Bio-inspired CO2 capture and utilization by microalgae for bioenergy feedstock production: A greener approach for environmental protection

Mohapatra, Ranjan K.; Padhi, Diptymayee; Sen, Ramkrishna; Nayak, Manoranjan

doi:10.1016/j.biteb.2022.101116

Cited by 20 publications

(12 citation statements)

References 119 publications

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“…40 The utilization of captured CO 2 in the food and beverage industry, the dry ice industry or for firefighting, exemplifies how CCU has already been integrated into existing processes. 41 Furthermore, scaling up CCU can lead to the production of bulk and fine chemicals, 42 plastics, 43 construction materials and even sustainable fuels, all of which contribute to a circular carbon economy by recycling and reusing CO 2 as a raw material.…”

Section: Carbon Capture and Utilization (Ccu) Technologymentioning

confidence: 99%

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Decarbonization in Australia and India: Bilateral Opportunities and Challenges for the Net Zero Transformation

Solomon,

Rabha,

Fimbres-Weihs

et al. 2024

ACS Eng. Au

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The global Net Zero transformation is a vital response to the climate change crisis. Australia and India face similar challenges due to their reliance on fossil resources, growing energy demand, and agricultural emissions. However, differences exist in the population, industry, and development. This perspective explores these comparisons between Australia and India’s Net Zero aspirations and current sociopolitical and economic drivers. As part of the portfolio of options needed to address net zero goals, Carbon Capture, Utilization, and Storage (CCUS) and Carbon Dioxide Removal (CDR) solutions are specifically discussed. The perspective concludes with opportunities for the nations to engage in knowledge sharing and bilateral partnerships to help accelerate the world’s transformation to Net Zero.

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Section: Carbon Capture and Utilization (Ccu) Technologymentioning

confidence: 99%

“…In addition to the physicochemical routes for CCU, biochemical routes are gathering momentum as these routes have the potential to consume up to 1.83 kg of CO 2 for every kg of biomass produced . These routes rely on microalgae and cyanobacterial cultivation for the CO 2 capture.…”

Section: Technology Enabling Decarbonizationmentioning

confidence: 99%

Decarbonization in Australia and India: Bilateral Opportunities and Challenges for the Net Zero Transformation

Solomon,

Rabha,

Fimbres-Weihs

et al. 2024

ACS Eng. Au

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“…A significant number of studies reported the effect of the photoperiod cycles on cell growth and CO 2 fixation efficiency in a wide variety of microalgae cultures. Overall, it was reported that the photoperiod impact directly on the metabolic pathways and growth rate (Mohapatra et al 2022). Yang et al (2022) stated that cell density, CO 2 fixation ability, and the production of pigments, lipids, and proteins reached the maximum value by using a longer light photoperiod.…”

Section: Introductionmentioning

confidence: 99%

Effect of carbon dots supplementation in Chlorella vulgaris biomass production and its composition

Solis Flores,

López-Pacheco,

Villalba-Rodriguez

et al. 2024

Nano Ex.

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Microalgae cultures have an excellent ability to capture CO2 and produce high, medium, and low valuable biocompounds such as proteins, carbohydrates, lipids, pigments, and polyhydroxyalkanoates; those compounds have shown excellent properties in the pharmaceutical, cosmetic, food, and medical industries. Recently, the supplementation of carbon dots (CDs) in microalgae cultures has been explored as a new strategy to increase light capture and improve photoluminescence, which in turn enhances biomass growth and biocompounds production. In this work, we synthesized CDs through a simple carbonization method using orange juice as a natural precursor. The green synthesized CDs were analyzed in detail through characterization techniques such as Fourier-transform infrared spectroscopy (FTIR), UV–visible, fluorescence spectroscopy, and ζ potential analysis. Moreover, CDs were added to Chlorella vulgaris to analyze the response under different photoperiod cycles and CDs dosages. The optimal results were obtained with the addition of 0.5 mg/L of CDs under a photoperiod cycle of 16h:8h (light:dark). In these conditions, a maximum biomass production of 2.12 g/L was observed, which represents an enhancement of 112% and 17% in comparison to the control samples under the photoperiod of 12h:12 h and 16h:8h (light/dark), respectively. Furthermore, the production of lipids, proteins, and carbohydrates was significantly increased to 249 mg/g, 285 mg/g, and 217 mg/g dry weight, respectively. These results suggest that the addition of CDs enhances cell growth and increases the production of lipids and proteins, being a strategy with great potential for the food and pharmaceutical industries.

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“…Therefore, microalgal strains that are acclimated to high levels of CO 2 are preferred for a successful process. In the culture medium used for algal production, wastewater is occasionally added to remove nitrogen and phosphorus as well as to stimulate algal growth [10,11]. Although algal biomass produced in wastewater can be used as a feedstock for biofuel production, it is not suitable for use as food/feed additives or nutraceuticals, from the hygienic standpoint.…”

Section: Introductionmentioning

confidence: 99%

Biogas Upgrading by Wild Alkaliphilic Microalgae and the Application Potential of Their Biomass in the Carbon Capture and Utilization Technology

Kikuchi,

Kanai,

Sugiyama

et al. 2024

Fermentation

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Although biogas is a renewable energy source alternative to natural gas, it contains approximately 40 vol% CO2 and, hence, a low calorific value. The sequestration of CO2 from biogas is, therefore, essential before its widespread use. As CO2 can be easily solubilized as carbonate and bicarbonate in alkaline water, in this study, we isolated and characterized alkaliphilic wild microalgae that grow under high-level CO2 conditions and evaluated their application potential in CO2-removal from biogas. For this purpose, freshwater samples were enriched with 10 vol% CO2 and an alkaline culture medium (pH 9.0), wherein almost free CO2 was converted to carbonate and bicarbonate to yield alkaliphilic and high-level CO2-tolerant microalgae. Ten microalgal strains of Micractinium, Chlorella, Scenedesmus/Tetradesmus, or Desmodesmus spp. were isolated, some of which demonstrated good growth even under conditions of >pH 10 and >30 vol% CO2. All algal strains grew well through fixing biogas-derived CO2 in a vial-scale biogas upgrading experiment, which reduced the CO2 level in biogas to an undetectable level. These strains yielded antioxidant carotenoids, including lutein, astaxanthin, zeaxanthin, and β-carotene, particularly rich in lutein (up to 7.3 mg/g dry cells). In addition, these strains contained essential amino acids, accounting for 42.9 mol% of the total amino acids on average, and they were rich in unsaturated fatty acids (comprising 62.2 wt% of total fatty acids). The present study identified strains that can contribute to biogas upgrading technology, and the present findings suggest that their biomass can serve as useful raw material across the food, nutraceutical, and feed industries.

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Bio-inspired CO2 capture and utilization by microalgae for bioenergy feedstock production: A greener approach for environmental protection

Cited by 20 publications

References 119 publications

Decarbonization in Australia and India: Bilateral Opportunities and Challenges for the Net Zero Transformation

Decarbonization in Australia and India: Bilateral Opportunities and Challenges for the Net Zero Transformation

Effect of carbon dots supplementation in Chlorella vulgaris biomass production and its composition

Biogas Upgrading by Wild Alkaliphilic Microalgae and the Application Potential of Their Biomass in the Carbon Capture and Utilization Technology

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