Screening of native hyper-lipid producing microalgae strains for biomass and lipid production

Kabir, Faryal; Gülfraz, Muhammad; Raja, Ghazala Kaukab; Inam–ul-Haq, Muhammad; Awais, Muhammad; Mustafa, Mumtaz Begum; Khan, Sami Ullah; Tlili, Iskander; Shadloo, Mostafa Safdari

doi:10.1016/j.renene.2020.07.004

Cited by 31 publications

(13 citation statements)

References 92 publications

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“…Most microalgal strains are rich in lipids, which account for 20% to 30% of the dry biomass weight [ 146 ]. Kabir et al [ 147 ] screened 41 microalgae strains from freshwater and wastewater. Chlorella vulgaris and Scenedesmus obliquus have produced the highest lipid as 30.4 ± 0.3% and 27.9 ± 0.4%, respectively.…”

Section: Enzyme Catalystmentioning

confidence: 99%

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

2021

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The excessive utilization of petroleum resources leads to global warming, crude oil price fluctuations, and the fast depletion of petroleum reserves. Biodiesel has gained importance over the last few years as a clean, sustainable, and renewable energy source. This review provides knowledge of biodiesel production via transesterification/esterification using different catalysts, their prospects, and their challenges. The intensive research on homogeneous chemical catalysts points to the challenges in using high free fatty acids containing oils, such as waste cooking oils and animal fats. The problems faced are soap formation and the difficulty in product separation. On the other hand, heterogeneous catalysts are more preferable in biodiesel synthesis due to their ease of separation and reusability. However, in-depth studies show the limited activity and selectivity issues. Using biomass waste-based catalysts can reduce the biodiesel production cost as the materials are readily available and cheap. The use of an enzymatic approach has gained precedence in recent times. Additionally, immobilization of these enzymes has also improved the statistics because of their excellent functional properties like easy separation and reusability. However, free/liquid lipases are also growing faster due to better mass transfer with reactants. Biocatalysts are exceptional in good selectivity and mild operational conditions, but attractive features are veiled with the operational costs. Nanocatalysts play a vital role in heterogeneous catalysis and lipase immobilization due to their excellent selectivity, reactivity, faster reaction rates owing to their higher surface area, and easy recovery from the products and reuse for several cycles.

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Section: Enzyme Catalystmentioning

confidence: 99%

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

2021

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“…According to the weight and the risk influence score value of each index, the oil spill risk influence index (OSRI, which represents the influence degree of oil spill accidents at the wharf group on the water source) of the wharf group is determined by weighted sum, and the supervision level of the wharf group is further determined. As for the grade classification, some scholars determined the classification standard according to the results, such as the classification of energy systems by Zhu et al [30], and Kabir et al [31]. Considering that OSRI ∈ [1,4], which is the same as the wharf risk index, the classification standard of risk supervision level is determined by referring to the classification standard of the wharf risk level, as shown in Table 4.…”

Section: Supervision Level Determination Of Wharf Groupsmentioning

confidence: 99%

Environmental Risk Assessment of the Zhengrunzhou Water Source under the Influence of Oil Spill Accidents at the Wharf Group

Zhou

2022

Sustainability

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To compensate for the research defects of strong subjectivity in determining oil spill amount, insufficient consideration of wharf distribution, and incomplete indexes for reflecting the influence degree of oil spill accidents on water sources, and to enhance the supervision efficiency of the supervision department, this paper constructs a risk assessment system of water sources under the influence of the wharf group. The system includes a wharf group division method considering the wharf distribution situation; the calculation method of oil spill amount at wharves considering the oil tank capacity of main ship types and the production supervision risk at the wharves; the calculation method of the oil spill amount at the wharf group considering the wharf number, distribution density, production supervision risk and wharf oil spillage; the determination method for the influence degree of oil spill at the wharf group on the water sources and judgment method of supervision level at the wharf group, which takes the arrival time of oil slicks, the duration of over-standard petroleum concentration and the maximum over-standard multiple of petroleum concentration at the water intake as indexes; the method of determining the risk of oil spill accidents at the water source considering the cumulative effect of oil spill at the wharf group on the risk of the water sources; and the environmental risk assessment method of water sources considering oil spill accident risk and the anti-risk ability. Applying this system to the environmental risk assessment of the Zhengrunzhou water source in Zhenjiang City, we discovered that the flow field, wind field, oil spill location and oil spill amount were correlated with the influence degree of oil spill accidents on water sources, for which the flow field demonstrated the strongest correlation, while the wind field presented the weakest. The supervision level of the wharf group is mainly sub-key or non-key levels, but the level of the wharf group SD07 is approximate to the key supervision level during rising tide. Due to the strong anti-risk ability of the Zhengrunzhou water source, the environmental risks of the Zhengrunzhou water source under different working conditions are scarcely different and belong to the medium-risk level.

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“…The mass fraction of fatty acids in several microalgae strains is shown for reference in Table 2. [22][23][24][25][26][27][28][29][30][31][32][33][34][35][36][37][38] Eicosapentaenoic acid is generally found at higher levels in Phaeodactylum tricornutum and Pavlova lutheri. Docosahexaenoic acid is predominant in the Schizochytriu and Thraustochytrium lines.…”

Section: Microalgal Strains and Unsaturation Of Fatty Acidmentioning

confidence: 99%

Research advancement and commercialization of microalgae edible oil: a review

Xue

et al. 2021

J Sci Food Agric

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The global food crisis has led to a great deal of attention being given to microalgal oil as a sustainable natural food source. This article provides an overview of the progress and future directions in promoting the commercialization of microalgal edible oils, including microalgal triglyceride accumulation, suitable edible oil culture strategies for high nutritional value, metabolic engineering, production, and downstream technologies. The integration of the production process, biosafety, and the economic sustainability of microalgal oil production are analyzed for their critical roles in the commercialization of microalgal edible oil to provide a theoretical and scientific basis for the comprehensive development and utilization of microalgal edible oil.

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Screening of native hyper-lipid producing microalgae strains for biomass and lipid production

Cited by 31 publications

References 92 publications

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

Biodiesel Production Using Homogeneous, Heterogeneous, and Enzyme Catalysts via Transesterification and Esterification Reactions: a Critical Review

Environmental Risk Assessment of the Zhengrunzhou Water Source under the Influence of Oil Spill Accidents at the Wharf Group

Research advancement and commercialization of microalgae edible oil: a review

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