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Alkaline flocculation of Microcystis aeruginosa induced by calcium and magnesium precipitates.

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    SYSNO ASEP0520964
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevAlkaline flocculation of Microcystis aeruginosa induced by calcium and magnesium precipitates.
    Tvůrce(i) Potočár, T. (CZ)
    Pereira, J.A.V. (CZ)
    Brányiková, Irena (UCHP-M) RID, ORCID, SAI
    Barešová, Magdalena (UH-J) RID, ORCID, SAI
    Pivokonský, Martin (UH-J) SAI, ORCID, RID
    Brányik, T. (CZ)
    Zdroj.dok.Journal of Applied Phycology - ISSN 0921-8971
    Roč. 32, č. 1 (2020), s. 329-337
    Poč.str.9 s.
    Jazyk dok.eng - angličtina
    Země vyd.NL - Nizozemsko
    Klíč. slovacyanobacteria ; inorganic precipitates ; surface interactions ; DLVO theory
    Vědní obor RIVEI - Biotechnologie a bionika
    Obor OECDIndustrial biotechnology
    Vědní obor RIV – spolupráceÚstav pro hydrodynamiku - Znečištění a kontrola vody
    CEPGA18-05007S GA ČR - Grantová agentura ČR
    Způsob publikováníOmezený přístup
    Institucionální podporaUCHP-M - RVO:67985858 ; UH-J - RVO:67985874
    UT WOS000521187500028
    EID SCOPUS85075596156
    DOI10.1007/s10811-019-01941-3
    AnotaceThe biotechnological potential of Microcystis aeruginosa brings requirements for efficient cultivation and harvesting of biomass. Flocculation of M. aeruginosa at alkaline pH induced by calcium or magnesium precipitates was studied under model conditions, in culture medium with/without cellular organic matter (COM). The effect of independent variables (Ca2+, Mg2+, PO43−, and pH) on the zeta potential and turbidity of cells and inorganic precipitates was quantified by response surface methodology. The experimentally obtained flocculation efficiencies (FEs) were compared with predictions of physicochemical interaction (DLVO) models. The results presented here delimited the concentration ranges of Ca2+, Mg2+, PO43−, and pH, resulting in FE > 85%. The DLVO prediction model suggested that for high FE, positively charged precipitates and sufficient precipitate turbidity were required. At pH 10, alkaline flocculation was more advantageous using magnesium precipitates, since it required less phosphate. High FE with COM was achieved at pH 12 when precipitate formation was induced at a low phosphate concentration by the addition of magnesium hydroxide.
    PracovištěÚstav chemických procesů
    KontaktEva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
    Rok sběru2021
    Elektronická adresahttp://hdl.handle.net/11104/0305633
Počet záznamů: 1