Green Diesel Production from Oleic Acid Deoxygenation Using Subcritical Water under Hydrogen-Free Condition

Authors

  • Nitchakul Hongloi Kasetsart University
  • Paweena Prapainainar Kasetsart University
  • Tanapong Muadmai Kasetsart University
  • Jade Namboonlue Kasetsart University
  • Anusorn Seubsai Kasetsart University
  • Chaiwat Prapainainar King Mongkut’s University of Technology North Bangkok

DOI:

https://doi.org/10.4186/ej.2021.25.10.115

Keywords:

green diesel, bio-hydrogenated diesel (BHD), oleic acid, subcritical water, in-situ hydrogen, deoxygenation

Abstract

Green diesel or bio-hydrogenated diesel (BHD) is a second generation renewable liquid fuel that can be produced from several types of renewable sources such as triglyceride in vegetable oils or animal fats, free fatty acid in waste from refining palm oil industry, and their derivatives via a catalytic reaction involving hydrogenation and deoxygenation provided n-alkanes as a main product. In this work, the aim was to investigate the effect of reaction time and catalyst type on green diesel production in a batch mode without H2 feed. The green diesel was produced from oleic acid using activated carbon and commercial catalyst at reaction temperature of 250 °C and total pressure of 40 bars under DI water as a hydrogen source. The results showed that 100% oleic acid conversion was obtained by using both type of catalysts. Pentadecane was the main product with 96% percentage at 3 h reaction time for commercial catalyst and 100% percentage at 5 h reaction time for activated carbon. In addition, the products in gas phase were CO2 and CO for both types of catalyst and CH4 only appeared when commercial catalysts were used. 

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Author Biographies

Nitchakul Hongloi
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National Center of Excellence for Petroleum, Petrochemicals and Advance Material, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok, 10900 Thailand

Paweena Prapainainar
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National Center of Excellence for Petroleum, Petrochemicals and Advance Material, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok, 10900 Thailand

Research Network of NANOTEC KU on NanoCatalysts and NanoMaterials for Sustainable Energy and Environment, Bangkok, 10900 Thailand

Tanapong Muadmai
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National Center of Excellence for Petroleum, Petrochemicals and Advance Material, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok, 10900 Thailand

Jade Namboonlue
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National Center of Excellence for Petroleum, Petrochemicals and Advance Material, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok, 10900 Thailand

Anusorn Seubsai
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National Center of Excellence for Petroleum, Petrochemicals and Advance Material, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok, 10900 Thailand

Research Network of NANOTEC KU on NanoCatalysts and NanoMaterials for Sustainable Energy and Environment, Bangkok, 10900 Thailand

Chaiwat Prapainainar
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Department of Chemical Engineering, Faculty of Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok, 10800 Thailand

Research and Development Center for Chemical Unit Operation and Catalyst Design, Science and Technology Research Institute, King Mongkut’s University of Technology North Bangkok, Bangkok, 10800 Thailand

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Published In
Vol 25 No 10, Oct 31, 2021
How to Cite
[1]
N. Hongloi, P. Prapainainar, T. Muadmai, J. Namboonlue, A. Seubsai, and C. Prapainainar, “Green Diesel Production from Oleic Acid Deoxygenation Using Subcritical Water under Hydrogen-Free Condition”, Eng. J., vol. 25, no. 10, pp. 115-122, Oct. 2021.
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