Modified eggshell catalyst for transesterification of sunflower oil: The effects of catalyst loading on FAMEs content
Abstract
Modified highly active CaO catalyst (ESCHC-600) derived from waste chicken eggshells were prepared and used in the transesterification of sunflower oil. Eggshells were subjected to calcination-hydration-calcination (CHC) cycles described in detail previously [1]. After CHC treatments, highly active CaO was obtained, which indicates its great potential for biodiesel synthesis. The transesterification reaction was carried out in a batch reactor at 60 ºC, methanol to oil molar ratio of 12:1, and different catalyst concentrations ranging from 2 to 8 wt%. Fatty acid methyl esters (FAMEs) content was determined by the HPLC analytical technique. The highest triacylglycerols (TAGs) conversion to FAMEs was achieved at a catalyst loading of 4 wt% (Fig. 1a). A further increase in catalyst loading (> 4 wt%) led to a decrease in TAGs conversion. The higher catalyst loadings (6 and 8 wt%) limited mass transfer of the TAGs and reaction products (FAMEs, DAGs and MAGs) due to the higher reaction mixtur...e density and viscosity of the complex multiphase system. Compared to raw eggshell calcined at 900 ºC (ES-900) (Fig. 1b), the synthesized ESCHC-600 catalyst showed a higher activity, which could be attributed to a more favourable pore structure of CHC treated catalyst and better availability of the active sites.
Keywords:
CaO catalyst / transesterification / FAMESource:
Book of abstracts - Seventh Conference of the Young Chemists of Serbia, 2019Publisher:
- Belgrade : Serbian Chemical Society
Funding / projects:
Note:
- Conference of the Young Chemists of Serbia, Belgrade, 2nd November 2019
Collections
Institution/Community
IHTMTY - CONF AU - Pavlović, Stefan AU - Milovanović, Biljana AU - Paunović, Anđela PY - 2019 UR - https://cer.ihtm.bg.ac.rs/handle/123456789/3779 AB - Modified highly active CaO catalyst (ESCHC-600) derived from waste chicken eggshells were prepared and used in the transesterification of sunflower oil. Eggshells were subjected to calcination-hydration-calcination (CHC) cycles described in detail previously [1]. After CHC treatments, highly active CaO was obtained, which indicates its great potential for biodiesel synthesis. The transesterification reaction was carried out in a batch reactor at 60 ºC, methanol to oil molar ratio of 12:1, and different catalyst concentrations ranging from 2 to 8 wt%. Fatty acid methyl esters (FAMEs) content was determined by the HPLC analytical technique. The highest triacylglycerols (TAGs) conversion to FAMEs was achieved at a catalyst loading of 4 wt% (Fig. 1a). A further increase in catalyst loading (> 4 wt%) led to a decrease in TAGs conversion. The higher catalyst loadings (6 and 8 wt%) limited mass transfer of the TAGs and reaction products (FAMEs, DAGs and MAGs) due to the higher reaction mixture density and viscosity of the complex multiphase system. Compared to raw eggshell calcined at 900 ºC (ES-900) (Fig. 1b), the synthesized ESCHC-600 catalyst showed a higher activity, which could be attributed to a more favourable pore structure of CHC treated catalyst and better availability of the active sites. PB - Belgrade : Serbian Chemical Society C3 - Book of abstracts - Seventh Conference of the Young Chemists of Serbia T1 - Modified eggshell catalyst for transesterification of sunflower oil: The effects of catalyst loading on FAMEs content UR - https://hdl.handle.net/21.15107/rcub_cer_3779 ER -
@conference{ author = "Pavlović, Stefan and Milovanović, Biljana and Paunović, Anđela", year = "2019", abstract = "Modified highly active CaO catalyst (ESCHC-600) derived from waste chicken eggshells were prepared and used in the transesterification of sunflower oil. Eggshells were subjected to calcination-hydration-calcination (CHC) cycles described in detail previously [1]. After CHC treatments, highly active CaO was obtained, which indicates its great potential for biodiesel synthesis. The transesterification reaction was carried out in a batch reactor at 60 ºC, methanol to oil molar ratio of 12:1, and different catalyst concentrations ranging from 2 to 8 wt%. Fatty acid methyl esters (FAMEs) content was determined by the HPLC analytical technique. The highest triacylglycerols (TAGs) conversion to FAMEs was achieved at a catalyst loading of 4 wt% (Fig. 1a). A further increase in catalyst loading (> 4 wt%) led to a decrease in TAGs conversion. The higher catalyst loadings (6 and 8 wt%) limited mass transfer of the TAGs and reaction products (FAMEs, DAGs and MAGs) due to the higher reaction mixture density and viscosity of the complex multiphase system. Compared to raw eggshell calcined at 900 ºC (ES-900) (Fig. 1b), the synthesized ESCHC-600 catalyst showed a higher activity, which could be attributed to a more favourable pore structure of CHC treated catalyst and better availability of the active sites.", publisher = "Belgrade : Serbian Chemical Society", journal = "Book of abstracts - Seventh Conference of the Young Chemists of Serbia", title = "Modified eggshell catalyst for transesterification of sunflower oil: The effects of catalyst loading on FAMEs content", url = "https://hdl.handle.net/21.15107/rcub_cer_3779" }
Pavlović, S., Milovanović, B.,& Paunović, A.. (2019). Modified eggshell catalyst for transesterification of sunflower oil: The effects of catalyst loading on FAMEs content. in Book of abstracts - Seventh Conference of the Young Chemists of Serbia Belgrade : Serbian Chemical Society.. https://hdl.handle.net/21.15107/rcub_cer_3779
Pavlović S, Milovanović B, Paunović A. Modified eggshell catalyst for transesterification of sunflower oil: The effects of catalyst loading on FAMEs content. in Book of abstracts - Seventh Conference of the Young Chemists of Serbia. 2019;. https://hdl.handle.net/21.15107/rcub_cer_3779 .
Pavlović, Stefan, Milovanović, Biljana, Paunović, Anđela, "Modified eggshell catalyst for transesterification of sunflower oil: The effects of catalyst loading on FAMEs content" in Book of abstracts - Seventh Conference of the Young Chemists of Serbia (2019), https://hdl.handle.net/21.15107/rcub_cer_3779 .