Biomass and pigments production in photosynthetic bacteria wastewater treatment: Effects of photoperiod
Abstract
This study aimed at enhancing the bacterial biomass and pigments production in together with pollution removal in photosynthetic bacteria (PSB) wastewater treatment via using different photoperiods. Different light/dark cycles and light/dark cycle frequencies were examined. Results showed that PSB had the highest biomass production, COD removal and biomass yield, and light energy efficiency with light/dark cycle of 2h/1h. The corresponding biomass, COD removal and biomass yield reached 2068mg/L, 90.3%, and 0.38mg-biomass/mg-COD-removal, respectively. PSB showed higher biomass production and biomass yield with higher light/dark cycle frequency. Mechanism analysis showed within a light/dark cycle from 1h/2h to 2h/1h, the carotenoid and bacteriochlorophyll production increased with an increase in light/dark cycle. Moreover, the pigment contents were much higher with lower frequency of 2-4 times/d.
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The use of wastewater as the culture medium for microalgae may reduce the use of commercial fertilizers and at the same time minimize freshwater consumption.
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- Authors
- Zhou, Q., Zhang, P., Zhang, G., & Peng, M.
- Affiliations
- Renmin University of China (CN)
- Beijing Forestry University (CN)
- Corresponding author
- Zhang, Guangming
- Venue
- Bioresource Technology
- Publisher
- Elsevier BV
- Published
- 2015-08
- Volume
- 190
- Pages
- 196-200
- ISSN
- 0960-8524 (ISSN-L)
- OpenAlex
- W2035483250
- Cited by
- 74
- References
- 24
- Citations by year
- 2026: 1 · 2025: 9 · 2024: 6 · 2023: 6 · 2022: 10 · 2021: 8 · 2020: 6 · 2019: 9 · 2018: 12 · 2017: 4 · 2016: 2 · 2015: 1
- FWCI
- 1.88
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Bioresource Technology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Natural Science Foundation of China (51278489, 5117804)
- Topics
- Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
- Physical Sciences › Environmental Science › Pollution › Wastewater Treatment and Nitrogen Removal
- Physical Sciences › Environmental Science › Waste Management and Disposal › Wastewater Treatment and Reuse
- Keywords
- photosynthetic bacteria, wastewater treatment, photoperiod, light-dark cycle, bacterial production, carotenoids, bacteriochlorophyll, COD removal, biomass yield, pigment production
- MeSH terms
- Light, Photosynthesis, Pigments, Biological, Radiation Dosage, Rhodopseudomonas, Water Pollutants, Chemical, Photoperiod, Water Purification, Cell Proliferation, Photobioreactors, Wastewater
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