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  • Treatment and re-use of raw blackwater by Chlorella vulgaris-based system [Elektronski vir]
    Segovia Bifarini, Marco Antonio ...
    In this study, we examined a Chlorella vulgaris-based system as a potential solution to change liquid waste, such as blackwater, into valuable products for agriculture while protecting waters from ... pollution without technical demanding pre-treatment. To evaluate the possibility of nutrient removal and biomass production from raw blackwater, four blackwater dilutions were tested at lab-scale: 50%, 30%, 20%, and 10%. The results showed that even the less diluted raw blackwater was a suitable growth medium for microalgae C. vulgaris. As expected, the optimum conditions were observed in 10% blackwater with the highest growth rate (0.265 d%1) and a nutrient removal efficiency of 99.6% for ammonium and 33.7% for phosphate. However, the highest biomass productivity (5.581 mg chlorophyll-a L%1 d%1) and total biomass (332.82 mg dry weight L%1) were achieved in 50% blackwater together with the highest chemical oxygen demand removal (81%) as a result of the highest nutrient content and thus prolonged growth phase. The results suggested that the dilution factor of 0.5 followed by microalgae cultivation with a hydraulic retention time of 14 days could offer the highest biomass production for the potential use in agriculture and, in parallel, a way to treat raw blackwater from source-separation sanitation systems.
    Vir: Water [Elektronski vir]. - ISSN 2073-4441 (Letn. 12, št. 10, 2020, str. 1-17)
    Vrsta gradiva - e-članek
    Leto - 2020
    Jezik - angleški
    COBISS.SI-ID - 30855683

    Povezava(-e):

    https://doi.org/10.3390/w12102660
    https://www.mdpi.com/2073-4441/12/10/2660
    Repozitorij Univerze v Ljubljani – RUL
    DOI

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