Optimization of growth operational conditions for CO2 biofixation by native Synechocystis sp.

Martínez, Lorena; Redondas, Vanesa; Garcı́a, Ana; Morán, Antonio

doi:10.1002/jctb.2568

Cited by 21 publications

(13 citation statements)

References 31 publications

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“…In this regard, it is worth noting that industrial flue gases can show a very wide range of chemical compositions depending on the specific industrial process by which they are produced. Martinez et al (2011) For this reason, the possibility of using microalgae for the CO 2 capture from flue gases should be preceded by a detailed analysis of their chemical composition.…”

Section: Potential Limitations To the Usementioning

confidence: 99%

Engineering Aspects Related to the Use of Microalgae for Biofuel Production and CO2 Capture from Flue Gases

Concas

Pisu

Cao

2014

Current Environmental Issues and Challenges

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The recent achievements in the field of CO 2 capture and biofuel production through microalgae are presented in this chapter. Specifically, after a brief analysis of the main biological, chemical, and physical phenomena involved in the photosynthetic conversion of CO 2 to biofuels, the current technologies for CO 2 capture, microalgae growth, biomass harvesting, and lipid extraction are critically assessed with a particular focus on the potential exploitation of recent research results at the industrial scale. Finally, future scientific and technological directions for the direct CO 2 capture from flue gases through microalgae are also proposed.

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Section: Potential Limitations To the Usementioning

confidence: 99%

Engineering Aspects Related to the Use of Microalgae for Biofuel Production and CO2 Capture from Flue Gases

Concas

Pisu

Cao

2014

Current Environmental Issues and Challenges

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“…Several studies have been performed to describe Synechocystis sp. growth under various irradiances [9][10][11], temperatures [12][13][14][15][16][17], CO 2 , and nutrient concentrations [18,19] as well as under combination of selected factors [20]. Growth characterization under the combination of all mentioned factors in the photobioreactor has been also reported [11], however, the study was done on separately isolated strain that may differ phenotypically from original Synechocystis sp., as well as from other commonly used Synechocystis sp.…”

Section: Introductionmentioning

confidence: 99%

Characterization of a model cyanobacterium Synechocystis sp. PCC 6803 autotrophic growth in a flat‐panel photobioreactor

Zavřel

Sinetova

Búzová

et al. 2015

Engineering in Life Sciences

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We characterized the photoautotrophic growth of glucose-tolerant Synechocystis sp. PCC 6803 in a flat-panel photobioreactor running on a semicontinuous regime under various lights, temperatures, and influx carbon dioxide concentrations. The maximum reached growth rate was 0.135 h −1 , which corresponds to a doubling time of 5.13 h-a growth speed never reported for Synechocystis before. Saturating red light intensity for the strain was 220-360 μmol(photons) m −2 s −1 , and we did not observe any photoinhibition up to 660 μmol(photons) m −2 s −1 . Synechocystis was able to grow under red light only; however, photons of wavelengths 405-585 and 670-700 nm further improved its growth. Optimal growth temperature was 35°C. Below 32°C, the growth rates decreased linearly with temperature coefficient (Q 10 ) 1.70. Semicontinuous cultivation is known to be efficient for growth characterization and optimization. However, the assumption of correct growth rates calculationculture exponential growth-is often not fulfilled. The semicontinuous setup in this study was operated as a turbidostat. Accurate online OD measurements with high time-resolution allowed fast and reliable growth rates determination. Repeating diluting frequencies (up to 18 dilutions per day) were essential for rapid growth stability evaluation. The presented setup provides improvement to previously published semicontinuous characterization strategies by decreasing experimental time requirements and maintaining the culture in exponential growth phase throughout the entire characterization procedure.

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“…in a photobioreactor at three different light intensities of 50, 100, and 200 μmol m −2 s −1 and reported a maximum cell concentration of 6.5 × 10 7 cells mL −1 at 100 μmol m −2 s −1 and an 18 h d −1 photoperiod. Martinez et al 7 reported an optimum biofixation rate of 2.07 gCO 2 L −1 d −1 when culturing Synechocystis sp. at a light intensity of 686 μmol m −2 s −1 .…”

Section: Introductionmentioning

confidence: 99%

Modified Photobioreactor for Biofixation of Carbon Dioxide by Chlorella vulgaris at Different Light Intensities

2015

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The performance of a modified bioreactor inside a light enclosure for carbon dioxide biofixation by Chlorella vulgaris was investigated. The influence of different light intensities on the CO 2 biofixation and biomass production rates was evaluated. The results showed that the photon flux available to the microalgal cultures can be a key issue in optimizing the microalgae photobioreactor performance, particularly at high cell concentrations. Although the optimal pH values for C. vulgaris are in the range of 6-8, cell growth can take place even at pH 4 and 10. Batch microalgae cultivation in the photobioreactor was used to investigate the effect of different light intensities. The maximum biomass concentration of 1.83 g L -1 was obtained at a light intensity of 100 μmol m -2 s -1 and under aeration with 2 L min -1 of 2 % CO 2 -enriched air.

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Optimization of growth operational conditions for CO2 biofixation by native Synechocystis sp.

Cited by 21 publications

References 31 publications

Engineering Aspects Related to the Use of Microalgae for Biofuel Production and CO2 Capture from Flue Gases

Engineering Aspects Related to the Use of Microalgae for Biofuel Production and CO2 Capture from Flue Gases

Characterization of a model cyanobacterium Synechocystis sp. PCC 6803 autotrophic growth in a flat‐panel photobioreactor

Modified Photobioreactor for Biofixation of Carbon Dioxide by Chlorella vulgaris at Different Light Intensities

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