The impact of pre-oxidation with potassium permanganate on cyanobacterial organic matter removal by coagulation
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F17%3A00471168" target="_blank" >RIV/67985874:_____/17:00471168 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/17:10359345 RIV/60461373:22320/17:43913537
Result on the web
<a href="http://dx.doi.org/10.1016/j.watres.2017.02.029" target="_blank" >http://dx.doi.org/10.1016/j.watres.2017.02.029</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.watres.2017.02.029" target="_blank" >10.1016/j.watres.2017.02.029</a>
Alternative languages
Result language
angličtina
Original language name
The impact of pre-oxidation with potassium permanganate on cyanobacterial organic matter removal by coagulation
Original language description
The study investigates the effect of permanganate pre-oxidation on the coagulation of peptides/proteins of Microcystis aeruginosa which comprise a major proportion of the organic matter during cyanobacterial bloom decay. Four different permanganate dosages (0.1, 0.2, 0.4 and 0.6 mg KMnO4 mg(-1) DOC) were applied prior to coagulation by ferric sulphate. Moreover, changes in sample characteristics, such as UV254, DOC content and molecular weight distribution, after pre-oxidation were monitored. The results showed that permanganate pre-oxidation led to a reduction in coagulant dose, increased organic matter removals by coagulation (by 5-12% depending on permanganate dose), microcystin removal (with reductions of 91-96%) and a shift of the optimum pH range from 4.3 to 6 without to 5.5-73 with pre-oxidation. Degradation of organic matter into inorganic carbon and adsorption of organic matter onto hydrous MnO2 are suggested as the main processes responsible for coagulation improvement. Moreover, permanganate prevented the formation of Fe-peptide/protein complexes that inhibit coagulation at pH about 6.2 without pre-oxidation. The study showed that carefully optimized dosing of permanganate improves cyanobacterial peptide/protein removal, with the benefit of microcystin elimination.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Water Research
ISSN
0043-1354
e-ISSN
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Volume of the periodical
114
Issue of the periodical within the volume
May
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
42-49
UT code for WoS article
000397695800005
EID of the result in the Scopus database
2-s2.0-85013202262