Effects of water recirculation on microalgae assemblage and corresponding sustainability of the photobioreactor cultivation system
Abstract
An algae photobioreactor (APB) was used to determine the effect of water recirculation on the growth of algal assemblage. CO2 in the flue gas from a power plant was the carbon source. Boiler water was used as the source water. The results showed that microalgae cultivation under recirculation conditions was stable over a period of four months. Biomass productivities during the 1st through 4th months of recirculation (0.26, 0.23, 0.20, and 0.18 g L–1 d–1, respectively) were not significantly different than freshwater (0.22 g L –1 d –1). Furthermore, the relationship between eukaryotic and bacterial domains in the assemblage remained consistent throughout the four months of recirculation (80.7, 87.1, 83.1, and 82.1%, respectively, and 19.2, 12.8, 16.9, and 17.8%, respectively). This was not significantly different than the abundance of each domain in the control freshwater cultivation (83.7% eukaryotic and 16.2% bacterial). A 1 m3 photobioreactor was then envisioned for a mass, energy, and exergy analysis to evaluate the water recirculation on sustainability of the culture system. The mass balance analysis concluded that 98% reduction in water usage, 25% reduction in nitrogen, and 12.5% reduction in phosphorus could be achieved during cultivation operating under recirculation for one year, while maintaining biomassmore »
- Authors:
-
- Michigan State University, East Lansing, MI (United States)
- Publication Date:
- Research Org.:
- Michigan State Univ., East Lansing, MI (United States)
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE)
- OSTI Identifier:
- 1986449
- Alternate Identifier(s):
- OSTI ID: 1839125; OSTI ID: 1976889
- Grant/Contract Number:
- FE0030977
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Biomass and Bioenergy
- Additional Journal Information:
- Journal Volume: 157; Journal ID: ISSN 0961-9534
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; Chlorella sorokiniana; CO2 capture; Exergy analysis; Microbial community; Algae photobioreactor; chlorella sorokiniana; exergy analysis; microbial community; algae photobioreactor
Citation Formats
Daiek, Carly, Liao, Wei, and Liu, Yan. Effects of water recirculation on microalgae assemblage and corresponding sustainability of the photobioreactor cultivation system. United States: N. p., 2022.
Web. doi:10.1016/j.biombioe.2021.106326.
Daiek, Carly, Liao, Wei, & Liu, Yan. Effects of water recirculation on microalgae assemblage and corresponding sustainability of the photobioreactor cultivation system. United States. https://doi.org/10.1016/j.biombioe.2021.106326
Daiek, Carly, Liao, Wei, and Liu, Yan. Thu .
"Effects of water recirculation on microalgae assemblage and corresponding sustainability of the photobioreactor cultivation system". United States. https://doi.org/10.1016/j.biombioe.2021.106326. https://www.osti.gov/servlets/purl/1986449.
@article{osti_1986449,
title = {Effects of water recirculation on microalgae assemblage and corresponding sustainability of the photobioreactor cultivation system},
author = {Daiek, Carly and Liao, Wei and Liu, Yan},
abstractNote = {An algae photobioreactor (APB) was used to determine the effect of water recirculation on the growth of algal assemblage. CO2 in the flue gas from a power plant was the carbon source. Boiler water was used as the source water. The results showed that microalgae cultivation under recirculation conditions was stable over a period of four months. Biomass productivities during the 1st through 4th months of recirculation (0.26, 0.23, 0.20, and 0.18 g L–1 d–1, respectively) were not significantly different than freshwater (0.22 g L –1 d –1). Furthermore, the relationship between eukaryotic and bacterial domains in the assemblage remained consistent throughout the four months of recirculation (80.7, 87.1, 83.1, and 82.1%, respectively, and 19.2, 12.8, 16.9, and 17.8%, respectively). This was not significantly different than the abundance of each domain in the control freshwater cultivation (83.7% eukaryotic and 16.2% bacterial). A 1 m3 photobioreactor was then envisioned for a mass, energy, and exergy analysis to evaluate the water recirculation on sustainability of the culture system. The mass balance analysis concluded that 98% reduction in water usage, 25% reduction in nitrogen, and 12.5% reduction in phosphorus could be achieved during cultivation operating under recirculation for one year, while maintaining biomass productivity of 1.2 kg wet algal biomass and sequestration of 0.4 kg CO2 per day. Furthermore, the exergy balance analysis concluded that without considering solar irradiation, the culture with water recirculation greatly enhanced the rational exergy efficiency, which represents a more sustainable cultivation system for CO2 capture and utilization.},
doi = {10.1016/j.biombioe.2021.106326},
journal = {Biomass and Bioenergy},
number = ,
volume = 157,
place = {United States},
year = {Thu Jan 06 00:00:00 EST 2022},
month = {Thu Jan 06 00:00:00 EST 2022}
}
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