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Microalgal cell disruption for biofuel development

Author

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  • Halim, Ronald
  • Harun, Razif
  • Danquah, Michael K.
  • Webley, Paul A.

Abstract

The production of alternative fuels from microalgae involves lengthy processing steps. Cell disruption is an integral part of the downstream pool of unit operations as it facilitates the release of intracellular products essential for biofuel production. This study investigated the use of high-pressure homogenization, ultrasonication, bead beating, and sulfuric acid treatment as laboratory-scale disruption methods for microalgal cells. The performance of each cell disruption method was evaluated in terms of two key indicators: reduction in the intact cell count and reduction in the average colony diameter. The microalgal strain, Chlorococcum sp., was used throughout the study. The most effective disruption was obtained using high-pressure homogenization (average disruption=73.8% of initial intact cells) followed by sulfuric acid treatment (average disruption=33.2% of initial intact cells) and bead beating (average disruption=17.5% of initial intact cells). Even though ultrasonication failed to disrupt the microalgal cells under the investigated conditions (average disruption=4.5% of initial intact cells), it still managed to disintegrate cellular colonies.

Suggested Citation

  • Halim, Ronald & Harun, Razif & Danquah, Michael K. & Webley, Paul A., 2012. "Microalgal cell disruption for biofuel development," Applied Energy, Elsevier, vol. 91(1), pages 116-121.
    • Handle: RePEc:eee:appene:v:91:y:2012:i:1:p:116-121
    DOI: 10.1016/j.apenergy.2011.08.048
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    References listed on IDEAS

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    1. Rawat, I. & Ranjith Kumar, R. & Mutanda, T. & Bux, F., 2011. "Dual role of microalgae: Phycoremediation of domestic wastewater and biomass production for sustainable biofuels production," Applied Energy, Elsevier, vol. 88(10), pages 3411-3424.
    2. Amaro, Helena M. & Guedes, A. Catarina & Malcata, F. Xavier, 2011. "Advances and perspectives in using microalgae to produce biodiesel," Applied Energy, Elsevier, vol. 88(10), pages 3402-3410.
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