Valorization of aflatoxin contaminated peanut into biodiesel through non-catalytic transesterification

Sungyup JUNG, Minyoung KIM, Young Jae JEON, Yiu Fai TSANG, Amit BHATNAGAR, Eilhann E. KWON

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4 Citations (Scopus)

Abstract

Aflatoxins (AFs) are the extremely hazardous metabolites (carcinogens) that are sporadically observed in crops, and these toxic chemicals are indeed lethal to the health of living organisms including human beings. Thus, AF contaminated food waste needs to be disposed as an environmentally benign way, not releasing it into the environment. This study offered a sustainable disposal and valorization platform for AF contaminated food. Peanut was used as a model food waste, because AF is readily appeared in the peanut during its harvesting, cultivation, storage, transportation process. As the valorization platform, non-catalytic transesterification of AF contaminated peanut was employed to convert it to biodiesel (BD). From the process, lipid in AF contaminated peanut is converted into BD (95.2 wt.% yield) at 365 ˚C for 1 min. Since the boiling points of BD and AF are significantly different, this process could also resolve the separation problem of AF (180 ˚C) from BD (≥ 330 ˚C) during the transesterification reaction. As a comparison study, alkali-catalyzed reaction was done. The alkali-catalyzed one required a pretreatment process to extract peanut oil for transesterification. The highest yield was 67.8 wt.% yield after 6 h of reaction at 65 ˚C. Copyright © 2021 Elsevier B.V. All rights reserved.
Original languageEnglish
Article number125845
JournalJournal of Hazardous Materials
Volume416
Early online date13 Apr 2021
DOIs
Publication statusPublished - 15 Aug 2021

Citation

Jung, S., Kim, M., Jeon, Y. J., Tsang, Y. F., Bhatnagar, A., & Kwon, E. E. (2021). Valorization of aflatoxin contaminated peanut into biodiesel through non-catalytic transesterification. Journal of Hazardous Materials, 416. Retrieved from https://doi.org/10.1016/j.jhazmat.2021.125845

Keywords

  • Aflatoxins
  • Toxic biomass
  • Waste valorization
  • Waste-to-energy
  • Biodiesel
  • Non-catalytic transesterification

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