Microalgae-based biodiesel production and its challenges and future opportunities: A review

Gaurav, Kumar; Neeti, Krishna; Singh, Reena

doi:10.1016/j.grets.2023.100060

Cited by 22 publications

(6 citation statements)

References 208 publications

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“…920 because a high acid value can cause severe deterioration in the fuel supply system. 1 H NMR spectroscopy was used to characterize the safflower oil and to evaluate conversions of the babassu and safflower biodiesels (Tables 2-4). Specific signals were employed for monitoring the profile of the safflower oil, such as the methylene group of glycerol (4.1-4.3 ppm) and the protons of olefinic (5.3-5.4 ppm), bis-allylic (2.7-2.8 ppm) and allylic (2.0-2.1 ppm), which are directly related to the amount of unsaturated fatty acids, showing that this technique can be used to determine the unsaturated molecules as well as point out trends susceptible to suffer oxidation process [41].…”

Section: Discussionmentioning

confidence: 99%

“…Table 3. Calculated conversions of safflower biodiesel (SB) and its mixture with safflower oil (SO) using 1 H NMR peak areas.…”

Section: Oxidative Stability Monitoring Of the Biodiesel Samples Usin...mentioning

confidence: 99%

“…Biodiesel production is an industrial area rising due to the biofuel demand growth and the political and economic issues related to the need to decarbonize the worldwide energy matrix [1,2]. Also known as Fatty Acid Methyl Esters (FAME), it is composed mainly of alkyl esters (saturated and unsaturated) and predominantly produced through transesterification reaction [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…However, despite its accuracy and reproducibility for compound quantification and quality control [29], NMR remains underutilized in analytical investigations. In our work, 1 H NMR was employed to determine the conversion of the safflower and babassu biodiesel samples using the integrated areas of specific signals (methyl esters (-CH 3 ) and α-carbonyl methylene (-COOCH 2 -)) [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

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1H NMR and UV-Vis as Analytical Techniques to Evaluate Biodiesel Conversion and Oxidative Stability

Braga,

Damasceno,

Barros de Sousa Silva

et al. 2024

Fuels

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The present study evaluated the applicability of 1H NMR and UV-Vis spectroscopies as analytical techniques for the characterization and determination of biodiesel conversion and for monitoring the oxidative stability of biodiesel samples with antioxidants. For this study, safflower and babassu biodiesels were obtained through transesterification, and physicochemical properties confirmed the success of both reactions. A bench-top accelerated oxidation system was used as an alternative to the Rancimat® method, with samples of 6.0 g heated at 110 ± 5 °C and collected every 2 h for 12 h. The agreement for biodiesel conversions was good, with divergences between 2% and 0.4% for safflower biodiesel and 1.9% for babassu biodiesel. As for UV-Vis spectroscopy, the technique showed the same trend as the Rancimat® method, showing efficiency in evaluating the oxidative stability of safflower biodiesel and in the performance of antioxidants BHT and DMP-30. The accuracy of NMR signals integration for mixtures of safflower oil and safflower biodiesel and the use of UV-Vis spectroscopy associated with a bench-top accelerated oxidation system to investigate the performance of phenolic and amine antioxidants in safflower and babassu biodiesel were explored for the first time, showing results close to the standard methods. Therefore, 1H NMR and UV-Vis spectroscopies could be applied as alternatives to the GC and Rancimat® methods to determine conversion and monitor the oxidative stability of biodiesel rapidly and practically.

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Section: Discussionmentioning

confidence: 99%

“…Table 3. Calculated conversions of safflower biodiesel (SB) and its mixture with safflower oil (SO) using 1 H NMR peak areas.…”

Section: Oxidative Stability Monitoring Of the Biodiesel Samples Usin...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

1H NMR and UV-Vis as Analytical Techniques to Evaluate Biodiesel Conversion and Oxidative Stability

Braga,

Damasceno,

Barros de Sousa Silva

et al. 2024

Fuels

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show abstract

“…This technique strives to meet the demand of the food and feed markets efficiently. The integration of microalgae farming with the biorefinery idea offers a sustainable and economically effective approach for manufacturing crude proteins from microalgae [130,131] The varied content and structure of microalgae cell walls underscore the necessity to screen for commercial strains that can be disrupted by traditional means [133,134]. For example, T. suecica is more vulnerable to rupture than Chlorella sp.…”

Section: Protein Extraction and Utilizationmentioning

confidence: 99%

Sustainable Biotechnology Approaches Using Chlorella vulgaris's Biomass and Lipids as Biofuel Feedstock

Singh,

Jain,

Dave

et al. 2024

Preprint

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Chlorella vulgaris has considerable promise as a raw material for biofuel production since it has a high productivity per unit area, has a minimum influence on the environment, and does not significantly affect food security. Nevertheless, the low fatty content of their biomass poses a considerable economic obstacle for commercialization. Increasing the amount of biomass and lipids produced by these algae is essential for improving the economic feasibility of using them as biofuel sources. This review highlights the significance of identifying appropriate algal strains, namely those found in local environments, and utilising mutagenesis and genetic engineering techniques to create 'platform strains'. Prior endeavours have primarily concentrated on altering environmental and dietary parameters to enhance the production of biomass and lipids. Here, we review a scientific literature that examines biotechnological approaches and develops methodologies designed to increase lipid production, emphasising the importance of aligning engineering efforts with breakthroughs in DNA manipulation tools. In addition, the review research evaluates the present economic and commercial situation of algal biorefineries, including any related disadvantages. In summary, this thorough research highlights the importance of using creative methods to tackle the intricacies of lipogenesis and enhance the economic viability of producing biofuels from algae.

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Biobased Hydrogenated Lubricants

Shakya,

Prasad,

Pradhan

et al. 2024

Lubricants From Renewable Feedstocks

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Microalgae-based biodiesel production and its challenges and future opportunities: A review

Cited by 22 publications

References 208 publications

1H NMR and UV-Vis as Analytical Techniques to Evaluate Biodiesel Conversion and Oxidative Stability

1H NMR and UV-Vis as Analytical Techniques to Evaluate Biodiesel Conversion and Oxidative Stability

Sustainable Biotechnology Approaches Using Chlorella vulgaris's Biomass and Lipids as Biofuel Feedstock

Biobased Hydrogenated Lubricants

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