A review on microalgae cultivation and harvesting, and their biomass extraction processing using ionic liquids.

Jia Sen Tan, Sze Ying Lee, Kit Wayne Chew, Man Kee Lam, Jun Wei Lim, Shih-Hsin Ho, Pau Loke Show

Journal: Bioengineered 2020;11(1):116-129

PMID: 31909681

Abstract

The richness of high-value bio-compounds derived from microalgae has made microalgae a promising and sustainable source of useful product. The present work starts with a review on the usage of open pond and photobioreactor in culturing various microalgae strains, followed by an in-depth evaluation on the common harvesting techniques used to collect microalgae from culture medium. The harvesting methods discussed include filtration, centrifugation, flocculation, and flotation. Additionally, the advanced extraction technologies using ionic liquids as extractive solvents applied to extract high-value bio-compounds such as lipids, carbohydrates, proteins, and other bioactive compounds from microalgae biomass are summarized and discussed. However, more work needs to be done to fully utilize the potential of microalgae biomass for the application in large-scale production of biofuels, food additives, and nutritive supplements.

Address: Department of Biotechnology, Faculty of Applied Science, UCSI University, Kuala Lumpur, Malaysia.; Department of Chemical Engineering, Lee Kong Chian Faculty of Engineering and Science, Universiti Tunku Abdul Rahman, Sungai Long Campus, Kajang, Malaysia.; School of Mathematical Sciences, Faculty of Science and Engineering, University of Nottingham Malaysia, Selangor, Malaysia.; Chemical Engineering Department, Universiti Teknologi PETRONAS, Perak, Malaysia.; Centre for Biofuel and Biochemical Research, Institute of Self-Sustainable Building, Universiti Teknologi PETRONAS, Seri Iskandar, Malaysia.; Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Seri Iskandar, Malaysia.; State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin, China.; Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Semenyih, Malaysia.

DOI: 10.1080/21655979.2020.1711626

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MeSH Terms: Biofuels, Biomass, Culture Media, Ionic Liquids, Microalgae, Plant Extracts