Comparison of Liquid Product Characteristics of PFAD Metal Soap Decarboxylation by Batch and Continuous Process

Authors

  • Godlief F. Neonufa Department of Agriculture Product Technology Universitas Kristen Artha Wacana, Kupang 85000
  • Lidya Elizabeth
  • Endar Puspawiningtiyas Department of Chemical Engineering, Universitas Muhammadiyah Purwokerto, Jalan KH. Ahmad Dahlan, Dusun III, Kab. Banyumas, Jawa Tengah 53182
  • Meiti Pratiwi Department of Bioenergy Engineering and Chemurgy, Faculty of Industrial Technology, Institut Teknologi Bandung, Jatinangor, Sumedang 45363, Indonesia 3Department of Food Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Jatinangor, Sumedang 45363
  • Astri Nur Istyami Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Jalan Ganesa No. 10, Bandung 40132
  • Ronny Purwadi Department of Food Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Jatinangor, Sumedang 45363
  • Tatang H. Soerawidjaja Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Bandung, Jalan Ganesa No. 10, Bandung 40132

DOI:

https://doi.org/10.5614/j.eng.technol.sci.2021.53.3.11

Keywords:

batch decarboxylation, continuous decarboxylation, metal basic soap, green diesel, bio-hydrocarbon

Abstract

Well-run continuous processes will benefit the industrial world in the future. This paper investigated the effect of batch and continuous processes on metal basic soap decarboxylation in terms of the liquid product characteristics. The metal soap used in the process was made from palm fatty acid distillate (PFAD) reacted with mixed metal oxides of Zn, Mg, and Ca. While the batch decarboxylation was carried out in a batch reactor at 400 C for 5 hours, the continuous decarboxylation was conducted at 400 C with a feed flow rate of 3.75 gr/minutes. Theoretically, the yield of batch decarboxylation is 76.6 wt% while the yield of continuous decarboxylation is 73.37 wt%. The liquid product was fractionated to separate short-chain hydrocarbon of C7-C10 (gasoline fractions) from medium- to long-chain hydrocarbons, or greater than C11 (green diesel fraction). The result showed that the alkane content from the batch process was higher than from the continuous process, whereas the continuous process produced more ketone products compared to the batch process. Furthermore, the GC-FID analysis showed a similar amount of total hydrocarbon (alkane, iso-alkane, and alkene) in both the batch and the continuous process.

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Author Biography

Lidya Elizabeth

Department of Chemical Engineering, Politeknik Negeri Bandung, Jalan Gegerkalong Hilir, Ds. Ciwaruga, Kec. Parongpong, Kab. Bandung Barat 40559

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Published

2021-07-12

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