Abstract
Laboratory experiments were performed to study the growth rate and phosphorus (P) and nitrogen (N) uptakes of eight benthic microalgae species isolated from different sources of pig manure. Cells immobilized in calcium alginate beads were cultured with three replicates for each species. P removal rates obtained for the unicellular self-aggregating benthic species (Palmellopsis gelatinosa, Chlorosarcinopsis sp., and Macrochloris sp.) were markedly higher than those obtained in previous published experiments. N removal rates were highest for Macrochloris sp., Chlorosarcinopsis sp., and Euglena sp. 2 and comparable to the maximum rates obtained by other authors. Our results show an excellent efficiency of autochthonous benthic species for nutrient removal, especially for P, and call attention to their use for wastewater treatment.
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The authors are grateful to Richard Davies for assistance with the English version and to PROINSERGA S.A. for financial support and facilities to carry out this project.
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Pérez-Martínez, C., Sánchez-Castillo, P. & Jiménez-Pérez, M.V. Utilization of immobilized benthic algal species for N and P removal. J Appl Phycol 22, 277–282 (2010). https://doi.org/10.1007/s10811-009-9456-3
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DOI: https://doi.org/10.1007/s10811-009-9456-3