Cited by 49Algal biology and biofuel productionWastewater Treatment and ReuseAquatic Ecosystems and Phytoplankton Dynamics

Evaluation of Microalgae as Bioremediation Agent for Poultry Effluent and Biostimulant for Germination

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Viegas, Catarina, Gouveia, Luísa, Gonçalves, Margarida·2021·Environmental Technology & Innovation

Abstract

This work addresses how a pre-treatment involving biomass ash influences the poultry effluent’s bioremediation using three microalga strains, such as Chlorella vulgaris, Chlorella protothecoides and Tetradesmus obliquus. The undiluted effluent served as the culture medium for the growth, both in batch and semi continuous modes, and the remediation efficiency and biomass production yield were quantified. The combination strategy in batch mode, allowed removal efficiency of 100% for total nitrogen, more than 80% for total phosphorus and over 70% for chemical oxygen demand. Average biomass productivities for 10 days of 94.9, 76.2 and 72.0 mg L−1 day−1 were obtained for T. obliquus, C. vulgaris and C. protothecoides, respectively. Regarding semi-continuous strategy (28 days), the biomass productivities achieved were 245 and 194 mg L−1 day−1 for T. obliquus and C. vulgaris, respectively. Remediation rates of 100% for total nitrogen and phosphorus, and over 92% for COD were attained. The microalga composition was assessed for protein, sugar, lipid, and ash contents. The produced biomasses were tested as biostimulant and showed a 147% increase in wheat germination index, for the C. vulgaris microalga. The use of the precipitate from the biomass ash pre-treatment as fertilizer in germination tests was also assessed and results in an increase of 26%, for 10% of precipitate incorporation.

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Crossref · 10.1016/j.eti.2021.102048

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  • The produced biomass from poultry effluent remediation, tested as a biostimulant, showed a 147% increase in wheat germination index.

    “The produced biomass was tested as a biostimulant and showed a 147% increase in wheat germination index.”
  • The remediation rates were 100% for total nitrogen and phosphorus, and over 92% for chemical oxygen demand (COD) when microalgae including C. vulgaris and C. protothecoides grew in undiluted poultry effluent in semi-continuous mode.

    “The remediation rates were 100% for total nitrogen and phosphorus, and over 92% for chemical oxygen demand (COD).”

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Authors
Viegas, C., Gouveia, L., & Gonçalves, M.
Affiliations
  • Universidade Nova de Lisboa (PT)
  • National Laboratory of Energy and Geology (PT)
Corresponding author
Viegas, Catarina
Venue
Environmental Technology & Innovation
Publisher
Elsevier BV
Published
2021-11
Volume
24
Pages
102048
ISSN
2352-1864 (ISSN-L)
OpenAlex
W3209541118
Cited by
49
References
48
Citations by year
2026: 7 · 2025: 18 · 2024: 9 · 2023: 12 · 2022: 3
FWCI
1.13
Type
journal article
Language
en
Open access
Locations
  • Environmental Technology & Innovation (publishedVersion, cc-by)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, other-oa)
  • Portuguese National Funding Agency for Science, Research and Technology (RCAAP Project by FCT) (submittedVersion, cc-by)
Funders
Fundação para a Ciência e a Tecnologia (Lisboa-01-0247-FEDER-035234, SFRH/BD/131178/2017)
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
microalgae, bioremediation, Chlorella vulgaris, Chlorella protothecoides, Scenedesmus obliquus, nitrogen removal, phosphorus removal, chemical oxygen demand, microalgae productivity, semi-continuous cultivation, biostimulants, wheat seed germination, microalgal biomass composition, fertilizers

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