Cited by 25Algal biology and biofuel productionWastewater Treatment and ReuseConstructed Wetlands for Wastewater Treatment

Acclimated Green Microalgae Consortium to Treat Sewage in an Alternative Urban WWTP in a Coastal Area of Central Italy

Open access
Chieti, M.G., Petrucciani, A., Mollo, L., Gerotto, C., Eusebi, A.L., Fatone, F., Norici, A., González-Camejo, J.·2024·Science of The Total Environment

Abstract

This study exposed a microalgal consortium formed by Auxenochlorella protothecoides, Tetradesmus obliquus, and Chlamydomonas reinhardtii to six mixed wastewater media containing different proportions of primary (P) or secondary (S) effluents diluted in centrate (C). Algae could grow at centrate concentrations up to 50 %, showing no significant differences between effluents. After acclimation, microalgae cultivated in 50%P-50%C and 50%S-50%C grew at a rate similar to that of control cultures (0.59–0.66 d−1). These results suggest that the consortium acclimated to both sewage streams by modulating the proportion of the species and their metabolism. Acclimation also altered the photosynthetic activity of wastewater-grown samples compared to the control, probably due to partial photoinhibition, changes in consortium composition, and changes in metabolic activity. No major differences were observed between the two streams with respect to biochemical composition, biomass yield, or bioremediation capacity of the cultivated algae but algae grown in the secondary effluent showed qualitatively higher exopolysaccharides (EPS) production than algae grown in primary. Regarding wastewater remediation, microalgae grown in both WW media showed proficient nutrient removal efficiencies (close to 100 %); however, the final pH value (close to 11) would be controversial if the system were upscaled as it is over the legal limit and would cause phosphorus precipitation, so that CO2 addition would be required. The theoretical scale-up of the microalgae system could achieve water treatment costs of 0.109 €·m−3, which was significantly lower than the costs of typical activated sludge systems.

Integrity signals

Registry

Crossref · 10.1016/j.scitotenv.2024.174056

Cites

105 of 105 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Authors
Chieti, M. G., Petrucciani, A., Mollo, L., Gerotto, C., Eusebi, A. L., Fatone, F., Norici, A., & González-Camejo, J.
Affiliations
Marche Polytechnic University (IT)
Corresponding author
Petrucciani, A.
Venue
Science of The Total Environment
Publisher
Elsevier BV
Published
2024-10
Volume
945
Pages
174056
ISSN
0048-9697 (ISSN-L)
OpenAlex
W4399787295
Cited by
25
References
105
Citations by year
2026: 6 · 2025: 17 · 2024: 2
FWCI
1.66
Type
journal article
Language
en
Open access
Locations
  • The Science of The Total Environment (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Università Politecnica delle Marche (Università Politecnica delle Marche) (submittedVersion, cc-by)
Funders
Horizon 2020 MSCA
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 › Waste Management and Disposal › Constructed Wetlands for Wastewater Treatment
Keywords
microalgae consortium, wastewater treatment, Auxenochlorella protothecoides, Scenedesmus obliquus, Chlamydomonas reinhardtii, primary effluent, secondary effluent, photoinhibition, exopolysaccharide production, nutrient removal, algae-based wastewater treatment, scale-up
MeSH terms
Chlorophyta, Biodegradation, Environmental, Italy, Sewage, Waste Disposal, Fluid, Microalgae, Wastewater

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review