Development of effective approach for dewatering microalgae

Ruth Anyanwu, Cristina Rodriguez, Andrew Durrant, Abdul-Ghani Olabi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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Abstract

The focus of this study lies on the effect of centrifugation on algal cell structure. Centrifuge experiments were conducted on Scenedesmus quadricauda and Chlorella vulgaris at different centrifugal speeds between 1000 to 4000 rotation per minute and varying time between 5 to 30 minutes. Dewatering efficiency and microalgae cell disruption were evaluated. To assess the effect of centrifugation on microalgae cell wall, cell images before and after centrifugation were compared. Cell images were captured using microscope camera with image-focus 4 software. Experimental results indicated that centrifugation technique is an effective approach for dewatering microalgae under specific conditions 4000 rotation per minute for 10 minutes. Scenedesmus quadricauda and Chlorella vulgaris respectively showed highest biomass recovery because they respectively resulted in 82% and 91% dewatering efficiency. This study provides information on specific impact of centrifugation on Scenedesmus quadricauda and Chlorella vulgaris for the first time, therefore providing specific option for microalgae dewatering technique in the energy industry.
Original languageEnglish
Title of host publication12th Conference on Sustainable Development of Energy, Water and Environment Systems, SDEWES
PublisherUniversity of Zagreb
Number of pages9
Publication statusPublished - 4 Oct 2017

Publication series

Name
ISSN (Print)1847-7178

Keywords

  • Microalgae
  • Cultivation
  • Biomass
  • Centrifugation
  • Harvesting
  • Dewatering

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