UTILIZATION OF CO2 IN SEMI-CONTINUOUS CULTIVATION OF Spirulina sp. AND Chlorella fusca AND EVALUATION OF BIOMASS COMPOSITION

Moreira, Juliana Botelho; Terra, Ana Luiza Machado; Costa, J. A. V.; Morais, Michele Greque de

doi:10.1590/0104-6632.20160333s20150135

Cited by 25 publications

(5 citation statements)

References 23 publications

(22 reference statements)

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“…1a). The specific growth rates of the last cycles were similar to that found by Moreira et al (2016), which was 0.060 1/d, in cultivation of Spirulina sp. LEB 18 in Zarrouk medium on a laboratorial scale and 20% renewal rate.…”

Section: Kinetic Parameters Of Spirulina Sp Leb 18 Growthsupporting

confidence: 84%

INDUSTRIAL PLANT FOR PRODUCTION OF Spirulina sp. LEB 18

Uebel

Costa

Olson³

et al. 2019

Braz. J. Chem. Eng.

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Biorefineries based on microalgae produce biofuels and co-products with added value. Microalgae mainly require water, carbon dioxide and sunlight for growth. The bioproducts of the cultivation of these microorganisms can be fully used in a microalgae photobiorefinery. The objective of this work was to study the behavior of physico-chemical variables and kinetic and biological responses in industrial cultivation of Spirulina sp. LEB 18, aiming at the operation of a microalgal photobiorefinery. The maximum specific growth rate (0.133 1/d), the minimum generation time (5.2 d) and maximum productivity (14.9 g/m².d) were obtained in the first 9 d of microalgae growth. The maximum biomass concentration (1.64 g/L) was obtained in 37 d of cultivation. The highest levels of carbohydrates, proteins and lipids in the biomass were 10.6, 57.0 and 11.7%, respectively. The plant monitoring demonstrated that the microalgae produced biomass with high quality for application as biofuels, energy, health and nutrition human.

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Section: Kinetic Parameters Of Spirulina Sp Leb 18 Growthsupporting

confidence: 84%

INDUSTRIAL PLANT FOR PRODUCTION OF Spirulina sp. LEB 18

Uebel

Costa

Olson³

et al. 2019

Braz. J. Chem. Eng.

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“…DCW determined at different time intervals was used to calculate specific growth rate in terms of µ (mg d −1 ), calculated using Equation (). [ 49 ]

\begin{equation}\mu = {\mathrm{ln}}\,{\mathrm{X}} - {\mathrm{lnX}}_0/{\mathrm{t}}\end{equation}

where, ‘µ’ is the specific growth rate, ‘lnX 0 ’ is natural logarithm of the initial DCW, and ‘lnX’ is natural logarithm of the final DCW at a particular time ‘t’.…”

Section: Methodsmentioning

confidence: 99%

“…DCW determined at different time intervals was used to calculate specific growth rate in terms of μ (mg d −1 ), calculated using Equation ( 5). [49] 𝜇 = ln X − lnX 0 ∕t…”

Section: Cod Removal Efficiencymentioning

confidence: 99%

Cascading Integration of Electrofermentation and Photosynthesis—Low‐Carbon Biorefinery in Closed Loop Approach

Sravan,

Hemalatha,

Mohan

2023

Advanced Sustainable Systems

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Single‐chambered electrofermentation (EF) bioreactors are operated using spent wash to evaluate the effect of applied voltage (EF/AV; −0.6 V) against closed‐circuit (EF/CC; 100 Ω) and control (EF/C; no voltage/resistance) operations using deoiled microalgae biomass‐derived biochar electrodes (anode) on increasing acidogenesis rate/efficiency. Higher total volatile fatty acids (VFA) production (mg L−1) is observed in EF/AV (2866), depicting 31% and 57% increments than EF/CC (1984) and EF/C (1224), respectively. The VFA profiles (C2–C4) in EF/AV are higher with acetic/butyric/propionic acids (1922/704/240 mg L−1) and biogas co‐generation [H2 (22%) and CH4 (3%)] than EF/CC and EF/C. The applied voltage (EF/AV) helps in electron flux regulation for increasing substrates conversion and VFA generation. Residual VFA‐rich effluents from EF process is utilized as substrate to mixotrophic microalgae cultivation (nutrient‐ and stress‐phase) that resulted in biomass production with simultaneous wastewater treatment. EF/AV depicted higher biomass growth (0.72 g L−1; 4th day) and substrate removal (63%) than other operations. Integrations of electrofermentation with photosynthetic processes operated with the residual resources in effluents towards product valorization and wastewater polishing, accounts for low‐carbon economy.

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Section: Introductionmentioning

confidence: 99%

“…Improvement of the nutrient medium for cultivating microalgae is carried out to increase the efficiency of CO 2 capture [54][55][56]. For example, the initial deficiency of NH 4 HCO 3 is more favorable for the growth of microalgae [55,56]. The addition of sodium bicarbonate to the nutrient medium led to a significant increase in the amount of biomass and the productivity of the carbon dioxide utilization process [57][58][59].…”

Section: Introductionmentioning

confidence: 99%

Carbon Dioxide Utilization Using Chlorella Microalgae

et al. 2023

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The problem of the excessive CO2 emitted into the atmosphere is one of the significant problems for the modern world and ecology. This article examines the dynamics of carbon dioxide absorption from thermal power plants, TPP, and waste gases by three types of microalgae, the most typical for the Russian Federation: Chlorella kessleri, Chlorella vulgaris, and Chlorella sorokiniana. The exhaust gases of the TPP contain up to 39% carbon dioxide. In this work, the rate of absorption of carbon dioxide from model exhaust gases with a CO2 content of up to 39% was studied. As a result of the study, a species of microalgae (Chlorella vulgaris) was identified, characterized by the maximum rate of absorption of CO2 = 0.412 g/L·day and the maximum volume of CO2 utilized in 1 day = 8.125 L. The conducted research proved the possibility of utilizing a large content (up to 39%) of carbon dioxide from the exhaust gases of the TPP with the help of microalgae of the genus Chlorella. A scheme for the utilization of CO2 with the help of microalgae is also proposed, which meets the principles of a circular economy (closed cycle).

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UTILIZATION OF CO2 IN SEMI-CONTINUOUS CULTIVATION OF Spirulina sp. AND Chlorella fusca AND EVALUATION OF BIOMASS COMPOSITION

Cited by 25 publications

References 23 publications

INDUSTRIAL PLANT FOR PRODUCTION OF Spirulina sp. LEB 18

INDUSTRIAL PLANT FOR PRODUCTION OF Spirulina sp. LEB 18

Cascading Integration of Electrofermentation and Photosynthesis—Low‐Carbon Biorefinery in Closed Loop Approach

Carbon Dioxide Utilization Using Chlorella Microalgae

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