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- Title
A Microalgae Photobioreactor System for Indoor Air Remediation: Empirical Examination of the CO 2 Absorption Performance of Spirulina maxima in a NaHCO 3 -Reduced Medium.
- Authors
Han, Myungho; Park, Jinsuck; Kim, Inhan; Yi, Hwang
- Abstract
Microalgae-based photobioreactors (PBRs) have gained attention as a sustainable solution for indoor air quality (IAQ) control. This study investigates indoor CO2 absorption performance of Spirulina maxima (S. maxima) in NaHCO3-limited cultivation (standard: NaHCO3-free medium = 1:1 v/v%) of a lab-scale PBR system. Cultivation performance of three medium amendments (standard, 50% NaHCO3, and NaHCO3-free) was compared by observing cell growth for 30 days in a controlled environment. Empirical examinations were conducted to evaluate the algal CO2 uptake, and overall system performance in the culture volumes of 2, 4, and 7 L and natural indoor CO2 concentration of ~1100 ppm. We found CO2 was reduced by ~55%, in an air chamber of 0.064 m3, showing the greatest mitigation rate (~20%) on Day 4. Under a high concentration of CO2 (10,000 ppm), the CO2 levels were decreased up to ~90% before saturation. This research provides valuable insights into the development of S. maxima-activated IAQ control systems for airtight buildings.
- Subjects
SPIRULINA; INDOOR air quality; CARBON dioxide; MICROALGAE; HOUSE plants; ABSORPTION; ALGAL growth; SCENEDESMUS
- Publication
Applied Sciences (2076-3417), 2023, Vol 13, Issue 24, p12991
- ISSN
2076-3417
- Publication type
Article
- DOI
10.3390/app132412991