezuglov, O., Bogatov, O., Kunitsa, E., Kalyna, V. et. al. (2019). Construction of an algorithm for building regions of questionable decisions for devices containing gases in a linear multidimensional space of hazardous factors. Eastern-European Journal of Enterprise Technologies, 5 (10 (101)), 42–49. doi: https://doi.org/10.15587/1729-4061.2019.181668
- Khedkar, R., Singh, K. (2018). Food Industry Waste: A Panacea or Pollution Hazard? Paradigms in Pollution Prevention, 35–47. doi: https://doi.org/10.1007/978-3-319-58415-7_3
- Molchenko, S. M., Demydov, I. M., Vied, V. Ye. (2015). Oderzhannia zhyrnykh kyslot z soapstoku shliakhom rozkladannia myla karbonatnoiu kyslotoiu. Visnyk Natsionalnoho tekhnichnoho universytetu «KhPI», 7 (1116), 76–82. Available at: http://repository.kpi.kharkov.ua/bitstream/KhPI-Press/15991/1/vestnik_HPI_2015_7_Molchenko_Oderzhannia.pdf
- Levterov, A. M., Levterov, A. A. (2018). Thermodynamic properties of fatty acid esters in some biodiesel fuels. Functional Materials, 25 (2), 308–312. doi: https://doi.org/10.15407/fm25.02.308
- Wang, Y., Ke, L., Peng, Y., Yang, Q., Du, Z., Dai, L. et. al. (2020). Characteristics of the catalytic fast pyrolysis of vegetable oil soapstock for hydrocarbon-rich fuel. Energy Conversion and Management, 213, 112860. doi: https://doi.org/10.1016/j.enconman.2020.112860
- Kondratenko, O. M., Vambol, S. O., Strokov, O. P., Avramenko, A. M. (2015). Mathematical model of the efficiency of diesel particulate matter filter. Naukovyi Visnyk Natsionalnoho hirnychoho universytetu, 6, 55–61. Available at: https://www.scopus.com/record/display.uri?eid=2-s2.0-84959270723&origin=inward&txGid=a41878294c3ff8332ad19932a6bd41ff
- Tripathi, S., Subramanian, K. A. (2017). Experimental investigation of utilization of Soya soap stock based acid oil biodiesel in an automotive compression ignition engine. Applied Energy, 198, 332–346. doi: https://doi.org/10.1016/j.apenergy.2017.02.057
- Chervakov, V. O., Filinskaja, T. G., Kapiton, V. O. (2009). The methods of transesterification feedstock containing of fat by alcoholysis. Problems of Chemstry and Chemical Technologies, 4, 72–79.
- Sánchez Faba, E. M., Ferrero, G. O., Dias, J. M., Eimer, G. A. (2019). Alternative Raw Materials to Produce Biodiesel through Alkaline Heterogeneous Catalysis. Catalysts, 9 (8), 690. doi: https://doi.org/10.3390/catal9080690
- Ostafin, M. M., Lenik, E., Bulski, K., Kielbasa, P., Drozdz, T., Trzyniec, K., Tarniowy, A. (2018). Recovering of the long-chain fatty acids from soapstock. Przemysl chemiczny, 97 (3), 387–392. doi: https://doi.org/10.15199/62.2018.3.9
- Abdikamalova, A. B., Sharipova, A. Sh., Artikova, G. N., Seytnazarova, O. M., Ismaylov, B. M. (2016). Sposoby vydeleniya zhirnyh kislot iz soapstokov. Sovremennye innovatsii, 6 (8), 12–14. Available at: https://cyberleninka.ru/article/n/sposoby-vydeleniya-zhirnyh-kislot-iz-soapstokov
- Demidov, I., Sytnik, N., Mazaeva, V. (2014). Sunflower and problem alternative fuel in Ukraine. Naukovo-tekhnichnyi biuleten Instytutu oliynykh kultur NAAN, 21, 137–146.
- Pospelov, B., Meleshchenko, R., Asotskyi, V., Petukhova, O., Gornostal, S., Harbuz, S. (2019). Development of a self-adjusting method for calculating recurrent diagrams in a space with a scalar product. EUREKA: Physics and Engineering, 5, 10–18. doi: https://doi.org/10.21303/2461-4262.2019.00981
- Chernukha, A., Teslenko, A., Kovalov, P., Bezuglov, O. (2020). Mathematical Modeling of Fire-Proof Efficiency of Coatings Based on Silicate Composition. Materials Science Forum, 1006, 70–75. doi: https://doi.org/10.4028/www.scientific.net/msf.1006.70
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Copyright (c) 2021 Natalia Sytnik, Ekaterina Kunitsia, Viktoria Mazaeva, Viktoriia Kalyna, Andrii Chernukha, Serhii Vazhynskyi, Oleksandr Yashchenko, Murat Maliarov, Oleg Bogatov, Borys Bolibrukh
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