An assessment of the economic aspects of CO<sub>2</sub>sequestration in a route for biodiesel production from microalgae

Soares, Fabio Rubens; Martins, Gilberto; Seo, Emília Satoshi Miyamaru

doi:10.1080/09593330.2013.816784

Cited by 19 publications

(7 citation statements)

References 19 publications

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“…The use of wastewater as a source of nutrients could also contribute to reduce the operating costs of producing microalgal biomass on a small scale, serving the dual objective of water recycling and bioenergy production [42e44]. Cost savings could also be achieved by taking profit from carbon credits of CO 2 remediation, for example by growing microalgae in the proximity of CO 2 emission points such as large-scale incinerators [43,45]. Nonetheless, despite the overall unfavorable economic context of bioH 2 production, the lesser developed is the technology, the wider are the improvement possibilities and the consequent cost reductions.…”

Section: Viability Of Hydrogen Production From Microalgal Biomassmentioning

confidence: 99%

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

Ortigueira

Pinto

Gouveia

et al. 2015

Energy

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a b s t r a c tThe biological hydrogen production from Spirogyra sp. biomass was studied in a SBR (sequential batch reactor) equipped with a biogas collecting and storage system. Two acid hydrolysis pre-treatments (1N and 2N H 2 SO 4 ) were applied to the Spirogyra biomass and the subsequent fermentation by Clostridium butyricum DSM 10702 was compared. The 1N and 2N hydrolyzates contained 37.2 and 40.8 g/L of total sugars, respectively, and small amounts of furfural and HMF (hydroxymethylfurfural). These compounds did not inhibit the hydrogen production from crude Spirogyra hydrolyzates. The fermentation was scaled up to a batch operated bioreactor coupled with a collecting system that enabled the subsequent characterization and storage of the biogas produced. The cumulative hydrogen production was similar for both 1N and 2N hydrolyzate, but the hydrogen production rates were 438 and 288 mL/L.h, respectively, suggesting that the 1N hydrolyzate was more suitable for sequential batch fermentation. The SBR with 1N hydrolyzate was operated continuously for 13.5 h in three consecutive batches and the overall hydrogen production rate and yield reached 324 mL/L.h and 2.59 mol/mol, respectively. This corresponds to a potential daily production of 10.4 L H 2 /L Spirogyra hydrolyzate, demonstrating the excellent capability of C. butyricum to produce hydrogen from microalgal biomass.

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Section: Viability Of Hydrogen Production From Microalgal Biomassmentioning

confidence: 99%

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

Ortigueira

Pinto

Gouveia

et al. 2015

Energy

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“…Utilization of CO 2 for microalgae cultivation has some advantages such as low cost, direct CO 2 capturing from exhaust gas and simplicity in operation. Some researches confirm that microalgae are capable of biofixating 10-50 times more carbon dioxide than terrestrial plants (Li et al, 2008;Rosenberg et al, 2011;Soares et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

CARBON DIOXIDE BIOFIXATION BY Chlorella sp. IN A BUBBLE COLUMN REACTOR AT DIFFERENT FLOW RATES AND CO2 CONCENTRATIONS

Pourjamshidian

Abolghasemi

Esmaili

et al. 2019

Braz. J. Chem. Eng.

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CO 2 biofixation of the microalgae Chlorella sp. for different CO 2 concentrations and gas flow rates in a bubble column reactor has been investigated in this study. Microalgae were cultivated under different CO 2 concentrations (at 1.75% and 9.45% v/v) and gas flow rates (at 30, 50 and 70 ml/min). The maximum specific growth rate of Chlorella sp. was obtained for the CO 2 concentration of 1.75 % and the gas flow rate of 50 mL/min. The highest biomass productivity rate (at 0.17 g L-1 day-1) was for a sample with 1.75 % CO 2 at a flow rate of 70 ml/min. Moreover, the results have shown that the specific growth rate and CO 2 biofixation have a direct relation with culturing of Chlorella sp. Also, limiting CO 2 supplementation noticeably decreased biomass concentration. Therefore, the results have shown that a high flow rate and low concentration of CO 2 might promote a decrease in CO 2 fixation efficiency by Chlorella sp.

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“…1 Since conventional energy resources are neither cheap nor environmentally friendly. Conventional energy resources produce CO 2 (greenhouse gas), which is a potential threat to the environmental recipients.…”

Section: Introductionmentioning

confidence: 99%

Enhancing Lipid Production of Dunaliella tertiolecta by Manipulating the Interactive Effect of Salinity and Nitrogen

Rizwan

Mujtaba

Rashid

et al. 2017

Chem.Biochem.Eng.Q.

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Low lipid yield is a major bottleneck towards the scale-up application of microalgae for biodiesel production. The focus of this study was to improve the lipid production of Dunaliella tertiolecta (a marine microalga) by altering the concentration of salinity and nitrogen (as nutrients). The unique aspect of this study was to investigate the interactive effect of nitrogen and salinity on lipid production and their correlation with biomass yield and nitrogen uptake. In this experiment, microalgae were grown under various combinations of salinity and nitrogen. At first, lipid production was observed under varied nitrogen concentration (0-75 mg L -1 as NaNO 3 ) and fixed salinity, 37.7 Practical Salinity Unit (PSU). The maximum cell growth rate of 288.4 mg L -1 d -1 and lipid production of 29.3 % were achieved at 75 mg L -1 of NaNO 3 . Now, this concentration of nitrogen was fixed and the effects of salinity concentrations were observed. The lipid production increased to 34 %, and cell growth rate decreased to 201.3 mg L -1 d -1 at 3.77 PSU of salinity. However, further reduction of the nitrogen concentration down to 18.75 mg L -1 of NaNO 3 increased the lipid production to 42 % and decreased biomass to 0.64 g L -1 . It was also found that lipid production was linearly correlated with nitrogen uptake. Microalgae cells consumed all of the nitrogen in the first 24 hours of acclimation; however, lipid yield did not change much over time.

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An assessment of the economic aspects of CO₂sequestration in a route for biodiesel production from microalgae

Cited by 19 publications

References 19 publications

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

CARBON DIOXIDE BIOFIXATION BY Chlorella sp. IN A BUBBLE COLUMN REACTOR AT DIFFERENT FLOW RATES AND CO2 CONCENTRATIONS

Enhancing Lipid Production of Dunaliella tertiolecta by Manipulating the Interactive Effect of Salinity and Nitrogen

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An assessment of the economic aspects of CO2sequestration in a route for biodiesel production from microalgae

Cited by 19 publications

References 19 publications

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

Production and storage of biohydrogen during sequential batch fermentation of Spirogyra hydrolyzate by Clostridium butyricum

CARBON DIOXIDE BIOFIXATION BY Chlorella sp. IN A BUBBLE COLUMN REACTOR AT DIFFERENT FLOW RATES AND CO2 CONCENTRATIONS

Enhancing Lipid Production of Dunaliella tertiolecta by Manipulating the Interactive Effect of Salinity and Nitrogen

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An assessment of the economic aspects of CO₂sequestration in a route for biodiesel production from microalgae