A review on prospective production of biofuel from microalgae

Ganesan, Ramya; Manigandan, S.; Samuel, Melvin S.; Shanmuganathan, Rajasree; Brindhadevi, Kathirvel; Lan, Nguyễn Thúy; Duc, Pham Anh; Pugazhendhi, Arivalagan

doi:10.1016/j.btre.2020.e00509

Cited by 178 publications

(53 citation statements)

References 116 publications

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“…The first generation of biofuels comes from terrestrial crops (e.g., maize, sugarcane, sugar beet and rapeseed) which has many drawbacks/limitations causing destruction of forests and the abundant usage of water. The second generation is from forest residues, lignocellulosic agriculture and from non-food crop feedstocks which disadvantage is the land use [ 184 , 185 ]. Biofuels are the renewable energy sources produced from algal biomass which is the third generation of biofuels and is a promising alternative method to the previous methods.…”

Section: Microalgae In Biofuels and Energymentioning

confidence: 99%

Isolation of Industrial Important Bioactive Compounds from Microalgae

et al. 2021

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Microalgae are known as a rich source of bioactive compounds which exhibit different biological activities. Increased demand for sustainable biomass for production of important bioactive components with various potential especially therapeutic applications has resulted in noticeable interest in algae. Utilisation of microalgae in multiple scopes has been growing in various industries ranging from harnessing renewable energy to exploitation of high-value products. The focuses of this review are on production and the use of value-added components obtained from microalgae with current and potential application in the pharmaceutical, nutraceutical, cosmeceutical, energy and agri-food industries, as well as for bioremediation. Moreover, this work discusses the advantage, potential new beneficial strains, applications, limitations, research gaps and future prospect of microalgae in industry.

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Section: Microalgae In Biofuels and Energymentioning

confidence: 99%

Isolation of Industrial Important Bioactive Compounds from Microalgae

et al. 2021

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“…At present, biofuels from microalgae are considered to form part of the solution to replacing fossil fuels and reducing the effects of climate change [1][2][3][4]. Biofuels from microalgae can be retrieved in the form of biogas, biodiesel, bioethanol, biobutanol, biomethanol, biohydrogen and others [5][6][7][8]. Biodiesel and bioethanol are two of the most promising liquid biofuels derived from microalgae at present [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Producing Energy-Rich Microalgae Biomass for Liquid Biofuels: Influence of Strain Selection and Culture Conditions

et al. 2021

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Energy-storage metabolites such as neutral lipids and carbohydrates are valuable compounds for liquid biofuel production. The aim of this work is to elucidate the main biological responses of two algae species known for their effective energy-rich compound accumulation in nitrogen limitation and day–night cycles: Nannochloropsis gaditana, a seawater species, and Parachlorella kessleri, a freshwater species. Lipid and carbohydrate production are investigated, as well as cell resistance to mechanical disruption for energy-rich compound release. Nitrogen-depleted N. gaditana showed only a low consumption of energy-storage molecules with a non-significant preference for neutral lipids (TAG) and carbohydrates in day–night cycles. However, it did accumulate significantly fewer carbohydrates than P. kessleri. Following this, the highest levels of productivity for N. gaditana in chemostat cultures at four levels of nitrogen limitation were found to be 3.4 and 2.2 ×10−3 kg/m2·d for carbohydrates and TAG, respectively, at 56%NO3 limitation. The cell disruption rate of N. gaditana decreased along with nitrogen limitation, from 75% (at 200%NO3) to 17% (at 13%NO3). In the context of potentially recoverable energy for biofuels, P. kessleri showed good potential for biodiesel and high potential for bioethanol; by contrast, N. gaditana was found to be more efficient for biodiesel production only.

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“…Nowadays, microalgae are clearly one of the most promising sources for new-generation biofuels, whereas anaerobic digestion to produce methane is a feasible way to gain bioenergy from microalgae biomass [31]. The methane yield from anaerobic digestion of algae ranging from 140 to 360 mL/g volatile solids (VS) fed the digester, which is comparable to the yield obtained with sewage sludge digestion of 190-430 mL/g VS [32].…”

Section: Introductionmentioning

confidence: 99%

Effects of Ultrasonic and Microwave Pretreatment on Lipid Extraction of Microalgae and Methane Production from the Residual Extracted Biomass

et al. 2020

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The extraction of lipids from microalgae cells of Botryococcus braunii and Chlorella vulgaris after ultrasonic and microwave pretreatment was evaluated. Cell disruption increased the lipid extraction efficiency, and microwave pretreatment was more effective compared with ultrasonic pretreatment. The maximum lipid yield from B. braunii was 56.42% using microwave radiation and 39.61% for ultrasonication, while from C. vulgaris, it was respectively 41.31% and 35.28%. The fatty acid composition in the lipid extracts was also analyzed. The methane yield from the residual extracted biomass pretreated by microwaves ranged from 148 to 185 NmL CH4/g VS for C. vulgaris and from 128 to 142 NmL CH4/g VS for B. braunii. In the case of ultrasonic pretreatment, the methane production was between 168 and 208 NmL CH4/g VS for C. vulgaris, while for B. braunii ranging from 150 to 174 NmL CH4/g VS. Anaerobic digestion showed that lipid-extracted biomass presented lower methane yield than non-lipid-extracted feedstock, and higher amount of lipid obtained in the extraction contributed less methane production. Anyway, anaerobic digestion of the residual extracted biomass can be a suitable method to increase economic viability of energy recovery from microalgae.

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A review on prospective production of biofuel from microalgae

Abstract: Graphical abstract

Cited by 178 publications

References 116 publications

Isolation of Industrial Important Bioactive Compounds from Microalgae

Isolation of Industrial Important Bioactive Compounds from Microalgae

Producing Energy-Rich Microalgae Biomass for Liquid Biofuels: Influence of Strain Selection and Culture Conditions

Effects of Ultrasonic and Microwave Pretreatment on Lipid Extraction of Microalgae and Methane Production from the Residual Extracted Biomass

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