Počet záznamů: 1
Influence of peptides and proteins produced by cyanobacterium Microcystis aeruginosa on the coagulation of turbid waters
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SYSNO ASEP 0393896 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Influence of peptides and proteins produced by cyanobacterium Microcystis aeruginosa on the coagulation of turbid waters Tvůrce(i) Šafaříková, Jana (UH-J) RID
Barešová, Magdalena (UH-J) RID, ORCID, SAI
Pivokonský, Martin (UH-J) SAI, ORCID, RID
Kopecká, Ivana (UH-J) SAI, RID, ORCIDZdroj.dok. Separation and Purification Technology. - : Elsevier - ISSN 1383-5866
Roč. 18, October (2013), s. 49-57Poč.str. 9 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. GB - Velká Británie Klíč. slova Cellular organic matter (COM) ; Coagulation ; Microcystis aeruginosa ; Peptides/proteins ; Turbidity removal Vědní obor RIV BK - Mechanika tekutin CEP GAP105/11/0247 GA ČR - Grantová agentura ČR Institucionální podpora UH-J - RVO:67985874 CEZ AV0Z20600510 - UH-J (2005-2011) UT WOS 000326994500007 EID SCOPUS 84880352183 DOI 10.1016/j.seppur.2013.06.049 Anotace The study investigated the influence of cellular peptides and proteins derived from cyanobacterium Microcystis aeruginosa on the coagulation of kaolin particles during water treatment. To describe the coagulation mechanisms, coagulation system constituents (peptides/proteins, kaolin and coagulant) were characterized in terms of their surface charges. The removal mechanisms of peptides/proteins and kaolin were evaluated by the comparison of the coagulation tests performed with and without coagulant (ferric or aluminum sulfate). We confirmed the peptide/protein inhibiting effect on coagulation through the formation of dissolved complexes with coagulants at a pH value of about 6 for Fe and a pH value of about 6.8 for Al. On the other hand, we demonstrated that cyanobacterial peptides/proteins also have positive effects as they induce the coagulation of hydrophobic kaolin particles within the pH range 4–6 for Fe and 5–6.5 for Al. Interestingly, when peptides/proteins bear a sufficiently low amount of negative charge (pH < 4.5), they can coagulate with kaolin by means of electrostatic interactions even in the absence of a coagulant. The study showed that peptides/proteins produced by M. aeruginosa can serve as coagulation aids and contribute to the turbidity removal at pH values below neutral (pH < 6 for Fe and pH < 6.5 for Al). Pracoviště Ústav pro hydrodynamiku Kontakt Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Rok sběru 2014
Počet záznamů: 1