Enhancement of biodiesel production in Chlorella vulgaris cultivation using silica nanoparticles

Jeon, Hong-Seop; Park, So Eun; Ahn, Bohye; Kim, Young-Kee

doi:10.1007/s12257-016-0657-8

Cited by 67 publications

(14 citation statements)

References 19 publications

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“…Lipids extracted from C. vulgaris were converted to FAMEs and their compositions are described in a previous study. 24 The major constituent was the long-chain saturated fatty acid of palmitic acid (C16:0), and palmitoleic acid (C16:1), linoleic acid (C18:2), oleic acid (C18:1), c-linoleic acid (18:3), and stearic acid (C18:0) were analyzed. These results are consistent with those of previous studies that reported palmitic acid as the major fatty acid in C. vulgaris biomass.…”

Section: Resultsmentioning

confidence: 99%

Effect of nanoparticle on cellular growth and lipid production in Chlorella vulgaris culture

Ahn

Park

et al. 2018

Biotechnology Progress

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Magnetic cobalt ferrite/silica nanoparticles (MSNs) and methyl functionalized MSNs (methyl-MSNs) were used to enhance lipid production in Chlorella vulgaris culture through enhancement of gas-water mass transfer and increased dissolved concentration of CO . Methyl-MSNs enhanced CO -water mass transfer rate better than MSNs, and 0.3 wt% methyl-MSNs are more effective than 0.1 wt% MSNs. In the cultivation experiment, 0.3 wt% methyl-MSNs yielded the highest dry cell weight and subsequently, the highest mass transfer rate. However, enhancement of mass transfer rate did not increase lipid content. The volumetric lipid productivity in C. vulgaris culture depends not only on intracellular lipid content but also on the cell mass concentration. Consequently, 0.1 wt% methyl-MSNs yielded the highest volumetric lipid productivity in C. vulgaris cultivation. © 2018 American Institute of Chemical Engineers Biotechnol. Prog., 34:929-933, 2018.

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Section: Resultsmentioning

confidence: 99%

Effect of nanoparticle on cellular growth and lipid production in Chlorella vulgaris culture

Ahn

Park

et al. 2018

Biotechnology Progress

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“…The iron recovery rate of Fe 3 O 4 NPs also proved that no digestion of Fe 3 O 4 NPs occurred during the culture (Table S1). In addition, Jeon et al demonstrated that the growth rate and fatty acid methyl ester (FAME) productivity of microalgae could be enhanced by improving the gas-liquid mass transfer rate through the addition of nanoparticles [11]. In the delayed biomass growth period (0-9 days) at 20 mg/L NPs, the effect of nanoparticles on biomass growth was not obvious, but after entering the logarithmic growth period (after nine days) the biomass concentration of the treated cells gradually became different to that of untreated cells and continued to increase, eventually reaching about 1.2 g/L (dry cell weight), which was about 54.8% higher than that of the control (Figure 5).…”

Section: Effects Of Low Concentration Nps On the Growth Of Chlorella Sp Uj-3mentioning

confidence: 99%

“…It was found that carbon nanotubes, nano-Fe 2 O 3 , and nano-MgO could increase the content of chlorophyll, protein, and lipid in Scenedesmus obliquus [5]. In addition, SiO 2 NPs were able to enhance the growth and lipid production of Chlorella vulgaris [11], while SiC and g-C 3 N 4 NPs improved the biomass and lipid accumulation of Scenedesmus sp. [12].…”

Section: Introductionmentioning

confidence: 99%

Development of a Strategy for Enhancing the Biomass Growth and Lipid Accumulation of Chlorella sp. UJ-3 Using Magnetic Fe3O4 Nanoparticles

et al. 2021

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In this study, magnetic Fe3O4 nanoparticles (NPs) were used as an effective enhancer to increase the biomass and total lipid production of Chlorella sp. UJ-3. It was found that the biomass of algal cells increased significantly when they were exposed to low concentrations of Fe3O4 NPs (20 mg/L), while the best total lipid content of algal cells was achieved when they were exposed to high concentrations of Fe3O4 NPs (100 mg/L). Therefore, we established a strategy to promote the growth and lipid accumulation of microalgae by initially exposing the algal cells to low concentrations of Fe3O4 NPs and then treating them with an increased concentration of Fe3O4 NPs after 12 days of culture. For this strategy, the biomass and total lipid production of algal cells increased by 50% and 108.7%, respectively, compared to the untreated control. The increase in lipid production and change in the fatty acid composition of Chlorella cells were found to help them to cope with the increased number of reactive oxygen species produced due to oxidative stress in alga cells after the addition of Fe3O4 NPs. This study provided a highly efficient way to improve the lipid production of microalgae using nanoparticles.

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“…They used Blue-Green medium (BG-11) and grew microalgae that used solely CO 2 as a carbon source; they were able to observe that the NPs increased the gas–liquid mass transfer rate in this CO 2 /medium culture system and improved both growth and lipid accumulation in the cultivated microalgae. They reported that the use of both NPs causes an increase in the volumetric mass transfer coefficient (k L a) of 31% and 145%, respectively; the results also showed that, although the addition of silicon NPs leads to an increase in cellular dry weight and in fatty acid methyl ester productivity, the highest cellular dry weight (1.49 g/L) and the highest fatty acid methyl ester productivity (610%) were obtained by the addition of 0.2 wt% SiO 2 –CH 3 NPs [146].…”

Section: Approaches To Promote Lipids Productionmentioning

confidence: 99%

Biomass and lipid induction strategies in microalgae for biofuel production and other applications

et al. 2019

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The use of fossil fuels has been strongly related to critical problems currently affecting society, such as: global warming, global greenhouse effects and pollution. These problems have affected the homeostasis of living organisms worldwide at an alarming rate. Due to this, it is imperative to look for alternatives to the use of fossil fuels and one of the relevant substitutes are biofuels. There are different types of biofuels (categories and generations) that have been previously explored, but recently, the use of microalgae has been strongly considered for the production of biofuels since they present a series of advantages over other biofuel production sources: (a) they don’t need arable land to grow and therefore do not compete with food crops (like biofuels produced from corn, sugar cane and other plants) and; (b) they exhibit rapid biomass production containing high oil contents, at least 15 to 20 times higher than land based oleaginous crops. Hence, these unicellular photosynthetic microorganisms have received great attention from researches to use them in the large-scale production of biofuels. However, one disadvantage of using microalgae is the high economic cost due to the low-yields of lipid content in the microalgae biomass. Thus, development of different methods to enhance microalgae biomass, as well as lipid content in the microalgae cells, would lead to the development of a sustainable low-cost process to produce biofuels. Within the last 10 years, many studies have reported different methods and strategies to induce lipid production to obtain higher lipid accumulation in the biomass of microalgae cells; however, there is not a comprehensive review in the literature that highlights, compares and discusses these strategies. Here, we review these strategies which include modulating light intensity in cultures, controlling and varying CO2 levels and temperature, inducing nutrient starvation in the culture, the implementation of stress by incorporating heavy metal or inducing a high salinity condition, and the use of metabolic and genetic engineering techniques coupled with nanotechnology.

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Enhancement of biodiesel production in Chlorella vulgaris cultivation using silica nanoparticles

Cited by 67 publications

References 19 publications

Effect of nanoparticle on cellular growth and lipid production in Chlorella vulgaris culture

Effect of nanoparticle on cellular growth and lipid production in Chlorella vulgaris culture

Development of a Strategy for Enhancing the Biomass Growth and Lipid Accumulation of Chlorella sp. UJ-3 Using Magnetic Fe3O4 Nanoparticles

Biomass and lipid induction strategies in microalgae for biofuel production and other applications

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