Purification of Crude Glycerol from Biodiesel By-product by Adsorption using Bentonite

Erniati Anzar, M. Syahirman Yusi, Yohandri Bow

Abstract


The production of glycerol from biodiesel by-product that was obtained from waste cooking oil has low purity. This crude glycerol contains impurities such as methanol, catalyst, soap and water. Analysis result shows that crude glycerol contains 67.7% water, 16.7% ash with density 1.1217 g/mL. The impurities were able to be adsorbed using bentonite which was activated in sulphuric acids 1.5 M and characterized by SEM-EDX. The purified glycerol after being treated with bentonite at 60 C for 75 minutes was fulfilled The SNI 06-1564-1995 requirement i.e. 89.5% glycerol, 4.3% water, 3.6% ash and density 1.2212 g/mL. From the experiment can be concluded the activated bentonite showed a capacity in adsorbing and removing impurities in waste cooking oil.


Full Text:

Full PDF

References


Kovaks A. 2011. Aspect of refining biodiesel byproduct glycerin. J. of Petroleum and Coal.1. pp. 91-97.

Darnoko, D and Cheryan, M, 2000, “Kinetics of Palm Oil Transesterification in a Batch Reactor”, J. Am.Oil Chem.Soc., 77, pp. 1263-1267.

Herawan T.Wirjosentono B. dan Rahmi U.(2006). Pemurnian Residu Gliserol Pabrik Biodiesel dengan Cara Pengasaman.

Penelitian PPKS – Departemen Kimia. Medan.

Jon Van Gerpen and Gerhard Knothe. 2005. Biodiesel Production. The Biodiesel Handbook, USA

Manosak, R., Limpattayanate, S & Hunsom, M. 2010. Sequential refining of crude glycerol derived from waste used oil methyl ester plant via a combination process of chemical and adsorption, Fuel Process.Technol. 104, pp 92-99

Cao P., Dube´ M.A., dan Tremblay A.Y., (2008), “Methanol recycling in the production of biodiesel in a membrane reactor”, Fuel, 87, pp 825–833.

Dube´ M.A., Tremblay A.Y., dan Liu J., (2007), “Biodiesel Production Using a Membrane Reactor”, Bioresource Technology, 98, pp 639–647.

Dube´ M.A., Tremblay A.Y., dan Cao P., (2006), “A Novel Membrane Reactor for the Continuous Production of Biodiesel”,

Department of Chemical Engineering, University of Ottawa, Canada.

Cao P., Tremblay A.Y., dan Dube M.A., (2009), “Kinetics of Canola Oil Transesterification in a Membrane Reactor”, Ind. Eng. Chem. Res., Vol. 48, No. 5. pp 2533–2541.

Cao P., Tremblay A.Y., Dube´ M.A., and Morse K., (2007), “Effect of membrane pore size on the performance of a membrane

reactor for biodiesel production”, Ind. Eng. Chem. Res., 46, pp 52–58.

Rmachandran K, Suganya N, Gandhi NN, Renganathan S. 2013. Recent developments for biodiesel production by ultrasonic assist transesterification using different heterogenous catalyst: A review. Renew. Sustain. Energy Rev. 22: pp 410-418.

Aziz I, Las T, Shabrina A. 2014. Pemurnian crude glycerol dengan cara pengasaman dan adsorpsi menggunakan zeolit alam Lampung. Chem. Prog. 7: pp. 66-73.

Anonym. 1995. Official Methods of Analysis of The Association of Analytical Chemists. Washington D.C.

SNI 06-1564-1995. Gliserol Kasar. Jakarta: Badan Standarisasi Nasional.

Hunsom, M & Autthanit, C. 2013. Adsorptive purification of crude glycerol by sewage sludge derived activated carbon prepared by chemical activation with H3PO4, K2CrO3 and KOH. Chem. Eng.

Journal. 229, pp 334-343.

Kongjao, S., Damronglered, S. & Hunsom, M. 2010. Purification of crude glycerol derived from waste used oil methyl ester plant. Chem. Eng. Journal. 27, pp. 944-949.

The Soap and Detergent Association. 1980. Glycerin: An Overview. New York.

Ooi, T.L., Yong, K.L., Dzulkefly, K. & Yunus, W.2001. Crude glycerol recovery from glycerol residue waste from a palm kernel oil methyl ester plant. J. of Oil Palm Res.13,pp16-22




DOI: http://dx.doi.org/10.24845/ijfac.v3.i3.83

Refbacks

  • There are currently no refbacks.


 

Editorial Office:

Department of Chemistry, Faculty of Mathematics and Natural Sciences Universitas Sriwijaya
Jl. Palembang-Prabumulih Km.32 Indralaya 30662
Phone: +62-711-580269

 

Creative Commons License
IJFAC by Department of Chemistry Sriwijaya University is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License