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Modern developmental aspects in the field of economical harvesting and biodiesel production from microalgae biomass

journal contribution
posted on 2022-06-27, 00:22 authored by Gul Muhammad, Md Asraful Alam, M Mofijur, Md Jahirul IslamMd Jahirul Islam, Yongkun Lv, Wenlong Xiong, Hwai C Ong, Jingliang Xu
Microalgae have been widely explored because of the diverse number of their worthwhile applications and potential as a source biomass for the production of biofuels and value-added materials. However, downstream techniques have yet to be fully developed to overcome techno-economic barriers. Flocculation is a superior method for harvesting microalgae from growth medium because of its harvesting efficiency, economic feasibility. Various kind of bio-flocculation harvesting methods are consider as attractive low cost and environmentally friendly options and able to harvest >90% biomass. Lipid recovery from microalgal cells is a major barrier for the biofuel industry because of process complexity and algae cell structure. Thus, the pretreatment method is necessary to disrupt the cell walls of microalgae and enhance lipid extraction. Many techniques, including dry methods of extraction, are already being implemented but found out that they are not efficient and cost-effective. Various new wet harvesting strategies have been claimed to extract major lipids in cost-efficient (30% less than conventional) way as wet technologies can eliminate the cost of cell drying and associated instruments. It is necessary to develop new methods which are energy and cost-effective, and environmentally friendlier for the commercialization of biofuels. Therefore, this review presents the advances in the progress of various flocculation harvesting methods with special emphasis on innovative bio-flocculation, the underlying mechanism of microalgae and flocculation. In this study also summarize the recent progress on microalgal oil extraction processes, and comparison was made between the processes in terms of sustainability, technology readiness, and applications in larger scales.

History

Volume

135

Start Page

1

End Page

18

Number of Pages

19

eISSN

1879-0690

ISSN

1364-0321

Publisher

Elsevier

Language

en

Peer Reviewed

  • Yes

Open Access

  • No

Acceptance Date

2020-08-04

External Author Affiliations

Prince Mohammad Bin Fahad University, Saudi Arabia; Zhengzhou University, China; University of Technology Sydney

Era Eligible

  • Yes

Journal

Renewable and Sustainable Energy Reviews

Article Number

110209

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