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Article Abstract
Scenedesmus obliquus (ACOI 204/07) microalgae were cultivated in cattle wastewater in vertical alveolar flat panel photobioreactors, operated in batch and continuous mode, after previous digestion in a hybrid anaerobic reactor. In batch operation, removal efficiencies ranges of 65 to 70% of COD, 98 to 99% of NH and 69 to 77.5% of PO after 12days were recorded. The corresponding figures for continuous flow were from 57 to 61% of COD, 94 to 96% of NH and 65 to 70% of PO with mean hidraulic retention time of 12days. Higher rates of CO fixation (327-547mgLd) and higher biomass volumetric productivity (213-358mgLd) were obtained in batch mode. This microalgae-mediated process can be considered promising for bioremediation and valorization of effluents produced by cattle breeding yielding a protein-rich microalgal biomass that could be eventually used as cattle feed.
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| http://dx.doi.org/10.1016/j.scitotenv.2018.03.157 | DOI Listing |
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