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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Comparison of several methods for effective lipid extraction from wet microalgae using green solvents

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de Jesus, Sergio S. [1] ; Ferreira, Gabriela F. [1] ; Moreira, Larissa S. [2] ; Wolf Maciel, Maria Regina [1] ; Maciel Filho, Rubens [1]
Total Authors: 5
[1] Univ Estadual Campinas, Sch Chem Engn, Lab Optimizat Design & Adv Control, PO 6066, BR-13083852 Campinas, SP - Brazil
[2] Univ Fed Rio de Janeiro, Fac Pharm, BR-21941170 Rio De Janeiro, RJ - Brazil
Total Affiliations: 2
Document type: Journal article
Source: RENEWABLE ENERGY; v. 143, p. 130-141, DEC 2019.
Web of Science Citations: 3

A comparative study of lipid extraction from microalgae was performed using the Soxhlet, Bligh and Dyer, Folch, and Hara and Radin methods, with the green solvents 2-methyltetrahydrofuran (2-MeTHF) and cyclopentyl methyl ether (CPME), which have also been used in previously published studies. Extractions were performed with the microalgae Chlorella pyrenoidosa at 65.71% moisture. The Bligh and Dyer methodology, using the solvents 2-MeTHF:isoamyl alcohol (2:1 v/v) and CPME:methanol (1:1.7 v/ v), extracted 95.73 +/- 0.52 and 89.35 +/- 7.98 mg lipids/g biomass, respectively. Regarding fatty acids yield, CPME showed higher selectivity than 2-MeTHF. A brief cost-effectiveness and energy analysis of the extraction process was performed. Based on the calculations, this study concluded that the energy required for the evaporation of the solvent and mixture of solvents after the extraction process has no significant economic impact; the largest expense is associated with solvent consumption. To extract 1 kg of fatty acids, the Hara and Radin method using hexane:isopropanol (3:2 v/v) proved to be the most costeffective. Results show that these solvents prices' are still not competitive when compared to fossil-based solvents. The price reduction of 2-MeTHE would make it more attractive than CPME, as it requires a lower amount of biomass. (C) 2019 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 15/19609-0 - Use of green solvents derived from sugarcane in the extraction of lipids and application in the production of biodiesel and synthesis of 2-methyltetrahydrofuran through bagasse
Grantee:Rubens Maciel Filho
Support Opportunities: Regular Research Grants
FAPESP's process: 10/03764-3 - Design and construction of agitated photobioreactor airlift for lipids and carbohydrates production
Grantee:Sergio Santos de Jesus
Support Opportunities: Scholarships in Brazil - Post-Doctorate