Loading...

Green biodiesel production from various plant oils using nanobiocatalysts under different conditions

Esmaeilnejad Ahranjani, P ; Sharif University of Technology | 2020

766 Viewed
  1. Type of Document: Article
  2. DOI: 10.1007/s12155-019-10022-9
  3. Publisher: Springer , 2020
  4. Abstract:
  5. The lipase-immobilized polyethyleneimine (PEI)- and polyacrylic acid (PAA)–coated magnetic silica nanocomposite particles (L-PEI-MS and L-PAA-MS, respectively) were prepared and applied at various transesterification reaction conditions. The reactions were carried out with soybean, sunflower, canola, and palm oils along with methanol or ethanol in the solvent-free and n-hexane systems. The highest fatty acid methyl ester (FAME) and fatty acid ethyl ester (FAEE) synthesis yields were obtained from the transesterification of palm oil, i.e., almost 7.7–10.2% higher than other oils. At the constant reaction conditions, the application of ethanol leads to higher (6.0–8.7%) reaction yields in comparison with methanol. In addition, irrespective of reaction conditions, the best performance was acquired by L-PEI-MS; e.g., the FAME and FAEE synthesis yield values of 81.2% and 88.3% were obtained from transesterification of palm oil in the solvent-free systems, respectively. Addition of n-hexane improved the synthesis of FAME and FAEE yield values to 88.9% and 93.3%, respectively, using L-PEI-MS. The transesterification reactions kinetics follows the Ping-Pong Bi-Bi mechanism with alcohol inhibition effects. The high catalytic performance of L-PEI-MS might be related to its hydrophobic nature, which enhances the accessibility of oil molecules to the immobilized lipases and hampers the deactivating effect of alcohol molecules on them. © 2020, Springer Science+Business Media, LLC, part of Springer Nature
  6. Keywords:
  7. Immobilized lipase ; Plant oils ; Polymer-coated nanoparticles ; Transesterification ; Binary alloys ; Biodiesel ; Bismuth alloys ; Esters ; Ethanol ; Fatty acids ; Hexane ; Methanol ; Molecules ; Organic solvents ; Reaction kinetics ; Silica ; Soybean oil ; Sunflower oil ; Coated nanoparticles ; Fatty acid ethyl ester ; Fatty acid methyl ester ; High catalytic performance ; Immobilized lipase ; Ping-Pong Bi-Bi mechanism ; Plant oil ; Transesterification reaction ; Palm oil
  8. Source: Bioenergy Research ; Volume 13, Issue 2 , 2020 , Pages 552-562
  9. URL: https://link.springer.com/article/10.1007/s12155-019-10022-9