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Optimisation of Tray Drier Microalgae Dewatering Techniques Using Response Surface Methodology

Author

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  • Ruth Chinyere Anyanwu

    (Institute of Engineering and Energy Technologies, School of Computing, Engineering and, Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK)

  • Cristina Rodriguez

    (Institute of Engineering and Energy Technologies, School of Computing, Engineering and, Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK)

  • Andy Durrant

    (Institute of Engineering and Energy Technologies, School of Computing, Engineering and, Physical Sciences, University of the West of Scotland, Paisley PA1 2BE, UK)

  • Abdul Ghani Olabi

    (School of Engineering and Applied Science, Aston University, Aston Triangle, Birmingham B4 7ET, UK)

Abstract

The feasibility of the application of a tray drier in dewatering microalgae was investigated. Response surface methodology (RSM) based on Central Composite Design (CCD) was used to evaluate and optimise the effect of air temperature and air velocity as independent variables on the dewatering efficiency as a response function. The significance of independent variables and their interactions was tested by means of analysis of variance (ANOVA) with a 95% confidence level. Results indicate that the air supply temperature was the main parameter affecting dewatering efficiency, while air velocity had a slight effect on the process. The optimum operating conditions to achieve maximum dewatering were determined: air velocities and temperatures ranged between 4 to 10 m/s and 40 to 56 °C respectively. An optimised dewatering efficiency of 92.83% was achieved at air an velocity of 4 m/s and air temperature of 48 °C. Energy used per 1 kg of dry algae was 0.34 kWh.

Suggested Citation

  • Ruth Chinyere Anyanwu & Cristina Rodriguez & Andy Durrant & Abdul Ghani Olabi, 2018. "Optimisation of Tray Drier Microalgae Dewatering Techniques Using Response Surface Methodology," Energies, MDPI, vol. 11(9), pages 1-10, September.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:9:p:2327-:d:167596
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    References listed on IDEAS

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    1. Tedesco, S. & Marrero Barroso, T. & Olabi, A.G., 2014. "Optimization of mechanical pre-treatment of Laminariaceae spp. biomass-derived biogas," Renewable Energy, Elsevier, vol. 62(C), pages 527-534.
    2. Chukwuma Onumaegbu & Abed Alaswad & Cristina Rodriguez & Abdul G. Olabi, 2018. "Optimization of Pre-Treatment Process Parameters to Generate Biodiesel from Microalga," Energies, MDPI, vol. 11(4), pages 1-16, March.
    3. Rawat, I. & Ranjith Kumar, R. & Mutanda, T. & Bux, F., 2013. "Biodiesel from microalgae: A critical evaluation from laboratory to large scale production," Applied Energy, Elsevier, vol. 103(C), pages 444-467.
    4. Ekpeni, Leonard E.N. & Benyounis, K.Y. & Nkem-Ekpeni, Fehintola F. & Stokes, J. & Olabi, A.G., 2015. "Underlying factors to consider in improving energy yield from biomass source through yeast use on high-pressure homogenizer (hph)," Energy, Elsevier, vol. 81(C), pages 74-83.
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    Cited by:

    1. Shokravi, Zahra & Shokravi, Hoofar & Atabani, A.E. & Lau, Woei Jye & Chyuan, Ong Hwai & Ismail, Ahmad Fauzi, 2022. "Impacts of the harvesting process on microalgae fatty acid profiles and lipid yields: Implications for biodiesel production," Renewable and Sustainable Energy Reviews, Elsevier, vol. 161(C).
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