The effect of agitation intensity on alkali-catalyzed methanolysis of sunflower oil
Abstract
The sunflower oil methanolysis was studied in a stirred reactor at different agitation speeds. The measurements of drop size, drop size distribution and the conversion degree demonstrate the effects of the agitation speed in both non-reaction (methanol/sunflower oil) and reaction (methanol/KOH/sunflower oil) systems. Drop size distributions were found to become narrower and shift to smaller sizes with increasing agitation speed as well as with the progress of the methanolysis reaction at a constant agitation speed. During the methanolysis reaction, the Sauter-mean drop diameter stays constant in the initial slow reaction region, rapidly decreases during the fast reaction period and finally reaches the equilibrium level. Due to the fact that the interfacial area increases, one can conclude that the rate of reaction occurring at the interface will also be enhanced progressively. The "autocatalytic" behavior of the methanolysis reaction is explained by this "self-enhancement" of the inter...facial area, due to intensive drop breakage process.
Keywords:
Biodiesel / Kinetics / Methanolysis / Sauter-mean diameter / Sunflower oilSource:
Bioresource Technology, 2007, 98, 14, 2688-2699Publisher:
- Elsevier
Funding / projects:
- This work has been funded by the Ministry of Science and Environmental Protection of the Republic of Serbia (Project TR6742B)
DOI: 10.1016/j.biortech.2006.09.024
ISSN: 0960-8524
WoS: 000247650700009
Scopus: 2-s2.0-34047146614
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Stamenković, Olivera S. AU - Lazić, M.L. AU - Todorović, Z.B. AU - Veljković, V.B. AU - Skala, Dejan PY - 2007 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5522 AB - The sunflower oil methanolysis was studied in a stirred reactor at different agitation speeds. The measurements of drop size, drop size distribution and the conversion degree demonstrate the effects of the agitation speed in both non-reaction (methanol/sunflower oil) and reaction (methanol/KOH/sunflower oil) systems. Drop size distributions were found to become narrower and shift to smaller sizes with increasing agitation speed as well as with the progress of the methanolysis reaction at a constant agitation speed. During the methanolysis reaction, the Sauter-mean drop diameter stays constant in the initial slow reaction region, rapidly decreases during the fast reaction period and finally reaches the equilibrium level. Due to the fact that the interfacial area increases, one can conclude that the rate of reaction occurring at the interface will also be enhanced progressively. The "autocatalytic" behavior of the methanolysis reaction is explained by this "self-enhancement" of the interfacial area, due to intensive drop breakage process. PB - Elsevier T2 - Bioresource Technology T1 - The effect of agitation intensity on alkali-catalyzed methanolysis of sunflower oil EP - 2699 IS - 14 SP - 2688 VL - 98 DO - 10.1016/j.biortech.2006.09.024 ER -
@article{ author = "Stamenković, Olivera S. and Lazić, M.L. and Todorović, Z.B. and Veljković, V.B. and Skala, Dejan", year = "2007", abstract = "The sunflower oil methanolysis was studied in a stirred reactor at different agitation speeds. The measurements of drop size, drop size distribution and the conversion degree demonstrate the effects of the agitation speed in both non-reaction (methanol/sunflower oil) and reaction (methanol/KOH/sunflower oil) systems. Drop size distributions were found to become narrower and shift to smaller sizes with increasing agitation speed as well as with the progress of the methanolysis reaction at a constant agitation speed. During the methanolysis reaction, the Sauter-mean drop diameter stays constant in the initial slow reaction region, rapidly decreases during the fast reaction period and finally reaches the equilibrium level. Due to the fact that the interfacial area increases, one can conclude that the rate of reaction occurring at the interface will also be enhanced progressively. The "autocatalytic" behavior of the methanolysis reaction is explained by this "self-enhancement" of the interfacial area, due to intensive drop breakage process.", publisher = "Elsevier", journal = "Bioresource Technology", title = "The effect of agitation intensity on alkali-catalyzed methanolysis of sunflower oil", pages = "2699-2688", number = "14", volume = "98", doi = "10.1016/j.biortech.2006.09.024" }
Stamenković, O. S., Lazić, M.L., Todorović, Z.B., Veljković, V.B.,& Skala, D.. (2007). The effect of agitation intensity on alkali-catalyzed methanolysis of sunflower oil. in Bioresource Technology Elsevier., 98(14), 2688-2699. https://doi.org/10.1016/j.biortech.2006.09.024
Stamenković OS, Lazić M, Todorović Z, Veljković V, Skala D. The effect of agitation intensity on alkali-catalyzed methanolysis of sunflower oil. in Bioresource Technology. 2007;98(14):2688-2699. doi:10.1016/j.biortech.2006.09.024 .
Stamenković, Olivera S., Lazić, M.L., Todorović, Z.B., Veljković, V.B., Skala, Dejan, "The effect of agitation intensity on alkali-catalyzed methanolysis of sunflower oil" in Bioresource Technology, 98, no. 14 (2007):2688-2699, https://doi.org/10.1016/j.biortech.2006.09.024 . .