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Interference of model wastewater components with flocculation of Chlorella sorokiniana induced by calcium phosphate precipitates

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    SYSNO ASEP0504018
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JČlánek ve WOS
    TitleInterference of model wastewater components with flocculation of Chlorella sorokiniana induced by calcium phosphate precipitates
    Author(s) Leite, LS. (BR)
    Daniel, LA. (BR)
    Pivokonský, Martin (UH-J) SAI, ORCID, RID
    Novotná, Kateřina (UH-J) SAI, ORCID, RID
    Brányiková, Irena (UCHP-M) RID, ORCID, SAI
    Brányik, T. (CZ)
    Article number121352
    Source TitleBioresource Technology. - : Elsevier - ISSN 0960-8524
    Roč. 286, August (2019)
    Number of pages7 s.
    Publication formPrint - P
    Languageeng - English
    CountryNL - Netherlands
    Keywordsalkaline flocculation ; Chlorella sorokiniana ; wastewater ; interfering compounds
    Subject RIVDJ - Water Pollution ; Quality
    OBOR OECDEnvironmental sciences (social aspects to be 5.7)
    Subject RIV - cooperationInstitute of Chemical Process Fundamentals - Industrial Chemistry, Chemical Engineering
    R&D ProjectsGA18-05007S GA ČR - Czech Science Foundation (CSF)
    Způsob publikováníOmezený přístup
    Institutional supportUH-J - RVO:67985874 ; UCHP-M - RVO:67985858
    UT WOS000468297700001
    EID SCOPUS85064662961
    DOI10.1016/j.biortech.2019.121352
    AnnotationAmongst harvesting processes, alkaline flocculation stands out as a technically feasible and low cost method. The interference of model wastewater components with alkaline flocculation of Chlorella sorokiniana (pH 8-12), induced by calcium phosphate (CaP) precipitates, was evaluated. Between the compounds tested, inorganic nitrogen, sodium alginate, salinity and algal organic matter had no effect on flocculation efficiency (FE). The negative effect of humic acids, sodium dodecyl sulphate and alkalinity on FE was partial. Bovine serum albumin and bacterial organic matter (BOM) of Escherichia coli showed the strongest disruption of FE. The impact of BOM can be explained by the high protein content (65% of total organic carbon). Proteins, negatively charged at alkaline pH, interrupt microalgae flocculation by preferentially interacting with positively charged CaP precipitates. The simultaneous effects of multiple substances were tested to simulate real wastewater. The results confirm the need to investigate the composition of wastewater prior to alkaline flocculation.
    WorkplaceInstitute of Hydrodynamics
    ContactSoňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
    Year of Publishing2020
    Electronic addresshttps://www.sciencedirect.com/science/article/pii/S0960852419305747?via%3Dihub
Number of the records: 1