How algal organic matter affects coagulation of other impurities present in surface waters
The result's identifiers
Result code in 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>
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
How algal organic matter affects coagulation of other impurities present in surface waters
Original language description
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.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
<a href="/en/project/GA18-14445S" target="_blank" >GA18-14445S: Algal organic matter oxidation and its impact on ecotoxicity and water treatment by coagulation</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů