Bio-fixation of flue gas from thermal power plants with algal biomass: Overview and research perspectives

Singh, Har Mohan; Kothari, Richa; Gupta, Rakesh Kumar; Tyagi, V.V.

doi:10.1016/j.jenvman.2019.01.043

Cited by 77 publications

(19 citation statements)

References 113 publications

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“…Anthropogenic activities, including the burning of fossil fuels, have greatly contributed to global warming and climate change due to the resulting CO2 emissions [1]. It is estimated that approximately 33.4 Gt of CO2 are emitted by fossil fuel power plants each year, accounting for nearly 40% of the total CO2 emitted into the Earth's atmosphere [2]. Global warming and ocean acidification caused by increasing atmospheric CO2 levels have already resulted in a series of changes to marine ecosystems, such as mass coral-bleaching episodes in many of the world's reefs [3].…”

Section: Introductionmentioning

confidence: 99%

Influence of gas management on biochemical conversion of CO2 by microalgae for biofuel production

Chen

Vaidyanathan

2020

Applied Energy

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The photosynthetic capacity of algae as a primary producer in nature and the relative ease of its cultivation on a large scale make it attractive to explore opportunities and develop algal technology for simultaneous sequestration of industrial and atmospheric CO2 (to mitigate climate change), whilst developing sustainable processes for manufacturing renewable fuels alongside biochemicals of value. The development of strategies that maximise algal product yield while optimising the CO2 gas supply is needed for the appropriate scale-up of algal technology. One of the main targets of this technology is the potential exploitation of flue gases, an inexpensive and carbon-rich source. So far, the growth of microalgae has predominantly been investigated using relatively low CO2 concentrations that are far from the levels offered by flue gas (6-25%), which are more useful for energy generation with concomitant development of carbon neutral processes. Here, we tested a series of gas supply 2 strategies to investigate microalgal growth at high CO2 levels with the aim to improve algal CO2 fixation and lipid accumulation. Optimal growth of Nannochloropsis salina (a marine algae) occurred at 6% CO2, whilst few cells grew under 20% CO2. Excess CO2 resulted in medium acidification, pigment reduction, and growth inhibition. However, the fixation capacity of CO2 and the production of specific lipids were improved by O2 removal from the inlet gas by up to 4.8-fold and 4.4-fold, respectively. These parameters were further improved by 72% and 25%, respectively, via a gradual increase in CO2 concentration. Extremely high CO2 levels (100%) completely inhibited cell growth, but this effect was reversed when air containing atmospheric CO2 levels was introduced in place of 100% CO2. These findings will allow for the future development of more effective strategies using algal biotechnology for producing biofuel while mitigating carbon emissions.

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Section: Introductionmentioning

confidence: 99%

Influence of gas management on biochemical conversion of CO2 by microalgae for biofuel production

Chen

Vaidyanathan

2020

Applied Energy

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“…If the exposure time and dose of flue gas can be determined through further research, the CO 2 in the flue gas can be used efficiently, and innovative applications of microalgal biomass compounds can be managed. Not only can CO 2 be fixed, but also the C footprint of microalgal biomass production can significantly reduce costs of CO 2 treatment 96 …”

Section: Microalgae‐co2‐biomass Cycle Systemmentioning

confidence: 99%

Advances in the biological fixation of carbon dioxide by microalgae

Zhang

Liu

2021

J of Chemical Tech & Biotech

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Global warming caused by carbon dioxide (CO2) emissions is one of the most important topics of concern in the fields of science, environment and global economy. Carbon dioxide emissions have increased dramatically in recent years, and this trend is likely to continue with a projected increase of both global energy consumption and CO2 emissions by 51% in 2050 compared with 2005. To mitigate the negative impacts arising, a potential strategy to convert CO2 into renewable fuels or valuable chemicals can be applied. Bio‐CO2 emission reduction is receiving more and more attention as an environmentally friendly method. Microalgae are attracting worldwide attention in this regard owing to their exceptional speed of growth, resistance to harsh environments and low production costs. In this review, the biochemical principles of microalgae‐CO2 fixation and the research progress of microalgae strains used for CO2 fixation are reviewed and discussed. The latest progress in the co‐development of a microalgae carbon sequestration industry and other industries are provided, along with a survey of the progress in methods to improve microalgae‐CO2 fixation. Finally, the problems to be solved in the industry and its future directions of development are clarified. © 2021 Society of Chemical Industry (SCI).

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“…Na literatura científica são relatados resultados de produção de biomassa de microalgas do gênero Scenedesmus em cultivo autotrófico com adição de CO2 em concentrações variando entre 2 e 20%, alcançando resultados de geração de biomassa significativamente superior ao uso do ar ambiente (BASU et al, 2013;HUANG et al, 2020;RODAS-ZULUAGA et al, 2021). Além de dados da utilização de CO2 puro aos cultivos, é possível encontrar resultados da adição de emissões diversas, desde a utilização de gases originários da combustão de diesel, carvão ou resíduos sólidos (MAEDA et al, 1995;LEE et al, 2002;WANG et al, 2008;JIANG et al, 2013;SINGH et al, 2019).…”

Section: Fatores Físicos E Químicos: Luz Temperatura Fonte De Carbono E Aeraçãounclassified

Produção de biomassa microalgal em escala: desafios e oportunidades

Santos¹,

Corrêa²,

Selesu³

et al. 2021

Microalgas: Potenciais Aplicações E Desafios

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Bio-fixation of flue gas from thermal power plants with algal biomass: Overview and research perspectives

Cited by 77 publications

References 113 publications

Influence of gas management on biochemical conversion of CO2 by microalgae for biofuel production

Influence of gas management on biochemical conversion of CO2 by microalgae for biofuel production

Advances in the biological fixation of carbon dioxide by microalgae

Produção de biomassa microalgal em escala: desafios e oportunidades

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