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Contents Vol 2 (1)

Advancement in Microalgae Biomass Harvesting by Flocculation Technologies and Lipid Extraction for Biofuel Production: Research and Patent Progress

Md Sahidur Rahman1, Mohammad Abu Islam2, Md Moniruzzaman3

+ Author Affiliations

Energy Environment & Economy 2 (1) 1-23 https://doi.org/10.25163/energy.2110136

Submitted: 09 May 2024 Revised: 10 August 2024  Published: 14 August 2024 

Abstract

Microalgae research has gained enormous research interest since last few decades because of the diverse number of worthwhile applications and is emerging as a biomass source to produce a variety of biofuels and other value-added products. However, present downstream processing techniques are not fully developed to defeat the techno-economic barriers, among which microalgae harvesting is the major bottleneck for commercialization. Flocculation is considered a superior method to harvest microalgae from growth medium because of harvesting efficiency, operational economics, and technical feasibility. Albeit pretreatment method is important to disrupt the cell wall of microalgae to enhance the lipid extraction. Therefore, this review presents the advanced progress of various flocculation-harvesting methods with special importance of innovative bio flocculation, underlying mechanism of microalgae and flocculation, their effect on lipids and FAME extraction, industrial patent progress and cell disruption methods with the influence of green chemistry solvents for sustainable biodiesel production.

Keywords: Biofuel, microalgae harvesting, flocculation, pretreatment, solvent, lipids.

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