Biodiesel production from waste cooking oil using a new heterogeneous catalyst SrO doped CaO nanoparticles


  • Apisit Prokaewa Department of Chemistry, Faculty of Science and technology, Thammasat University, Khlong Luang, Pathum Thani 12120, Thailand
  • Siwaporn Meejoo Smith Department of Chemistry, Faculty of Science and technology, Mahidol University, Phuttamonthon, Nakorn Pathom 73170, Thailand
  • Apanee Luengnaruemitchai The Petroleum and Petrochemical College, Chulalongkorn University, Pathumwan, Bangkok 10330, Thailand
  • Mathi Kandiah School of Science, BMS, 591, Galle Road, Colombo 06, Sri Lanka
  • Supakorn boonyuen Department of Chemistry, Faculty of Science and technology, Thammasat University, Khlong Luang, Pathum Thani 12120, Thailand



Waste palm oil, Calcium oxide catalyst, Strontium modified catalyst, Transesterication


Biodiesel production from waste palm cooking oil (WPCO) was studied. Calcium oxide with a strontium ion additive (Sr-CaO) was employed as a catalyst in transesterification reaction of used palm oil with methanol. The Sr-CaO was synthesized by co-precipitation method between SrCl2 and Ca(NO3)2, then calcined at 900°C for 5 h. The catalyst was characterized by using thermo-gravimetric analysis (TGA), X-ray diffraction (XRD), Scanning electron microscope (SEM), and Fourier transform infrared spectrometer (FT-IR). The morphology and elements content of Sr and Ca in the catalyst were confirmed by SEM-EDX. The approximate catalyst diameter is 12.6±5.9 µm. The highest conversion was 99.33% (the reaction time 3 h, 5%w/w catalyst, methanol to oil molar ratio 9:1 and reaction temperature 80°C). The catalyst can be used up to the sixth cycles with a good yield. The synthesized biodiesel meet the requirement of standard biodiesel (EN 14103 and ASTM D445). These findings suggest that calcium oxide with a strontium ion additive (Sr-CaO) is an effective renewable biodiesel catalyst.


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A. K. Sarma, J. K. Sarmah, L. Barbora, P. Kalita, S. Chatterjee, and P. Mahanta, “Recent inventions in biodiesel production and processing: a review,” Recent Patents Engineering, vol. 2, pp. 47-58, 2008.

N. Viriya-empikul, P. Krasae, B. Puttasawat, B. Yoosuk, and N. Chollacoop, “Waste shells of mollusk and egg as biodiesel production catalysts,” Bioresource Technology, vol. 101, pp. 3765-3767, 2010.

S. K. Karmee, and A. Chadha, “Preparation of biodiesel from crude oil of Pongamia pinnata,” Bioresource Technology. vol. 96, pp. 1425-1429, 2005.

C. O. Pereira, M. F. Portilho, C. A. Henriques, and F. M. Z. Zotin, “SnSO4 as Catalyst for simultaneous transesterification and esterification of acid soybean oil,” Journal of the Brazilian Chemistry Society, vol. 25, pp. 2409-2416, 2014.

M. L. Grandos, M. D. Z. Poves, D. M. Alonso, R. Mariscal, F. C. Galisteo, R. Moreno-Tost, J. Santamaria, and J. L. G. Fierro, “Biodiesel from sunflower oil by using activated calcium oxide,” Applied Catalyst B: Environment, vol. 73, pp. 317-326, 2007.

I. M. Atadashi, M. K. Arour, A. R. Abdul Aziz, and N. M. N. Sulaiman, “The effects of catalysts in biodiesel production: A review,” Journal of Industrial Engineering and Chemistry. vol. 19, pp. 14-26, 2013.

Z. Helwani, M. R. Othman, N. Aziz, W. J. N. Fernando, and J. Kim, “Technologies for production of biodiesel focusing on green catalytic techniques: a review,” Fuel Processing Technology, vol. 90, pp. 1502-1514, 2009.

P. Boey, G. P. Maniam, S. A. Hamid, and D. M. H. Ali, “Utilization of waste cockle shell (Anadara granosa) in biodiesel production from palm olein: Optimization using response surface methodology,” Fuel, vol. 90, pp. 2353-2358, 2011.

P. L. Boey, G. P. Maniam, and S. A. Hamid, “Biodiesel production via transesterification of palm olein using waste mud crab (Scylla serrata) shell as a heterogeneous catalyst,” Bioresource Technology, vol. 100, pp. 6362-6368, 2009.

J. Boro, A. J. Thaku, and D. Deka, “Solid oxide derived from waste shells Turbonilla stratula as a renewable catalyst for biodiesel production,” Fuel Processing Technology, vol. 92, pp. 2061-2067, 2011.

L. C. Meher, D. V. Sager, and S. N. Naik, “Technical aspects of biodiesel production by transesterification – a review,” Renewable Sustainable Energy Review, vol. 10, pp. 248-268, 2006.

Y. C. Sharma, B. Singh, and J. Korstad, “Latest developments on application of heterogeneous basic catalysts for an efficient and ecofriendly synthesis of biodiesel: A review,” Fuel, vol. 90, pp. 1309-1324, 2011.

A. S. Ramadhas, S. Jayaraj, and C. Muraleedharan, “Biodiesel production from high FFA rubber seed oil,” Fuel, vol. 84, pp. 335-340, 2005.

H. Li, S. Niu, C. Lu, and J. Li, “Calcium oxide functionalized with strontium as heterogeneous transesterification catalyst for biodiesel production,” Fuel, vol. 176, pp. 63-71, 2016.

S. H. Teo, U. Rashid, and Y. H. Taufiq-Yap, “Biodiesel production from crude Jatropha curcas oil using calcium based mixed oxide catalysts,” Fuel, vol. 136, pp. 244–-52, 2014.

K. Faungnawakij, B. Yoosuk, S. Namuangruk, P. Krasae, N. Viriya-empikul, and B. Puttasawat, “Sr–Mg mixed oxides as biodiesel production catalysts,” ChemCatChem, vol. 4, pp. 209-216, 2012.

C. L. Chen, C. C. Huang, D. T. Tran, and J. S. Chang, “Biodiesel synthesis via heterogeneous catalysis using modified strontium oxides as the catalysts,” Bioresource Technology, vol. 113, pp. 8-13, 2012.

W. N. N. Wan Omar, and N. A. S. Amin, “Biodiesel production from waste cooking oil over alkaline modified zirconia catalyst,” Fuel Processing Technology, vol. 92, pp. 2397-2405, 2011.

X. Liu, H. He, Y. Wang, and S. Zhu, “Transesterification of soybean oil to biodiesel using SrO as a solid base,” Catalysis Communications, vol. 8, pp. 1107-1111, 2007.

E. Viola, A. Blasi, V. Valerio, I. Guidi, F. Zimbardi, G. Braccio, and G. Giordano, “Biodiesel from fried vegetable oils via transesterification by heterogeneous catalysis,” Catalysis Today, vol. 179, pp. 185-190, 2012.

L. Chang, L. Pengmei, Y. Zhenhong, Y. Fang, and L. Wen, “The nanometer magnetic solid base catalyst for production of biodiesel,” Renewable Energy, vol. 35, pp. 1531-1536, 2010.

Y. Taufiq-Yap, H. Lee, M. Hussein, and R. Yunus, “Calcium-based mixed oxide catalysts for methanolysis of Jatropha curcas oil to biodiesel,” Biomass and Bioenergy, vol. 35, pp. 827-834, 2011.

S. Yan, H. Lu, and B. Liang, “Supported CaO catalysts used in the transesterification of rapeseed oil for the purpose of biodiesel production,” Energy & Fuels, vol. 22, pp. 646–651, 2008.

D. Kumar, and A. Ali, “Nanocrystalline lithium ion impregnated calcium oxide as heterogeneous catalyst for transesterification of high moisture containing cotton seed oil,” Energy Fuel, vol. 24, pp. 2091-2097, 2010.

U. Zahoor, A. B. Mohamad, and M. Zakaria, “Characterization of waste palm cooking oil for biodiesel production,” International Journal of Chemical Engineering and Applications, vol. 5, pp. 134-137, 2014.

H. Li, S. Niu, L. Chunmei, and J. Li, “Calcium oxide functionalized with strontium as heterogeneous transesterification catalyst for biodiesel production,” Fuel, vol. 176, pp. 6371, 2016.

Z. Kesic, I. Lukic, D. Brkic, J. Rogan, M. Zdujic, H. Liu, and D. Skala, “Mechanochemical preparation and characterization of CaO•ZnO used as catalyst for biodiesel synthesis,” Applied Catalysis A: General, vol. 427-428, pp. 58-65, 2012.

S. Boonyuen, S. M. Smith, M. Malaithong, A. Prokaew, B. Cherdhirunkorn, and A. Luengnaruemitchai “Biodiesel production by a renewable catalyst from calcined Turbo jourdani (Gastropoda: Turbinidae) shells,” Journal of Cleaner Production, vol. 177, pp. 925-929, 2018.

G-R. Miguel, H. Juan, B. Leticia, N-M. Joaquín, and R-G. E. Mario “Characterization of calcium carbonate, calcium oxide, and calcium hydroxide as starting point to the improvement of lime for their use in construction,” Journal of Materials in Civil Engineering, vol. 21, pp. 694-698, 2009.

G. C. Francisco, and J. B. Martinez., “Combustion synthesis process for the rapid preparation of high-purity SrO powders,” Materials Science-Poland, vol. 32, pp. 682-687, 2014.

W. Roschat, M. Kacha, B. Yoosuk, T. Sudyodsuk, and V. Promark, “Biodiesel production based on heterogeneous process catalyzed by solid waste coral fragment,” Fuel, vol. 98, pp. 194-202, 2012.

J. Boro, L. J. Konwar, A. J. Thakur, and D. Deka, “Ba doped CaO derived from waste shells of T. striatula (TS-CaO) as heterogeneous catalyst for biodiesel production,” Fuel, vol. 129, pp. 182-187, 2014.

R. M. Mohamed, G. A. Kadry, H. A. Abdel-Samad, and M. E. Awad, “High operative heterogeneous catalyst in biodiesel production from waste cooking oil,” Egyptian Journal of Petroleum. vol. 29, pp. 59-65, 2020.




How to Cite

A. . Prokaewa, S. . Meejoo Smith, A. . Luengnaruemitchai, M. . Kandiah, and S. boonyuen, “Biodiesel production from waste cooking oil using a new heterogeneous catalyst SrO doped CaO nanoparticles”, J Met Mater Miner, vol. 32, no. 1, pp. 79–85, Mar. 2022.



Original Research Articles