The potential of using microalgae for simultaneous oil removal in wastewater and lipid production

Choong, Y.J. and Yokoyama, H. and Matsumura, Y. and Lam, M.K. and Uemura, Y. and Dasan, Y.K. and Kadir, W.N.A. and Lim, J.W. (2020) The potential of using microalgae for simultaneous oil removal in wastewater and lipid production. International Journal of Environmental Science and Technology, 17 (5). pp. 2755-2766.

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Abstract

Abstract: Microalgae have received considerable attention in recent years due to their significant potential in contaminants removal from wastewater and can be used as a sustainable feedstock for biofuel production. However, existing researches on microalgae are mainly focused on inorganic nutrients (i.e., nitrogen and phosphorus) removal, while oil as one of the major pollutant classes has been lack of study. Therefore, the present work was aimed to use microalgae to remove oil in wastewater and for simultaneous lipid production. In this study, variables such as ozone flowrate, oil concentration, amount of microalgae seeds and cultivation pH value were introduced to optimize the oil removal efficiency and lipid yield. The optimized parameters that resulted the highest oil removal percentage (41.56) were as follows: 0.4 L/min of ozone flowrate, 3 mL/L of oil concentration, 200 mL/L of microalgae seeds and cultivation pH value of 3 to 5. Under this condition, the lipid content embedded within the microalgae cells was 41.5 and mainly consisted of unsaturated fatty acids. The present results affirmed the capability of microalgae to remove oil from wastewater and could produce higher lipid yield from the metabolized oil. Graphic abstract: Figure not available: see fulltext.. © 2020, Islamic Azad University (IAU).

Item Type: Article
Impact Factor: cited By 8
Uncontrolled Keywords: Biodiesel; Lipids; Microorganisms; Nitrogen removal; Ozone; Ozone water treatment; Ozonization; pH; Unsaturated fatty acids; Wastewater treatment, Biofuel production; Inorganic nutrients; Micro-algae; Nitrogen and phosphorus; Oil concentration; Oil removal; Oil removal efficiencies; Optimized parameter, Algae, biofuel; cell; concentration (composition); cultivation; lipid; microalga; nitrogen; pollutant removal; pollutant source; wastewater
Departments / MOR / COE: Research Institutes > Institute for Contaminant Management
Depositing User: Ms Sharifah Fahimah Saiyed Yeop
Date Deposited: 29 Mar 2022 03:33
Last Modified: 29 Mar 2022 03:33
URI: http://scholars.utp.edu.my/id/eprint/32428

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