The effect of proteinous substances from cyanobacterium Microcystis aeruginosa on coagulation of kaolin particles

0378885 - ÚH 2013 DE eng C - Conference Paper (international conference)
Šafaříková, Jana - Pivokonský, Martin
The effect of proteinous substances from cyanobacterium Microcystis aeruginosa on coagulation of kaolin particles.
Proceedings of the International Conference on Particle Separation. Berlin: IWA, 2012 - (Jekel, M.), s. 44-45
[IWA Specialist Conference on Particle Separation. Berlin (DE), 18.06.2012-20.06.2012]
R&D Projects: GA ČR GAP105/11/0247
Institutional research plan: CEZ:AV0Z20600510
Keywords : algal organic matter (AOM) * coagulation/flocculation * proteins * complexes formation
Subject RIV: BK - Fluid Dynamics

In this study, the influence of proteinous substances produced by cyanobacterium Microcystis aeruginosa on coagulation of hydrophobic kaolin particles was investigated. For this purpose, jar tests using ferric sulphate as a coagulant were carried out under different pH conditions. At pH 3.5 - 5.5, the efficient coagulation of both kaolin particles and proteins took place and polymer interactions were found to be a dominant coagulation mechanism. The character of the prevailing coagulation mechanism was strongly dependent on protein isoelectric points, zeta potential of kaolin particles and charge characteristics of hydrolysis products of coagulation agent. Through affinity chromatography analysis it was demonstrated that proteinous substances of MW 10, 8.4, 7.7, 6.5, 2.8 and 1 kDa formed complexes with iron at pH about 6.
Permanent Link: http://hdl.handle.net/11104/0210212