A new approach of microalgal biomass pretreatment using deep eutectic solvents for enhanced lipid recovery for biodiesel production

Lu, Weidong; Alam, Md. Asraful; Pan, Ying; Wu, Jingcheng; Wang, Zhongming; Yuan, Zhenhong

doi:10.1016/j.biortech.2016.05.120

Cited by 125 publications

(42 citation statements)

References 34 publications

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“…Methods such as microwave [10] pretreatment have been proven to be effective, but require high-energy input. Alternative chemical and biological cell disruption [11,12] can increase the extraction efficiency of total lipids from microalgae for further conversion to biodiesel. SC-CO 2 [13] extraction was superior to other extraction techniques, but exhibited significant variations in yield with changes in operating parameters such as temperature and pressure [14].…”

Section: Introductionmentioning

confidence: 99%

Repeated Utilization of Ionic Liquid to Extract Lipid from Algal Biomass

Zhou

Wang

Alam

et al. 2019

International Journal of Polymer Science

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In this work, different kinds of ionic liquids and reaction conditions for the extraction of lipid from microalgae biomass were optimized and repeated use of ionic liquids for microalgal lipid extraction was evaluated. Morphological changes of microalgae cells were compared in terms of pre- and post-treatment to understand the mechanisms of ionic liquid treatment. Ionic liquid [BMIM][MeSO4] showed the best lipid extraction efficiency at 70°C and with reaction time of 2 hours. The ratios (ILs : methanol) of 1 : 7 and 1 : 3 were the optimum ratios to complete the extraction of the lipids from microalgae. The initial 50% volume fraction of [BMIM][MeSO4] was 16.04% of dry weight, which showed the highest five average extraction rates. The loss of ionic liquid in the reaction system and the increase in water content of ionic liquids were considered as the main reasons for the decrease in the extraction rate. It is suggested that the potential of lipid extraction in this IL-methanol co-solvent system is promising due to the high efficiency, low cost, safety, environmental protection, and other characteristics.

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Section: Introductionmentioning

confidence: 99%

Repeated Utilization of Ionic Liquid to Extract Lipid from Algal Biomass

Zhou

Wang

Alam

et al. 2019

International Journal of Polymer Science

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“…DESs are generally the molten liquids by the hydrogen bond interaction among two or three relatively cheap and safe components (Lu et al 2016;Flores-Ferrándiz and Chinchilla 2017;Zhang et al 2012). Up to now, DESs have exhibited their application potential because of the advantages of low cost, environmental friendliness, low vapor pressure, low melting point and easy degradation (Flores-Ferrándiz and Chinchilla 2017;Lobo et al 2012a, b).…”

Section: Introductionmentioning

confidence: 99%

“…Up to now, DESs have exhibited their application potential because of the advantages of low cost, environmental friendliness, low vapor pressure, low melting point and easy degradation (Flores-Ferrándiz and Chinchilla 2017;Lobo et al 2012a, b). In fact, many reports have shown that deep eutectic solvents can be employed in dissolution and separation (Lu et al 2016;Radošević et al 2016), organic synthesis (Gore et al 2011), electrochemistry (Zhang et al 2012) and catalytic reactions (Cao et al 2016;Gorke et al 2008;Harifi-Mood et al 2017;Xu et al 2015a;Yang and Duan 2016). DESs can be used as not only the co-solvent but also the main reaction medium.…”

Section: Introductionmentioning

confidence: 99%

The effect of deep eutectic solvents on the asymmetric hydrolysis of styrene oxide by mung bean epoxide hydrolases

Peng

Zhao

et al. 2018

Bioresour. Bioprocess.

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Background: Deep eutectic solvents have attracted considerable attention in numerous fields. There is little information on mung bean epoxide hydrolase-catalyzed epoxides in deep eutectic solvent-containing system. Results:Adding deep eutectic solvents with hydrogen bond donor of acids to phosphate buffer resulted in an obvious decrease in the optical purity of product; nevertheless, the relative slight change was observed by the addition of the deep eutectic solvents with hydrogen bond donor of alcohols and urea. Of the tested deep eutectic solvents, 10% additional amount of choline chloride/trithylene glycol can cause a significant improvement in the enantiopurity of product, from 83.2 ± 1.3% to 87.9 ± 0.3%. Moreover, with the increase in the addition amount of choline chloride/ triethylene glycol from 10 to 30%, the enantiomeric excess of product enhanced from 87.9 to 94%, but a decline of product yield was observed. Finally, the evaluation of enzyme stability showed that the additional amount from 10% to 30% was not beneficial to the activity recovery. Conclusion:In short, adding choline chloride/triethylene glycol contributes to the improvement in the optical purity of (R)-1-phenyl-1, 2-ethanediol in the catalysis of styrene oxide by mung bean epoxide hydrolases; meanwhile, the enzyme immobilization could be essential.

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“…Different algal pre-treatments have been reported in the literature; many of them are able to increase extraction rate and yields reducing overall costs and time if compared to extraction processes without pre-treatments. 1,10,20,21,22,23,24,25,26 Cell disruption methods are classified in: mechanical (e.g. bead milling), thermal (e.g.…”

Section: Introductionmentioning

confidence: 99%

Enhanced and Selective Lipid Extraction from the Microalga P. tricornutum by Dimethyl Carbonate and Supercritical CO₂ Using Deep Eutectic Solvents and Microwaves as Pretreatment

Tommasi

Cravotto

Galletti

et al. 2017

ACS Sustainable Chem. Eng.

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Microalgae are a promising alternative source of several bioactive compounds useful for human applications. However, lipids are traditionally extracted with toxic organic solvents (e.g. mixture of chloroform and methanol or hexane). In this work, we developed a new lipid extraction protocol to obtain a fatty acids rich extract from the diatom Phaeodactylum tricornutum. Deep Eutectic Solvents (DES) and microwaves (MW) were investigated as pre-treatments for environmentally friendly solvent extractions using dimethyl carbonate (DMC) and supercritical CO2 (scCO2). Pre-treatments with various DES formed by choline chloride (ChCl) and different hydrogen bond donors (oxalic acid, levulinic acid, urea, ethylene glycol and sorbitol) were tested in combination with DMC extraction. DES formed by ChCl and carboxylic acids gave best results, increasing both selectivity and total fatty acids (TFA) extraction yield of DMC (respectively by 16% and 80%). DES combined with MW heating followed by DMC extraction allows to reach comparable TFA yield and fatty acid profile to traditional Bligh & Dyer extraction method and much better selectivity (88% vs. 35%). This pre-treatment was also demonstrated to improve significantly extraction efficiency of scCO2, increasing by 20 times TFA yield and providing highly purified triglycerides extracts.

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A new approach of microalgal biomass pretreatment using deep eutectic solvents for enhanced lipid recovery for biodiesel production

Cited by 125 publications

References 34 publications

Repeated Utilization of Ionic Liquid to Extract Lipid from Algal Biomass

Repeated Utilization of Ionic Liquid to Extract Lipid from Algal Biomass

The effect of deep eutectic solvents on the asymmetric hydrolysis of styrene oxide by mung bean epoxide hydrolases

Enhanced and Selective Lipid Extraction from the Microalga P. tricornutum by Dimethyl Carbonate and Supercritical CO₂ Using Deep Eutectic Solvents and Microwaves as Pretreatment

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A new approach of microalgal biomass pretreatment using deep eutectic solvents for enhanced lipid recovery for biodiesel production

Cited by 125 publications

References 34 publications

Repeated Utilization of Ionic Liquid to Extract Lipid from Algal Biomass

Repeated Utilization of Ionic Liquid to Extract Lipid from Algal Biomass

The effect of deep eutectic solvents on the asymmetric hydrolysis of styrene oxide by mung bean epoxide hydrolases

Enhanced and Selective Lipid Extraction from the Microalga P. tricornutum by Dimethyl Carbonate and Supercritical CO2 Using Deep Eutectic Solvents and Microwaves as Pretreatment

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Enhanced and Selective Lipid Extraction from the Microalga P. tricornutum by Dimethyl Carbonate and Supercritical CO₂ Using Deep Eutectic Solvents and Microwaves as Pretreatment