Coagulation-flocculation of Microcystis aeruginosa by clay-polymer based composites (Comunicacion Congreso)

2 páginas.- 1 figuras.- 1 tabla.- 1 referencia.- Abstract extendido de la comunicación oral presentada en la XXVI Reunión Científica de la Sociedad Española de Arcillas.- Enlace a la revista https://www.semineral.es/websem/PdfServlet?mod=archivos&subMod=publicaciones&archivo=MACLA%2026%20V5.pdf

Cyanobacteria blooming episodes in water bodies are increasing due to global warming and nutrient enrichment arising from anthropogenic activities. Their presence in water poses a risk for the environment and human health due to release of toxins. Coagulation-flocculation has been proved to be a key treatment for removal of cyanobacterial cells along Drinking Water Treatment plants avoiding the release of endotoxins by cell lysis. The combined use of cationic polymer and clay minerals can be a good approach for their use in coagulation-flocculation of cyanobacterial suspensions, relative to more conventional chemicals used. In the current work, clay-polymer complexes were examined for removal of Microcystis aeruginosa in suspensions. These complexes were prepared from polymers derived of quaternized poly-4-vinylpyridine (PVP), which were sorbed and grafted on the surface of the clay mineral montmorillonite. Quaternization was performed by introducing methyl and hydroxyethyl moieties on the pyridinic N.

The authors acknowledge the Ministry of Science and Innovation for financial support (grant CTM2016-77168-R).

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