Algal Biofuel: Emergent Applications in Next‐Generation Biofuel Technology

Makut, Bidhu Bhusan

doi:10.1002/9781119793038.ch4

Cited by 7 publications

(3 citation statements)

References 39 publications

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“…Various methods such as filtration, centrifugation, sedimentation and flocculation are currently used in the literature for microalgae harvesting based on liquid–solid separation. The suitability of any harvesting method depends on the density of microalgae biomass in suspension media 40 …”

Section: Microalgae As a Lipid Feedstock For Biodieselmentioning

confidence: 99%

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Approach to microalgal biodiesel production: Insight review on recent advancements and future outlook

Yadav

Sharma

2022

Biofuels Bioprod Bioref

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The environmental concerns about fossil energy and rising oil prices are regular global phenomena. In such an exigency where fossil fuel sources are dwindling, carbon‐neutral biodiesel derived from microalgae lipid seems to be an important renewable energy resource. In recent years, microalgae have become a lucrative feedstock for economically viability of commercial‐scale biofuel production owing to its high biomass growth and high oil yield compared with other crops. The screening and selection of promising microalgae strain should be based on their fatty acid profile and culture conditions. The laboratory to pilot scale culture of microalgae species requires systematic experimental designs to maximize microalgal growth using open or raceway ponds, closed photo bioreactors and hybrid systems. The pros and cons of each harvesting technique, including filtration, centrifugation, sedimentation and flocculation as well cell disruption by thermal, mechanical, chemical and biological techniques, are deliberated in details. Furthermore, the application of homogeneous, heterogeneous and enzyme catalysts in transesterification processes as well as purification technologies are emphasized to ensure high‐quality biodiesel production as per ASTM norms. Microalgae comprise a potential feedstock and biodiesel synthesis from them requires a series of complex up‐streaming and down‐stream processes which are inherently disadvantageous in technology transfer from laboratory to industrial scale. This review paper is mainly focused on microalgal cultivation, harvesting, oil extraction, biodiesel production and purification technologies, and each vital process is critically reviewed in each step. © 2022 Society of Chemical Industry and John Wiley & Sons, Ltd.

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Section: Microalgae As a Lipid Feedstock For Biodieselmentioning

confidence: 99%

“…The suitability of any harvesting method depends on the density of microalgae biomass in suspension media. 40…”

Section: Harvestingmentioning

confidence: 99%

Approach to microalgal biodiesel production: Insight review on recent advancements and future outlook

Yadav

Sharma

2022

Biofuels Bioprod Bioref

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“…Recent studies stated that energy production coupled with bioremediation using seaweed biomass for combined bioethanol and biogas production can render the energetic sustainability using energy and transportation. However, high production cost, low productivity, and cost-intensive downstream processing have been the major bottlenecks in developing large-scale systems [156,157]. A recent study on the economic feasibility of Sargassum sp.…”

Section: Challenges Associated With Marine Biogas Productionmentioning

confidence: 99%

Integrated Marine Biogas: A Promising Approach towards Sustainability

et al. 2022

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Fossil fuel depletion, climate change, and increased global energy demands are the driving forces to find alternative sources of energy. Marine-based biorefinery has been recently discussed as a promising route to mitigate the environmental challenges, enhance the energy recovery, and provide a potential source for value-added products. Anaerobic digestion is a promising technology that can convert the organic compounds of marine ecosystems into biogas. To date, a comprehensive review incorporating integrated biogas potential and effective approaches to enhance seaweed digestibility for biogas production from marine resources has not been reported. Thus, the present review aims to explore and comprehensively present seaweed and other marine resources for potential biogas production. The basics and challenges of biogas production from seaweed are elucidated. The impact of biochemical composition on biogas and the microbial communities involved in anaerobic digestion of seaweed are discussed. Utilization of different techniques such as pretreatment, co-digestion, and sequential extraction of seaweed biomass to enhance the biogas yield and to mitigate the effect of inhibitors are presented. Specifically, this article evaluates the co-digestion of seaweed with other biomass feedstocks or liquid biowastes. Integration of marine microalgae cultivation on anaerobic digestate for value-added compound production, biogas upgrading, and bioenergy recovery provides a promising approach towards a zero-waste marine-based system.

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