Alkaline flocculation of Microcystis aeruginosa induced by calcium and magnesium precipitates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F19%3A43918505" target="_blank" >RIV/60461373:22330/19:43918505 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/20:00520964 RIV/67985874:_____/20:00520964

Výsledek na webu

<a href="https://link.springer.com/article/10.1007%2Fs10811-019-01941-3" target="_blank" >https://link.springer.com/article/10.1007%2Fs10811-019-01941-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10811-019-01941-3" target="_blank" >10.1007/s10811-019-01941-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Alkaline flocculation of Microcystis aeruginosa induced by calcium and magnesium precipitates

Popis výsledku v původním jazyce

The 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+, PO4 3−, 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+, PO4 3−, and pH, resulting in FE &gt; 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. © 2019, Springer Nature B.V.

Název v anglickém jazyce

Alkaline flocculation of Microcystis aeruginosa induced by calcium and magnesium precipitates

Popis výsledku anglicky

The 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+, PO4 3−, 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+, PO4 3−, and pH, resulting in FE &gt; 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. © 2019, Springer Nature B.V.

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

20801 - Environmental biotechnology

Projekt

<a href="/cs/project/GA18-05007S" target="_blank" >GA18-05007S: Vliv organických látek produkovaných fytoplanktonem na vlastnosti vloček tvořených během koagulace/flokulace při úpravě vody</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Applied Phycology

ISSN

0921-8971

e-ISSN

—

Svazek periodika

Neuveden

Číslo periodika v rámci svazku

November 2019

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85075596156