A review on microalgae biofuel and biorefinery: challenges and way forward

Kumar, Lakhan; Bharadvaja, Navneeta

doi:10.1080/15567036.2020.1836084

Cited by 22 publications

(7 citation statements)

References 150 publications

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“…However, most microalgae biorefineries are not profitable due to the untapped new value-added products from microalgal biomass [193]. Furthermore, algae biomass-based biorefineries are a relatively new technology that requires substantial financial investments in research and development (R&D) and advocates for public and private policies, largescale demonstrations, deployment strategies, and assurance of continuous and sustainable production of algae biomass [197,198]. The economic feasibility and uncertain environmental performance of an algae biorefinery are the primary constraints to its deployment.…”

Section: Algae Biomassmentioning

confidence: 99%

An Overview of Algae for Biodiesel Production Using Bibliometric Indicators

Kombe

2023

International Journal of Energy Research

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Algae are a desirable biodiesel feedstock because they take up little space, have a high algal-cell biomass per unit area, and can sustainably meet a large portion of the world’s future energy needs. Using several bibliometric indicators, this study assesses the research productivity of algae for biodiesel production. The dataset was retrieved from the Scopus database using an appropriate keyword search. The VOSviewer v1.6.18 and Biblioshiny in R -studio were then utilised for bibliometric analysis and network visualisation. The study found that, with the first article being published in 1990 and an annual scientific growth rate of 14.76%, research on algae for the generation of biodiesel is still in its early phases. Although the possibility of utilising algae to produce biodiesel was originally mentioned in 1990, it was only until 2006 that several researchers started to show an interest in the subject. 101 articles were published in 2015, which is the most ever. The most prolific countries in terms of publications, ongoing collaborations and cooperation, best publishing institutions, and prestigious journals, as well as the most productive researchers and the most highly referenced works in the field, have all been recognised and presented. Finally, a keyword co-occurrence analysis of the subject was presented and discussed to provide research insights into the field. The bibliometric indicators of the study are intended to aid researchers in finding potential research topics, high-quality scientific literature, and suitable journals for publishing research on algae for biodiesel production.

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Section: Algae Biomassmentioning

confidence: 99%

An Overview of Algae for Biodiesel Production Using Bibliometric Indicators

Kombe

2023

International Journal of Energy Research

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“…That problem is compounded by the fact that microalgal lipid profiles are sensitive to environmental factors and the age of the culture [ 87 ] and this variability imposes severe quality control issues and costs for the biodiesel producer. Moreover, despite decades of research into cultivation, processing technologies and life-cycle assessments of microalgal culture [ 88 , 89 ], including the possibilities offered by polyculture to limit population crashes, integrated biorefineries in which the microalgae are used to fix waste CO 2 , purify waste water and produce both high-value chemicals and biomass [ 90 ], the translation of laboratory findings to large-scale culture, the upfront capital expenses of suitable land and culture installations at scales that are compatible with fuel production and the operational and downstream processing costs of algal biofuels impose extremely high barriers to investment relative to 1G or 2G biomass. Addressing and overcoming these techno-economic barriers remains an area of intense research [ 91 , 92 ].…”

Section: Third Generation Microbial Oils Mycodiesels and Algal Biofuelsmentioning

confidence: 99%

Microbial pathways for advanced biofuel production

Love

2022

Biochemical Society Transactions

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Decarbonisation of the transport sector is essential to mitigate anthropogenic climate change. Microbial metabolisms are already integral to the production of renewable, sustainable fuels and, building on that foundation, are being re-engineered to generate the advanced biofuels that will maintain mobility of people and goods during the energy transition. This review surveys the range of natural and engineered microbial systems for advanced biofuels production and summarises some of the techno-economic challenges associated with their implementation at industrial scales.

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“…Due to the fast growth rate of microalgae and their richness of high-value products, large-scale microalgae cultivation is imperative at present [6]. Microalgae are widely distributed in the ocean and freshwater, while salt stress is still a threat to the large-scale production of freshwater microalgae.…”

Section: Microalgal Responses To Salt Stressmentioning

confidence: 99%

“…They can adapt to different cultivation conditions, grow rapidly and accumulate a high amount of desirable bioproducts, such as fatty acids, proteins and carotenoids. The global algae market is expected to reach 970 million U.S. dollars by the end of 2025 [6] and that of carotenoids is expected to reach 2 billion U.S. dollars by 2026, mainly including food and beverages (26.1%), pharmaceuticals (9.2%), cosmetics (6.5%) and dietary supplements (23.5%) [7]. Some species, such as Chlorella and Spirulina, have GRAS status and are well accepted as health foods [8].…”

Section: Introductionmentioning

confidence: 99%

Carotenoid Production from Microalgae: Biosynthesis, Salinity Responses and Novel Biotechnologies

et al. 2021

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Microalgae are excellent biological factories for high-value products and contain biofunctional carotenoids. Carotenoids are a group of natural pigments with high value in social production and human health. They have been widely used in food additives, pharmaceutics and cosmetics. Astaxanthin, β-carotene and lutein are currently the three carotenoids with the largest market share. Meanwhile, other less studied pigments, such as fucoxanthin and zeaxanthin, also exist in microalgae and have great biofunctional potentials. Since carotenoid accumulation is related to environments and cultivation of microalgae in seawater is a difficult biotechnological problem, the contributions of salt stress on carotenoid accumulation in microalgae need to be revealed for large-scale production. This review comprehensively summarizes the carotenoid biosynthesis and salinity responses of microalgae. Applications of salt stress to induce carotenoid accumulation, potentials of the Internet of Things in microalgae cultivation and future aspects for seawater cultivation are also discussed. As the global market share of carotenoids is still ascending, large-scale, economical and intelligent biotechnologies for carotenoid production play vital roles in the future microalgal economy.

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A review on microalgae biofuel and biorefinery: challenges and way forward

Cited by 22 publications

References 150 publications

An Overview of Algae for Biodiesel Production Using Bibliometric Indicators

An Overview of Algae for Biodiesel Production Using Bibliometric Indicators

Microbial pathways for advanced biofuel production

Carotenoid Production from Microalgae: Biosynthesis, Salinity Responses and Novel Biotechnologies

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