WEB-REPORT
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Group 1-43
Project Title Optimising the efficiency and reusability of ionic liquids in the extraction of lipids from
microalgae
Synopsis

Microalgae-derived biodiesel has shown great potential as a renewable
source of energy and can serve to reduce the reliance on fossil fuels.
The goal of this study is to optimise the extraction of lipids from
microalgae using ionic liquids (ILs) to be used for the commercial
production of biodiesel. Lipids from algal biomass were extracted using
mixtures of ionic liquids (ILs) and methanol, and the extraction process
was optimised by changing the alkyl side chain length of the IL used,
followed by varying duration of extraction, volume ratio of co-solvents
used and temperature. The optimal method was determined to be 4 h of
lipid extraction with IL:methanol (3:7 v/v) at 45 degree celsius using
1-hexyl-3-methylimidazolium hexafluorophosphate. The total
lipid content extracted using the control procedure and the optimised
procedure were 72.5% and 82.3% of the lipids respectively. In this study,
the recyclability of the best-performing ionic liquid was also
investigated using the Rotovap method, and it was found that the yield
of extracted lipids did not decrease significantly after multiple cycles
of lipids extraction. These results suggest that an optimal method was
developed for efficient lipid extraction from microalgae to be used for
producing biodiesel, and that the IL can be reused multiple times to
lower production costs.

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Team Members
(Names & Classes)
Group Leader:
VONG TIN WAI KEITH 4S3
 
Group Member/s:
TAN KAI XUAN 4S3
MATTHEW ARMSTRONG AOS
RISHIKA RANDEV AOS