Skip to Main Content
 

Global Search Box

 
 
 

ETD Abstract Container

Abstract Header

The Impact of Raceway Mixing and Light Penetration on Algal Growth

Thanapisudwong, Thatchai
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1479910640426105

Abstract Details

2016, Master of Science (MS), Ohio University, Civil Engineering (Engineering and Technology).
Raceway ponds for microalgae are broadly used in cultivating microalgae for high production because of their effectiveness and cost savings. One of the challenging factors of microalgae growth is how to optimize the impact of mixing during cultivation. The effects of light characteristics, LED, and fluorescence, are also significant for growing microalgae. Mixing paddlewheel speeds were investigated using speeds at 11 rpm, 13 rpm, and 15 rpm. Maximum algae concentrations and growth rates were higher with higher rpm. Shear calculations showed that these mixing rates were not high enough to injure cells. Maximum velocities in raceways varied from 16.5 to 41.8 cm/s, adequate for mixing. LED lights were more effective than fluorescent likely due to higher intensity and better radiation spectra. Growth nearly stopped after six days due to high turbidities that greatly diminished light penetration. A CFD model matched measured velocities well and showed eddy problems were more severe at lower mixing rates.
Guy Riefler, R. (Advisor)
Shad Sargand (Committee Chair)
Sarah Davis (Committee Member)
Ben Sperry (Committee Member)
112 p.
Civil Engineering
Raceway pond; Microalgae; Paddle Wheel; Light Intensity; Growth Rate; CFD

Recommended Citations

Citations

  • Thanapisudwong, T. (2016). The Impact of Raceway Mixing and Light Penetration on Algal Growth [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1479910640426105

    APA Style (7th edition)

  • Thanapisudwong, Thatchai. The Impact of Raceway Mixing and Light Penetration on Algal Growth. 2016. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1479910640426105.

    MLA Style (8th edition)

  • Thanapisudwong, Thatchai. "The Impact of Raceway Mixing and Light Penetration on Algal Growth." Master's thesis, Ohio University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1479910640426105

    Chicago Manual of Style (17th edition)

ohiou1479910640426105
2,411
© 2016, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.