Influence of Ventilation Modes on Carbon Dioxide Fixation of <i>Chlorella vulgaris</i> in a Flat-Plate Photobioreactor

Yongfu Li; Ruiqian Li; Haifang Fu; Ying Gao

doi:doi:10.11648/j.earth.20180706.14

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Influence of Ventilation Modes on Carbon Dioxide Fixation of Chlorella vulgaris in a Flat-Plate Photobioreactor

Yongfu Li, Ruiqian Li, Haifang Fu, Ying Gao

Published in Earth Sciences (Volume 7, Issue 6)

Received: 9 December 2018 Published: 11 December 2018

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Abstract

Microalgae have the ability to mitigate CO₂ emission with a high productivity, thereby having the potential for applications in reducing CO₂ with high concentration. To date the effect of different ventilation modes in photobioreactor on the high level CO₂ fixing capacity was still unclear. To explore an efficient, convenient and cheap aerating method for high concentration CO₂, an inner parallel flat-plate photobioreactor configuration (IPFP) was designed and the effect of inner-mixing ventilation and intermittent ventilation modes on the CO₂ fixation rate (CFR) in a laboratory-scale IPFP was determined. Chlorella vulgaris, a promising freshwater green algal strain with high CO₂ fixation rate under CO₂ concentration lower than 5% (v/v) but cannot survive under 15% CO₂, was used to perform the experiments. Results showed that both of the novel ventilation modes can effectively enhance microalgal performance on growth and carbon biofixation rates when 15% CO₂ was directly provided. The CFR of Chlorella vulgaris in this photobioreactor ranged 1.30 to 1.78 g CO₂L^-1d^-1. The pH value of cultural medium was also determined. Results showed that the distribution of pH values was uniform in the IPFP cross section during the inner-mixing ventilation mode, which indicating a good mixing characteristic of the fluid in the IPFP. In the intermittent ventilation mode, the pH values demonstrated periodical variation with the maximum value of 8.2 and the minimum value of 6.5. Aerating 15% CO₂ for 12 minutes and air for 48 min in one hour (12 min 15% CO₂/48 min air) provided a longer period in pH<7.0 than that of aerating 15% CO₂ for 6 minutes and air for 54 min in one hour (6 min 15% CO₂/54 min air), and thus, was more beneficial to the CFR. IPFP with an inner-mixing ventilation mode effectively enhances the performance of C. vulgaris on microalgal growth and CO₂ biofixation, indicating that this PBR has the potential for use in the field of carbon reduction.

Published in	Earth Sciences (Volume 7, Issue 6)
DOI	10.11648/j.earth.20180706.14
Page(s)	275-282
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2018. Published by Science Publishing Group

Keywords

Carbon Dioxide Biofixation, Chlorella vulgaris, Inner-mixing Ventilation, Intermittent Ventilation, Flat-plate Photobioreactor

References

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APA Style

Yongfu Li, Ruiqian Li, Haifang Fu, Ying Gao. (2018). Influence of Ventilation Modes on Carbon Dioxide Fixation of Chlorella vulgaris in a Flat-Plate Photobioreactor. Earth Sciences, 7(6), 275-282. https://doi.org/10.11648/j.earth.20180706.14

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ACS Style

Yongfu Li; Ruiqian Li; Haifang Fu; Ying Gao. Influence of Ventilation Modes on Carbon Dioxide Fixation of Chlorella vulgaris in a Flat-Plate Photobioreactor. Earth Sci. 2018, 7(6), 275-282. doi: 10.11648/j.earth.20180706.14

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AMA Style

Yongfu Li, Ruiqian Li, Haifang Fu, Ying Gao. Influence of Ventilation Modes on Carbon Dioxide Fixation of Chlorella vulgaris in a Flat-Plate Photobioreactor. Earth Sci. 2018;7(6):275-282. doi: 10.11648/j.earth.20180706.14

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@article{10.11648/j.earth.20180706.14,
  author = {Yongfu Li and Ruiqian Li and Haifang Fu and Ying Gao},
  title = {Influence of Ventilation Modes on Carbon Dioxide Fixation of Chlorella vulgaris in a Flat-Plate Photobioreactor},
  journal = {Earth Sciences},
  volume = {7},
  number = {6},
  pages = {275-282},
  doi = {10.11648/j.earth.20180706.14},
  url = {https://doi.org/10.11648/j.earth.20180706.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20180706.14},
  abstract = {Microalgae have the ability to mitigate CO2 emission with a high productivity, thereby having the potential for applications in reducing CO2 with high concentration. To date the effect of different ventilation modes in photobioreactor on the high level CO2 fixing capacity was still unclear. To explore an efficient, convenient and cheap aerating method for high concentration CO2, an inner parallel flat-plate photobioreactor configuration (IPFP) was designed and the effect of inner-mixing ventilation and intermittent ventilation modes on the CO2 fixation rate (CFR) in a laboratory-scale IPFP was determined. Chlorella vulgaris, a promising freshwater green algal strain with high CO2 fixation rate under CO2 concentration lower than 5% (v/v) but cannot survive under 15% CO2, was used to perform the experiments. Results showed that both of the novel ventilation modes can effectively enhance microalgal performance on growth and carbon biofixation rates when 15% CO2 was directly provided. The CFR of Chlorella vulgaris in this photobioreactor ranged 1.30 to 1.78 g CO2L-1d-1. The pH value of cultural medium was also determined. Results showed that the distribution of pH values was uniform in the IPFP cross section during the inner-mixing ventilation mode, which indicating a good mixing characteristic of the fluid in the IPFP. In the intermittent ventilation mode, the pH values demonstrated periodical variation with the maximum value of 8.2 and the minimum value of 6.5. Aerating 15% CO2 for 12 minutes and air for 48 min in one hour (12 min 15% CO2/48 min air) provided a longer period in pH2 for 6 minutes and air for 54 min in one hour (6 min 15% CO2/54 min air), and thus, was more beneficial to the CFR. IPFP with an inner-mixing ventilation mode effectively enhances the performance of C. vulgaris on microalgal growth and CO2 biofixation, indicating that this PBR has the potential for use in the field of carbon reduction.},
 year = {2018}
}

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TY  - JOUR
T1  - Influence of Ventilation Modes on Carbon Dioxide Fixation of Chlorella vulgaris in a Flat-Plate Photobioreactor
AU  - Yongfu Li
AU  - Ruiqian Li
AU  - Haifang Fu
AU  - Ying Gao
Y1  - 2018/12/11
PY  - 2018
N1  - https://doi.org/10.11648/j.earth.20180706.14
DO  - 10.11648/j.earth.20180706.14
T2  - Earth Sciences
JF  - Earth Sciences
JO  - Earth Sciences
SP  - 275
EP  - 282
PB  - Science Publishing Group
SN  - 2328-5982
UR  - https://doi.org/10.11648/j.earth.20180706.14
AB  - Microalgae have the ability to mitigate CO2 emission with a high productivity, thereby having the potential for applications in reducing CO2 with high concentration. To date the effect of different ventilation modes in photobioreactor on the high level CO2 fixing capacity was still unclear. To explore an efficient, convenient and cheap aerating method for high concentration CO2, an inner parallel flat-plate photobioreactor configuration (IPFP) was designed and the effect of inner-mixing ventilation and intermittent ventilation modes on the CO2 fixation rate (CFR) in a laboratory-scale IPFP was determined. Chlorella vulgaris, a promising freshwater green algal strain with high CO2 fixation rate under CO2 concentration lower than 5% (v/v) but cannot survive under 15% CO2, was used to perform the experiments. Results showed that both of the novel ventilation modes can effectively enhance microalgal performance on growth and carbon biofixation rates when 15% CO2 was directly provided. The CFR of Chlorella vulgaris in this photobioreactor ranged 1.30 to 1.78 g CO2L-1d-1. The pH value of cultural medium was also determined. Results showed that the distribution of pH values was uniform in the IPFP cross section during the inner-mixing ventilation mode, which indicating a good mixing characteristic of the fluid in the IPFP. In the intermittent ventilation mode, the pH values demonstrated periodical variation with the maximum value of 8.2 and the minimum value of 6.5. Aerating 15% CO2 for 12 minutes and air for 48 min in one hour (12 min 15% CO2/48 min air) provided a longer period in pH2 for 6 minutes and air for 54 min in one hour (6 min 15% CO2/54 min air), and thus, was more beneficial to the CFR. IPFP with an inner-mixing ventilation mode effectively enhances the performance of C. vulgaris on microalgal growth and CO2 biofixation, indicating that this PBR has the potential for use in the field of carbon reduction.
VL  - 7
IS  - 6
ER  -

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Author Information

Yongfu Li

Key Laboratory of Experimental Marine Biology, Chinese Academy of Sciences, Institute of Oceanology, National Laboratory for Marine Science and Technology, Qingdao, China
Ruiqian Li

School of International Affairs and public Administration, Ocean University of China, Qingdao, China
Haifang Fu

Zhonglu Environmental and Engineering Assessment Center of Shandong Province, Jinan, China
Ying Gao

Shandong Consultant Association of Ocean Engineering, Jinan, China

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Yongfu Li, Ruiqian Li, Haifang Fu, Ying Gao. (2018). Influence of Ventilation Modes on Carbon Dioxide Fixation of Chlorella vulgaris in a Flat-Plate Photobioreactor. Earth Sciences, 7(6), 275-282. https://doi.org/10.11648/j.earth.20180706.14

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ACS Style

Yongfu Li; Ruiqian Li; Haifang Fu; Ying Gao. Influence of Ventilation Modes on Carbon Dioxide Fixation of Chlorella vulgaris in a Flat-Plate Photobioreactor. Earth Sci. 2018, 7(6), 275-282. doi: 10.11648/j.earth.20180706.14

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AMA Style

Yongfu Li, Ruiqian Li, Haifang Fu, Ying Gao. Influence of Ventilation Modes on Carbon Dioxide Fixation of Chlorella vulgaris in a Flat-Plate Photobioreactor. Earth Sci. 2018;7(6):275-282. doi: 10.11648/j.earth.20180706.14

Copy | Download

@article{10.11648/j.earth.20180706.14,
  author = {Yongfu Li and Ruiqian Li and Haifang Fu and Ying Gao},
  title = {Influence of Ventilation Modes on Carbon Dioxide Fixation of Chlorella vulgaris in a Flat-Plate Photobioreactor},
  journal = {Earth Sciences},
  volume = {7},
  number = {6},
  pages = {275-282},
  doi = {10.11648/j.earth.20180706.14},
  url = {https://doi.org/10.11648/j.earth.20180706.14},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20180706.14},
  abstract = {Microalgae have the ability to mitigate CO2 emission with a high productivity, thereby having the potential for applications in reducing CO2 with high concentration. To date the effect of different ventilation modes in photobioreactor on the high level CO2 fixing capacity was still unclear. To explore an efficient, convenient and cheap aerating method for high concentration CO2, an inner parallel flat-plate photobioreactor configuration (IPFP) was designed and the effect of inner-mixing ventilation and intermittent ventilation modes on the CO2 fixation rate (CFR) in a laboratory-scale IPFP was determined. Chlorella vulgaris, a promising freshwater green algal strain with high CO2 fixation rate under CO2 concentration lower than 5% (v/v) but cannot survive under 15% CO2, was used to perform the experiments. Results showed that both of the novel ventilation modes can effectively enhance microalgal performance on growth and carbon biofixation rates when 15% CO2 was directly provided. The CFR of Chlorella vulgaris in this photobioreactor ranged 1.30 to 1.78 g CO2L-1d-1. The pH value of cultural medium was also determined. Results showed that the distribution of pH values was uniform in the IPFP cross section during the inner-mixing ventilation mode, which indicating a good mixing characteristic of the fluid in the IPFP. In the intermittent ventilation mode, the pH values demonstrated periodical variation with the maximum value of 8.2 and the minimum value of 6.5. Aerating 15% CO2 for 12 minutes and air for 48 min in one hour (12 min 15% CO2/48 min air) provided a longer period in pH2 for 6 minutes and air for 54 min in one hour (6 min 15% CO2/54 min air), and thus, was more beneficial to the CFR. IPFP with an inner-mixing ventilation mode effectively enhances the performance of C. vulgaris on microalgal growth and CO2 biofixation, indicating that this PBR has the potential for use in the field of carbon reduction.},
 year = {2018}
}

Copy | Download

TY  - JOUR
T1  - Influence of Ventilation Modes on Carbon Dioxide Fixation of Chlorella vulgaris in a Flat-Plate Photobioreactor
AU  - Yongfu Li
AU  - Ruiqian Li
AU  - Haifang Fu
AU  - Ying Gao
Y1  - 2018/12/11
PY  - 2018
N1  - https://doi.org/10.11648/j.earth.20180706.14
DO  - 10.11648/j.earth.20180706.14
T2  - Earth Sciences
JF  - Earth Sciences
JO  - Earth Sciences
SP  - 275
EP  - 282
PB  - Science Publishing Group
SN  - 2328-5982
UR  - https://doi.org/10.11648/j.earth.20180706.14
AB  - Microalgae have the ability to mitigate CO2 emission with a high productivity, thereby having the potential for applications in reducing CO2 with high concentration. To date the effect of different ventilation modes in photobioreactor on the high level CO2 fixing capacity was still unclear. To explore an efficient, convenient and cheap aerating method for high concentration CO2, an inner parallel flat-plate photobioreactor configuration (IPFP) was designed and the effect of inner-mixing ventilation and intermittent ventilation modes on the CO2 fixation rate (CFR) in a laboratory-scale IPFP was determined. Chlorella vulgaris, a promising freshwater green algal strain with high CO2 fixation rate under CO2 concentration lower than 5% (v/v) but cannot survive under 15% CO2, was used to perform the experiments. Results showed that both of the novel ventilation modes can effectively enhance microalgal performance on growth and carbon biofixation rates when 15% CO2 was directly provided. The CFR of Chlorella vulgaris in this photobioreactor ranged 1.30 to 1.78 g CO2L-1d-1. The pH value of cultural medium was also determined. Results showed that the distribution of pH values was uniform in the IPFP cross section during the inner-mixing ventilation mode, which indicating a good mixing characteristic of the fluid in the IPFP. In the intermittent ventilation mode, the pH values demonstrated periodical variation with the maximum value of 8.2 and the minimum value of 6.5. Aerating 15% CO2 for 12 minutes and air for 48 min in one hour (12 min 15% CO2/48 min air) provided a longer period in pH2 for 6 minutes and air for 54 min in one hour (6 min 15% CO2/54 min air), and thus, was more beneficial to the CFR. IPFP with an inner-mixing ventilation mode effectively enhances the performance of C. vulgaris on microalgal growth and CO2 biofixation, indicating that this PBR has the potential for use in the field of carbon reduction.
VL  - 7
IS  - 6
ER  -

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