Carbon dioxide capture from carbon dioxide–rich gases by microalgae

Ibrahim, F.; Torre, Raúl Muñoz; Llamas, Bernardo; Crespo, Ignacio de Godos

doi:10.1016/b978-0-12-819064-7.00018-2

Cited by 7 publications

(6 citation statements)

References 51 publications

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“…These intensive algal cultures systems are designed to support high areal irradiations and offer a better control of environmental conditions (less risk of contamination, temperature control, etc.) but the energy consumption and material costs are significantly higher than those of their open counterparts (Acién et al, 2017;Ibrahim et al, 2020).…”

Section: Purple Phototrophic Bacteriamentioning

confidence: 94%

“…The arrangement of the solar collector tubes determines the irradiated surface and light received by algae cells. The high construction and operational costs compared to raceways have hampered the use of this complex technology for WWT purposes (Ibrahim et al, 2020). In this context, de Godos et al (2017) compared the performance of tubular reactors with raceway systems and observed that although high nutrient removals were reached in the enclosed unit (98% for N and P), collapse of algae cultures was reported after 30 days of operation due to biofouling.…”

Section: Enclosed Photobioreactorsmentioning

confidence: 99%

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Pathways to Water Sector Decarbonization, Carbon Capture and Utilization

2022

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The water sector is in the middle of a paradigm shift from focusing on treatment and meeting discharge permit limits to integrated operation that also enables a circular water economy via water reuse, resource recovery, and system level planning and operation. While the sector has gone through different stages of such revolution, from improving energy efficiency to recovering renewable energy and resources, when it comes to the next step of achieving carbon neutrality or negative emission, it falls behind other infrastructure sectors such as energy and transportation. The water sector carries tremendous potential to decarbonize, from technological advancements, to operational optimization, to policy and behavioural changes. This book aims to fill an important gap for different stakeholders to gain knowledge and skills in this area and equip the water community to further decarbonize the industry and build a carbon-free society and economy. The book goes beyond technology overviews, rather it aims to provide a system level blueprint for decarbonization. It can be a reference book and textbook for graduate students, researchers, practitioners, consultants and policy makers, and it will provide practical guidance for stakeholders to analyse and implement decarbonization measures in their professions. ISBN: 9781789061789 (Paperback) ISBN: 9781789061796 (eBook) ISBN: 9781789061802 (ePUB)

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Section: Purple Phototrophic Bacteriamentioning

confidence: 94%

Section: Enclosed Photobioreactorsmentioning

confidence: 99%

Pathways to Water Sector Decarbonization, Carbon Capture and Utilization

2022

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“…After releasing flue gas, removing such emissions is still at the 50 to 200 ppm-level. Nitric oxide cannot directly Table 5 Characteristics of photobioreactor systems for microalgal cultivations for carbon bioconversion (Paul et al 2021;Klinthong et al 2015;Ibrahim et al 2020;Severo et al 2019;Ruiz-Ruiz et al 2020) Open ponds have carbon dioxide diffuse limitations. Tubular photobioreactors have high residence time and have low carbon dioxide losses.…”

Section: Nitrogen Oxide Emissionsmentioning

confidence: 99%

Algal biomass valorization for biofuel production and carbon sequestration: a review

et al. 2022

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The world is experiencing an energy crisis and environmental issues due to the depletion of fossil fuels and the continuous increase in carbon dioxide concentrations. Microalgal biofuels are produced using sunlight, water, and simple salt minerals. Their high growth rate, photosynthesis, and carbon dioxide sequestration capacity make them one of the most important biorefinery platforms. Furthermore, microalgae's ability to alter their metabolism in response to environmental stresses to produce relatively high levels of high-value compounds makes them a promising alternative to fossil fuels. As a result, microalgae can significantly contribute to long-term solutions to critical global issues such as the energy crisis and climate change. The environmental benefits of algal biofuel have been demonstrated by significant reductions in carbon dioxide, nitrogen oxide, and sulfur oxide emissions. Microalgae-derived biomass has the potential to generate a wide range of commercially important high-value compounds, novel materials, and feedstock for a variety of industries, including cosmetics, food, and feed. This review evaluates the potential of using microalgal biomass to produce a variety of bioenergy carriers, including biodiesel from stored lipids, alcohols from reserved carbohydrate fermentation, and hydrogen, syngas, methane, biochar and bio-oils via anaerobic digestion, pyrolysis, and gasification. Furthermore, the potential use of microalgal biomass in carbon sequestration routes as an atmospheric carbon removal approach is being evaluated. The cost of algal biofuel production is primarily determined by culturing (77%), harvesting (12%), and lipid extraction (7.9%). As a result, the choice of microalgal species and cultivation mode (autotrophic, heterotrophic, and mixotrophic) are important factors in controlling biomass and bioenergy production, as well as fuel properties. The simultaneous production of microalgal biomass in agricultural, municipal, or industrial wastewater is a low-cost option that could significantly reduce economic and environmental costs while also providing a valuable remediation service. Microalgae have also been proposed as a viable candidate for carbon dioxide capture from the atmosphere or an industrial point source. Microalgae can sequester 1.3 kg of carbon dioxide to produce 1 kg of biomass. Using potent microalgal strains in efficient design bioreactors for carbon dioxide sequestration is thus a challenge. Microalgae can theoretically use up to 9% of light energy to capture and convert 513 tons of carbon dioxide into 280 tons of dry biomass per hectare per year in open and closed cultures. Using an integrated microalgal bio-refinery to recover high-value-added products could reduce waste and create efficient biomass processing into bioenergy. To design an efficient atmospheric carbon removal system, algal biomass cultivation should be coupled with thermochemical technologies, such as pyrolysis.

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“…Compared to landbased photosynthetic organisms, microalgae have a fast cell reproduction rate and high biomass production, with less than 1% of the biomass of land-based photosynthetic organisms being able to fix half of the annual CO 2 emissions into organic matter. In summary, marine microalgae can use CO 2 as a carbon source and convert it into organic matter through photosynthesis using sunlight as an energy source (Ibrahim et al, 2020), thus aiding in carbon sequestration.…”

Section: Introductionmentioning

confidence: 99%

Effects of selective RNA processing and stabilization enzymes on carbon sequestration by photosynthesis of Synechococcus sp. PCC7002

et al. 2023

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Synechococcus is one of the most abundant prokaryotic photosynthetic organisms on Earth and plays a key role in oceanic carbon fixation and transformation. To improve the photosynthetic efficiency of synechococcus, a post-transcriptional regulatory mechanism - Selective RNA Processing and Stabilization (SRPS) was considered. We inactivated the SRPS-enzymes, executor of the SRPS mechanism, to explore their regulation rule of photosynthetic carbon fixation efficiency in Synechococcus. The results showed that the inactivation of SRPS-enzymes mainly affected the growth rate or growth phase. It significantly alters the photosynthetic oxygen evolution rate, pigment content, chlorophyll fluorescence, carbon and nitrogen content, as well as the composition and biological activity of the dissolved organic matter derived from Synechococcus (SOM). Inactivating SRPS-enzymes results in an increase in the expression level of most subunits of the Cytochrome b6-f complex, while the expression levels of most subunits of PSI, PSII, RuBisCO, and NDH decrease. All SRPS-enzymes are involved in the expression regulation of basilic protein complexes in photosynthesis, such as PSI, PSII, Cytochrome b6-f complex, ATP synthase, and RuBisCO. Our results indicate that the inactivation of SRPS-enzymes have a significant influence on carbon sequestration by photosynthesis of Synechococcus sp. PCC7002.

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Carbon dioxide capture from carbon dioxide–rich gases by microalgae

Cited by 7 publications

References 51 publications

Pathways to Water Sector Decarbonization, Carbon Capture and Utilization

Pathways to Water Sector Decarbonization, Carbon Capture and Utilization

Algal biomass valorization for biofuel production and carbon sequestration: a review

Effects of selective RNA processing and stabilization enzymes on carbon sequestration by photosynthesis of Synechococcus sp. PCC7002

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