Student Work

Denitrification of Wastewater Using Cyanobacterial-Algal Mats with Sodium Bicarbonate

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This project examined the efficacy of solid sodium bicarbonate as a low-cost, viable substitute for carbon dioxide gas in small- scale cyanobacterial-algal (microbial) mat agricultural wastewater treatment.\nExperimentation over 35 days with nitrate-rich wastewater resulted in removal efficiency rates up to 37.2% of NO3 for microbial mats treated with solid sodium bicarbonate. Reaction rate modeling determined a rate constant of 0.0166/day and Excel modeling determined a projected hydraulic residence time with increased microbial mat area for an estimated 75% removal. Recommendations include further long-term experimentation and suggestions for an initial prototype design.

  • This report represents the work of one or more WPI undergraduate students submitted to the faculty as evidence of completion of a degree requirement. WPI routinely publishes these reports on its website without editorial or peer review.
Creator
Publisher
Identifier
  • E-project-042619-085127
Advisor
Year
  • 2019
Sponsor
Date created
  • 2019-04-26
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Major
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Last modified
  • 2021-01-29

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Permanent link to this page: https://digital.wpi.edu/show/0g354j09f