Evaluation on Microalgae Biomass for Bioethanol Production

Chng, Lee Muei; Lee, K T; Chan, David

doi:10.1088/1757-899x/206/1/012018

Cited by 15 publications

(8 citation statements)

References 23 publications

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“…Scenedesmus dimorphus accumulated 53.7 w/w carbohydrate contents which on hydrolysis with sulfuric acids produced 80% fermentable sugars, indicating its feasibility for bioethanol production [ 132 ]. 11.7 g/l final ethanol yield was reported from Chlorella vulgaris [ 111 ].…”

Section: Fermentation Of the Algal Sugars To Generate Bioethanolmentioning

confidence: 99%

The promising future of microalgae: current status, challenges, and optimization of a sustainable and renewable industry for biofuels, feed, and other products

2018

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Microalgae have recently attracted considerable interest worldwide, due to their extensive application potential in the renewable energy, biopharmaceutical, and nutraceutical industries. Microalgae are renewable, sustainable, and economical sources of biofuels, bioactive medicinal products, and food ingredients. Several microalgae species have been investigated for their potential as value-added products with remarkable pharmacological and biological qualities. As biofuels, they are a perfect substitute to liquid fossil fuels with respect to cost, renewability, and environmental concerns. Microalgae have a significant ability to convert atmospheric CO2 to useful products such as carbohydrates, lipids, and other bioactive metabolites. Although microalgae are feasible sources for bioenergy and biopharmaceuticals in general, some limitations and challenges remain, which must be overcome to upgrade the technology from pilot-phase to industrial level. The most challenging and crucial issues are enhancing microalgae growth rate and product synthesis, dewatering algae culture for biomass production, pretreating biomass, and optimizing the fermentation process in case of algal bioethanol production. The present review describes the advantages of microalgae for the production of biofuels and various bioactive compounds and discusses culturing parameters.

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Section: Fermentation Of the Algal Sugars To Generate Bioethanolmentioning

confidence: 99%

The promising future of microalgae: current status, challenges, and optimization of a sustainable and renewable industry for biofuels, feed, and other products

2018

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“…As shown in Figure 2(a), whether under air or 15 % CO 2 , the protein contents in PS were significantly higher than their lipid and carbohydrate contents, which agreed with recent reports, representing 32-58% of protein contents in Scenedesmus sp. [5, 23, 26, 39, 40]. However, in mutant SDEC-1M, the contents of lipid and carbohydrate were significantly higher than in PS, while the protein contents were just the opposite.…”

Section: Resultsmentioning

confidence: 95%

“…Due to their plenty compounds as lipids, carbohydrates, and protein, microalgae have enormous potential for the sustainable production of food, fuels, and other biochemicals [17]. Compounds contents and productivities are essential parameters of evaluation on applied purposes of microalgae biomass [23]. As shown in Figure 2(a), whether under air or 15 % CO 2 , the protein contents in PS were significantly higher than their lipid and carbohydrate contents, which agreed with recent reports, representing 32-58% of protein contents in Scenedesmus sp.…”

Section: Resultsmentioning

confidence: 99%

“…By comparison, it is found that the contents of lipid, carbohydrate, and protein of SDEC-1M are all moderate, representing the normal level of primary biochemical components in algae, especially Scenedesmus sp. Optimization and stress aiming at production enhancement of specific component, such as lipid [2, 22], carbohydrate [23], and protein [1, 26] were not implemented, and the cultured time is not long enough to attain the stable phase in this study. It implies that SDEC-1M has yet great potential to enhance production of lipid, carbohydrate, and protein.…”

Section: Resultsmentioning

confidence: 99%

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Characterization of a Microalgal UV Mutant for CO₂ Biofixation and Biomass Production

et al. 2018

BioMed Research International

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The mutagenesis is an emerging strategy for screening microalgal candidates for CO2 biofixation and biomass production. In this study, by 96-well microplates-UV mutagenesis, a mutant stemmed from Scenedesmus obliquus was screened and named as SDEC-1M. To characterize SDEC-1M, it was cultivated under air and high level CO2 (15% v/v), and its parental strain (PS) was considered as control. Growth characterizations showed that SDEC-1M grew best in high level CO2. It indicated that the mutant had high CO2 tolerance (HCT) and growth potential under high level CO2. Richer total carbohydrate content (37.26%) and lipid content (24.80%) demonstrated that, compared to its parental strain, SDEC-1M was apt to synthesize energy storage materials, especially under high CO2 level. Meanwhile, the highest light conversion efficiency (approximately 18 %) was also obtained. Thus, the highest overall biomass productivities were achieved in SDEC-1M under high level CO2, largely attributed to that the highest productivities of total lipid, total carbohydrate, and crude protein were also achieved in the meantime. By modified UV, therefore, mutagenized SDEC-1M was the better candidate for CO2 biofixation and biofuel production than its parental strain.

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“…A carbohydrate-rich green microalga, Scenedesmus dimorphus, was cultivated under carbon-dioxide-enriched air. In addition, the biomass was pretreated with various methods and fermentation was carried out to obtain cost-effective bioethanol [130]. Both Nannochloropsis oculata and Tetraselmis suecica were cultivated on treated municipal wastewater [131].…”

Section: Cholerlla Vulgarismentioning

confidence: 99%

Algae: The Reservoir of Bioethanol

Chandrasekhar,

Varaprasad,

Gnaneswari

et al. 2023

Fermentation

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Overuse of non-renewable fossil fuels due to the population explosion urges us to focus on renewable fuels such as bioethanol. It is a well-known fact that ethanol is useful as a blending product with common fuels such as petrol and diesel. This reduces the cost besides bringing down environmental pollution. Apart from chemical methods, bioethanol is generated from photosynthetic plants including algae, plant-based products, microbial organisms and their waste. Specifically, the production of ethanol from microalgal sources has been an attractive method in recent days. The reason behind using microalgal species is their simple structure with photosynthetic ability. In contrast, certain algal species often go disused in some regions. Hence, the production of ethanol from algal sources is one of the best waste management practices. Moreover, it is easy to improve the biomass in microalgal species by altering the physicochemical conditions such as light, pH, temperature, external supply of nutrients, vitamins, nano-sized particles, gene alterations etc., which will enhance ethanol production. In this review, the methods used for ethanol production are discussed. In addition, the factors involved in algal growth and ethanol production are emphasized. Overall, this review focuses on ethanol production from various algal species. This information will be useful for industrial-level production of ethanol and future renewable energy research.

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Evaluation on Microalgae Biomass for Bioethanol Production

Cited by 15 publications

References 23 publications

The promising future of microalgae: current status, challenges, and optimization of a sustainable and renewable industry for biofuels, feed, and other products

The promising future of microalgae: current status, challenges, and optimization of a sustainable and renewable industry for biofuels, feed, and other products

Characterization of a Microalgal UV Mutant for CO₂ Biofixation and Biomass Production

Algae: The Reservoir of Bioethanol

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Evaluation on Microalgae Biomass for Bioethanol Production

Cited by 15 publications

References 23 publications

The promising future of microalgae: current status, challenges, and optimization of a sustainable and renewable industry for biofuels, feed, and other products

The promising future of microalgae: current status, challenges, and optimization of a sustainable and renewable industry for biofuels, feed, and other products

Characterization of a Microalgal UV Mutant for CO2 Biofixation and Biomass Production

Algae: The Reservoir of Bioethanol

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Product

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Characterization of a Microalgal UV Mutant for CO₂ Biofixation and Biomass Production