How algal organic matter affects coagulation of other impurities present in surface waters

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F18%3A00489943" target="_blank" >RIV/67985874:_____/18:00489943 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

How algal organic matter affects coagulation of other impurities present in surface waters

Popis výsledku v původním jazyce

Drinking water treatment (DWT) is facing an adverse impact of algae especially when they extensively decay and release cellular organic matter (COM). Algal organic matter (AOM) has been usually reported to interfere with coagulation that seems to be a cost-effective prerequisite for the efficient performance of all down-stream processes (Henderson et al., 2010). Despite low treatability of AOM, owing to its variable features AOM exhibits both favourable and adverse effects on the removal of other impurities (Bernhardt et al., 1985). Research into the impact of AOM on coagulation of other particles or molecules has preferably dealt with coagulation of algal cells in the presence of extracellular organic matter released via metabolic activity into the culture media (Vandamme et al., 2012, Garzon-Sanabria et al., 2013) or as a drawback of pre-oxidation (Ma and Liu, 2002, Ma et al., 2012). What has not received much attention so far is coagulation of COM released after cell lysis, which may form a majority of dissolved natural organic matter contained in water sources (Henderson et al., 2008). As COM is not only difficult to coagulate, but also hinders coagulation of other substances, the study investigates the impact of COM derived from two common cyanobacterial species Microcystis aeruginosa and Merismopedia tenuissima on removability of other impurities naturally occurring in surface waters: kaolin, humic substances (HS) and cyanobacterial cells of M. tenuissima by means of coagulation/flocculation as the essential and simultaneously most vulnerable step in the overall solid-liquid separation scheme in DWT.

Název v anglickém jazyce

How algal organic matter affects coagulation of other impurities present in surface waters

Popis výsledku anglicky

Drinking water treatment (DWT) is facing an adverse impact of algae especially when they extensively decay and release cellular organic matter (COM). Algal organic matter (AOM) has been usually reported to interfere with coagulation that seems to be a cost-effective prerequisite for the efficient performance of all down-stream processes (Henderson et al., 2010). Despite low treatability of AOM, owing to its variable features AOM exhibits both favourable and adverse effects on the removal of other impurities (Bernhardt et al., 1985). Research into the impact of AOM on coagulation of other particles or molecules has preferably dealt with coagulation of algal cells in the presence of extracellular organic matter released via metabolic activity into the culture media (Vandamme et al., 2012, Garzon-Sanabria et al., 2013) or as a drawback of pre-oxidation (Ma and Liu, 2002, Ma et al., 2012). What has not received much attention so far is coagulation of COM released after cell lysis, which may form a majority of dissolved natural organic matter contained in water sources (Henderson et al., 2008). As COM is not only difficult to coagulate, but also hinders coagulation of other substances, the study investigates the impact of COM derived from two common cyanobacterial species Microcystis aeruginosa and Merismopedia tenuissima on removability of other impurities naturally occurring in surface waters: kaolin, humic substances (HS) and cyanobacterial cells of M. tenuissima by means of coagulation/flocculation as the essential and simultaneously most vulnerable step in the overall solid-liquid separation scheme in DWT.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

<a href="/cs/project/GA18-14445S" target="_blank" >GA18-14445S: Oxidace látek produkovaných fytoplanktonem a její vliv na ekotoxicitu a úpravu vody koagulací</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

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