Cited by 828Algal biology and biofuel productionWastewater Treatment and ReuseAquatic Ecosystems and Phytoplankton Dynamics

Integrating micro-algae into wastewater treatment: a review

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Mohsenpour, Seyedeh Fatemeh, Hennige, Sebastian, Willoughby, Nicholas, Adeloye, Adebayo, Gutierrez, Tony·2021·Science of The Total Environment

Abstract

Improving the ecological status of water sources is a growing focus for many developed and developing nations, in particular with reducing nitrogen and phosphorus in wastewater effluent. In recent years, mixotrophic micro-algae have received increased interest in implementing them as part of wastewater treatment. This is based on their ability to utilise organic and inorganic carbon, as well as inorganic nitrogen (N) and phosphorous (P) in wastewater for their growth, with the desired results of a reduction in the concentration of these substances in the water. The aim of this review is to provide a critical account of micro-algae as an important step in wastewater treatment for enhancing the reduction of N, P and the chemical oxygen demand (COD) in wastewater, whilst utilising a fraction of the energy demand of conventional biological treatment systems. Here, we begin with an overview of the various steps in the treatment process, followed by a review of the cellular and metabolic mechanisms that micro-algae use to reduce N, P and COD of wastewater with identification of when the process may potentially be most effective. We also describe the various abiotic and biotic factors influencing micro-algae wastewater treatment, together with a review of bioreactor configuration and design. Furthermore, a detailed overview is provided of the current state-of-the-art in the use of micro-algae in wastewater treatment.

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Crossref · 10.1016/j.scitotenv.2020.142168

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Research works printed but not linked: 4

  1. Larsdotter, K., 2006. Wastewater treatment with microalgae -a literature review. Vatten. 62, 31-38.
  2. Lee, Y., Chisti, Y., Pruvost, J., Duana, D., Zeng, X., Guldhe, A., Louw, T., Ellis, J., Alwi, D., Dubini, A., Uggetti, E., Packer, M., Rawat, I., Griffths, M., Rhodes, L., Gan, Y., 2016. Algae Biotechnology. 1st ed. Springer International Publishing, Switzerland.
  3. Richmond, A., 2003. Handbook of Microalgal Culture. Blackwell Publishing Ltd, Oxford, UK.
  4. Voet, D., Voet, J., 2011. Biochemistry. 4th ed. John Wiley & Sons, New Jersey, USA.

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Authors
Mohsenpour, S. F., Hennige, S., Willoughby, N., Adeloye, A., & Gutierrez, T.
Affiliations
  • Heriot-Watt University (GB)
  • University of Edinburgh (GB)
Venue
Science of The Total Environment
Publisher
Elsevier BV
Published
2021-01
Volume
752
Pages
142168
ISSN
0048-9697 (ISSN-L)
OpenAlex
W3082865927
Cited by
828
References
271
Citations by year
2026: 106 · 2025: 139 · 2024: 180 · 2023: 127 · 2022: 183 · 2021: 88 · 2020: 4
FWCI
4.61
Type
journal article
Language
en
Open access
Locations
  • The Science of The Total Environment (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, cc-by)
Funders
  • Heriot-Watt University
  • Natural Environment Research Council
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Algal biology and biofuel production
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Wastewater Treatment and Reuse
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
Keywords
wastewater treatment, mixotrophic cultivation, nitrogen removal, phosphorus removal, COD removal, bioreactor design, energy demand reduction, algal wastewater treatment
MeSH terms
Nitrogen, Phosphorus, Waste Disposal, Fluid, Bioreactors, Biological Oxygen Demand Analysis, Microalgae, Wastewater

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