Ultrasonic assisted extraction of oil from argan seeds using ionic liquids as novel co‑solvent

Adeeb Hayyan*, Khalid M. Abed, Maan Hayyan, M. Zulhaziman M. Salleh, Chen Wai-Keat, Yee-Sern Ng, Mohd Roslan Mohd Nor, Hanee F. Hizaddin, Mohd Ali Hashim, Yousef Mohamed Alanazi, Jehad Saleh, Bhaskar Sen Gupta, Sharifah Shahira Syed Putra

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In this study, the extraction of oil from argan seeds using ultrasonic assisted extraction was investigated using n-decane as the extraction solvent and ionic liquids as the novel co-solvents. The extraction process was assessed based on the mass ratio of solvent to seed and extraction time, alongside the exploration of different ionic liquids as co-solvents. The results showed that in the absence of ionic liquid, the optimum oil yield of 35.2% was achieved at mass ratio of solvent to seed of 6:1 at 60 °C and 30 min. The extraction process adhered to pseudo-second-order kinetic model, with a rate constant of 0.0127%−1 min−1. When ionic liquid 1-propyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C3mim][NTf2]) was utilized as a co-solvent alongside n-decane, the oil yield showed an improvement ranging from 0.4 to 4.0%, even when the mass of n-decane used remained similar. However, ionic liquid alone cannot serve as a substitute for n-decane as the extraction solvent. The experimental results were also compared with COSMO-RS analysis. The study demonstrates that ionic liquids can slightly enhance the oil yield by working synergistically with n-decane to improve the dissolution of lignocelluloses present on the seeds. This, in turn, facilitates better penetration of solvent into the seed matrix and enhancing the oil extraction.
Original languageEnglish
JournalBiomass Conversion and Biorefinery
Early online date27 Jun 2024
DOIs
Publication statusE-pub ahead of print - 27 Jun 2024

Keywords

  • Argan seeds
  • Co-solvent
  • Ionic liquid
  • Oil extraction

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment

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