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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Biodiesel production from microalgal isolates of southern Pakistan and quantification of FAMEs by GC-MS/MS analysis
Chemistry Central Journal, Volume 6, No. 1, Article 149, Year 2012
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Description
Background: Microalgae have attracted major interest as a sustainable source for biodiesel production on commercial scale. This paper describes the screening of six microalgal species, Scenedesmus quadricauda, Scenedesmus acuminatus, Nannochloropsis sp., Anabaena sp., Chlorella sp. and Oscillatoria sp., isolated from fresh and marine water resources of southern Pakistan for biodiesel production and the GC-MS/MS analysis of their fatty acid methyl esters (FAMEs). Results: Growth rate, biomass productivity and oil content of each algal species have been investigated under autotrophic condition. Biodiesel was produced from algal oil by acid catalyzed transesterification reaction and resulting fatty acid methyl esters (FAMEs) content was analyzed by GC/MS. Fatty acid profiling of the biodiesel, obtained from various microalgal oils showed high content of C-16:0, C-18:0, cis-Δ9C-18:1, cis-Δ11C-18:1 (except Scenedesmus quadricauda) and 10-hydroxyoctadecanoic (except Scenedesmus acuminatus). Absolute amount of C-14:0, C-16:0 and C-18:0 by a validated GC-MS/MS method were found to be 1.5-1.7, 15.0-42.5 and 4.2-18.4 mg/g, respectively, in biodiesel obtained from various microalgal oils. Biodiesel was also characterized in terms of cetane number, kinematic viscosity, density and higher heating value and compared with the standard values.Conclusion: Six microalgae of local origin were screened for biodiesel production. A method for absolute quantification of three important saturated fatty acid methyl esters (C-14, C-16 and C-18) by gas chromatography-tandem mass spectrometry (GC-MS/MS), using multiple reactions monitoring (MRM) mode, was employed for the identification and quantification of biodiesels obtained from various microalgal oils. The results suggested that locally found microalgae can be sustainably harvested for the production of biodiesel. This offers the tremendous economic opportunity for an energy-deficient nation. © 2012 Musharraf et al.; licensee Chemistry Central Ltd.
Authors & Co-Authors
Musharraf, Syed Ghulam
Pakistan, Karachi
University of Karachi
Ahmed, Muhammad A.
Pakistan, Karachi
University of Karachi
Zehra, Noureen
Pakistan, Karachi
University of Karachi
Kabir, Nurul
Pakistan, Karachi
University of Karachi
Choudhary, Mohammed Iqbal
Pakistan, Karachi
University of Karachi
Saudi Arabia, Jeddah
King Abdulaziz University
Rahman, Atta Ur
Pakistan, Karachi
University of Karachi
Statistics
Citations: 68
Authors: 6
Affiliations: 2
Identifiers
Doi:
10.1186/1752-153X-6-149
e-ISSN:
1752153X
Research Areas
Environmental