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Effect of cyanobacterial peptides and proteins on coagulation of kaolinite

SYSNO ASEP	0467184
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve SCOPUS
Title	Effect of cyanobacterial peptides and proteins on coagulation of kaolinite
Author(s)	Novotná, Kateřina (UH-J)_{SAI, ORCID, RID} Barešová, Magdalena (UH-J)_{RID, ORCID, SAI} Čermáková, Lenka (UH-J)_{RID, ORCID, SAI} Načeradská, Jana (UH-J)_{SAI, ORCID, RID} Pivokonský, Martin (UH-J)_{SAI, ORCID, RID}
Source Title	European Journal of Environmental Sciences. - : Univerzita Karlova v Praze - ISSN 1805-0174 Roč. 6, č. 2 (2016), s. 83-89
Number of pages	7 s.
Publication form	Print - P
Language	eng - English
Country	CZ - Czech Republic
Keywords	cellular organic matter ; coagulation ; complex formation ; Microcystis aeruginosa ; water treatment
Subject RIV	DA - Hydrology ; Limnology
OECD category	Environmental sciences (social aspects to be 5.7)
Institutional support	UH-J - RVO:67985874
EID SCOPUS	85020545643
DOI	10.14712/23361964.2016.12
Annotation	Coagulation of peptides and proteins produced by the cyanobacterium Microcystis aeruginosa and their influence on the coagulation of hydrophobic kaolinite particles were investigated. For this purpose, the dose of ferric sulphate used as the coagulant was optimized and jar tests with kaolinite, peptides/proteins and both kaolinite and peptides/proteins were carried out under different pH conditions. At pH 4–5.5, the peptides/proteins were efficiently coagulated and peptides/proteins were also found to contribute to the coagulation of kaolinite particles at this pH. Charge neutralization and adsorption were found to be the dominant coagulation mechanisms. The coagulation efficiency and the character of the prevailing coagulation mechanism were strongly dependent on the charge characteristics of the peptides/proteins, kaolinite and hydrolysis products of iron, thus on the pH value. At a pH of about 6, the coagulation process deteriorated due to the formation of soluble Fe-peptide/protein complexes.
Workplace	Institute of Hydrodynamics
Contact	Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
Year of Publishing	2017

Number of the records: 1