IDEAS home Printed from https://ideas.repec.org/a/gam/jsusta/v16y2024i20p9001-d1500990.html
   My bibliography  Save this article

Enhanced Production of Microalgal Metabolites Through Aeration Coupled with Stirring

Author

Listed:
  • Yangyingdong Wu

    (Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China)

  • Yuqing He

    (Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China)

  • Tuo Zhao

    (Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China)

  • Yang Zhao

    (Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China)

  • Ze Yu

    (Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China)

  • Haiyan Pei

    (Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China
    Shandong Provincial Engineering Center on Environmental Science and Technology, Jinan 250061, China)

Abstract

Adequate mixing is a key factor for microalgal cultivation to achieve high biomass production, so it is essential to clarify the comparative effects of different mixing methods on microalgal productivity, which has rarely been studied previously. This work therefore aimed to investigate the effects of different mixing methods (stirring, aeration, and aeration coupled with stirring) on the growth and metabolite composition of Chlorella sorokiniana SDEC-18, a strain with potential for large-scale application. The results showed that mixing was beneficial for carbohydrate accumulation, while dual mixing (aeration coupled with stirring) promoted growth and achieved the highest dry mass and metabolite productivities (including carbohydrates, proteins, and lipids) through enhancement of light energy capture in the entire system. The stirring speed in the dual mixing approach of aeration coupled with stirring was also considered: the optimal condition was found to be 800 rpm. The maximum biomass was 3.56 g L −1 , and the carbohydrate productivity was as high as 119.45 mg L −1 d −1 , which was the highest metabolite productivity (higher than proteins or lipids), obtained from aeration coupled with stirring at 800 rpm. Our study suggests that aeration coupled with stirring provides a feasible strategy for microalgal production, due to the optimal availability of CO 2 and light achieved through effective mixing.

Suggested Citation

  • Yangyingdong Wu & Yuqing He & Tuo Zhao & Yang Zhao & Ze Yu & Haiyan Pei, 2024. "Enhanced Production of Microalgal Metabolites Through Aeration Coupled with Stirring," Sustainability, MDPI, vol. 16(20), pages 1-14, October.
  • Handle: RePEc:gam:jsusta:v:16:y:2024:i:20:p:9001-:d:1500990
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/2071-1050/16/20/9001/pdf
    Download Restriction: no

    File URL: https://www.mdpi.com/2071-1050/16/20/9001/
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. Wang, Yunbo & Xu, Haiqing & Yang, Jinzhi & Zhou, Yan & Wang, Xu & Dou, Shijuan & Li, Liyun & Liu, Guozhen & Yang, Ming, 2022. "Effect of sulfur limitation strategies on glucose-based carbohydrate production from Chlorella sorokiniana," Renewable Energy, Elsevier, vol. 200(C), pages 449-456.
    2. Liu, Mingyan & Yu, Ze & Jiang, Liqun & Hou, Qingjie & Xie, Zhen & Ma, Meng & Yu, Siteng & Pei, Haiyan, 2021. "Monosodium glutamate wastewater assisted seawater to increase lipid productivity in single-celled algae," Renewable Energy, Elsevier, vol. 179(C), pages 1793-1802.
    Full references (including those not matched with items on IDEAS)

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.

      Corrections

      All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jsusta:v:16:y:2024:i:20:p:9001-:d:1500990. See general information about how to correct material in RePEc.

      If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

      If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

      If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

      For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

      Please note that corrections may take a couple of weeks to filter through the various RePEc services.

      IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.